Open-ILS/src/c-apps/oils_cstore.c

   1 #include <ctype.h>
   2 #include "opensrf/osrf_application.h"
   3 #include "opensrf/osrf_settings.h"
   4 #include "opensrf/osrf_message.h"
   5 #include "opensrf/utils.h"
   6 #include "opensrf/osrf_json.h"
   7 #include "opensrf/log.h"
   8 #include "openils/oils_utils.h"
   9 #include <dbi/dbi.h>
  10
  11 #include <time.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <unistd.h>
  15
  16 #ifdef RSTORE
  17 #  define MODULENAME "open-ils.reporter-store"
  18 #else
  19 #  ifdef PCRUD
  20 #    define MODULENAME "open-ils.pcrud"
  21 #  else
  22 #    define MODULENAME "open-ils.cstore"
  23 #  endif
  24 #endif
  25
  26 #define SUBSELECT       4
  27 #define DISABLE_I18N    2
  28 #define SELECT_DISTINCT 1
  29 #define AND_OP_JOIN     0
  30 #define OR_OP_JOIN      1
  31
  32 int osrfAppChildInit();
  33 int osrfAppInitialize();
  34 void osrfAppChildExit();
  35
  36 static int verifyObjectClass ( osrfMethodContext*, const jsonObject* );
  37
  38 int beginTransaction ( osrfMethodContext* );
  39 int commitTransaction ( osrfMethodContext* );
  40 int rollbackTransaction ( osrfMethodContext* );
  41
  42 int setSavepoint ( osrfMethodContext* );
  43 int releaseSavepoint ( osrfMethodContext* );
  44 int rollbackSavepoint ( osrfMethodContext* );
  45
  46 int doJSONSearch ( osrfMethodContext* );
  47
  48 int dispatchCRUDMethod ( osrfMethodContext* );
  49 static jsonObject* doCreate ( osrfMethodContext*, int* );
  50 static jsonObject* doRetrieve ( osrfMethodContext*, int* );
  51 static jsonObject* doUpdate ( osrfMethodContext*, int* );
  52 static jsonObject* doDelete ( osrfMethodContext*, int* );
  53 static jsonObject* doFieldmapperSearch ( osrfMethodContext*, osrfHash*,
  54         const jsonObject*, int* );
  55 static jsonObject* oilsMakeFieldmapperFromResult( dbi_result, osrfHash* );
  56 static jsonObject* oilsMakeJSONFromResult( dbi_result );
  57
  58 static char* searchSimplePredicate ( const char* op, const char* class,
  59                                 osrfHash* field, const jsonObject* node );
  60 static char* searchFunctionPredicate ( const char*, osrfHash*, const jsonObject*, const char* );
  61 static char* searchFieldTransform ( const char*, osrfHash*, const jsonObject*);
  62 static char* searchFieldTransformPredicate ( const char*, osrfHash*, const jsonObject*, const char* );
  63 static char* searchBETWEENPredicate ( const char*, osrfHash*, const jsonObject* );
  64 static char* searchINPredicate ( const char*, osrfHash*,
  65                                                                  jsonObject*, const char*, osrfMethodContext* );
  66 static char* searchPredicate ( const char*, osrfHash*, jsonObject*, osrfMethodContext* );
  67 static char* searchJOIN ( const jsonObject*, osrfHash* );
  68 static char* searchWHERE ( const jsonObject*, osrfHash*, int, osrfMethodContext* );
  69 static char* buildSELECT ( jsonObject*, jsonObject*, osrfHash*, osrfMethodContext* );
  70
  71 char* SELECT ( osrfMethodContext*, jsonObject*, jsonObject*, jsonObject*, jsonObject*, jsonObject*, jsonObject*, jsonObject*, int );
  72
  73 void userDataFree( void* );
  74 static void sessionDataFree( char*, void* );
  75 static char* getSourceDefinition( osrfHash* );
  76 static int str_is_true( const char* str );
  77 static int obj_is_true( const jsonObject* obj );
  78 static const char* json_type( int code );
  79 static const char* get_primitive( osrfHash* field );
  80 static const char* get_datatype( osrfHash* field );
  81 static int is_identifier( const char* s);
  82 static int is_good_operator( const char* op );
  83
  84 #ifdef PCRUD
  85 static jsonObject* verifyUserPCRUD( osrfMethodContext* );
  86 static int verifyObjectPCRUD( osrfMethodContext*, const jsonObject* );
  87 #endif
  88
  89 static int child_initialized = 0;   /* boolean */
  90
  91 static dbi_conn writehandle; /* our MASTER db connection */
  92 static dbi_conn dbhandle; /* our CURRENT db connection */
  93 //static osrfHash * readHandles;
  94 static jsonObject* jsonNULL = NULL; //
  95 static int max_flesh_depth = 100;
  96
  97 /* called when this process is about to exit */
  98 void osrfAppChildExit() {
  99     osrfLogDebug(OSRF_LOG_MARK, "Child is exiting, disconnecting from database...");
 100
 101     int same = 0;
 102     if (writehandle == dbhandle) same = 1;
 103     if (writehandle) {
 104         dbi_conn_query(writehandle, "ROLLBACK;");
 105         dbi_conn_close(writehandle);
 106         writehandle = NULL;
 107     }
 108     if (dbhandle && !same)
 109         dbi_conn_close(dbhandle);
 110
 111     // XXX add cleanup of readHandles whenever that gets used
 112
 113     return;
 114 }
 115
 116 int osrfAppInitialize() {
 117
 118     osrfLogInfo(OSRF_LOG_MARK, "Initializing the CStore Server...");
 119     osrfLogInfo(OSRF_LOG_MARK, "Finding XML file...");
 120
 121     if (!oilsIDLInit( osrf_settings_host_value("/IDL") )) return 1; /* return non-zero to indicate error */
 122
 123     growing_buffer* method_name = buffer_init(64);
 124 #ifndef PCRUD
 125     // Generic search thingy
 126     buffer_add(method_name, MODULENAME);
 127         buffer_add(method_name, ".json_query");
 128         osrfAppRegisterMethod( MODULENAME, OSRF_BUFFER_C_STR(method_name),
 129                                                    "doJSONSearch", "", 1, OSRF_METHOD_STREAMING );
 130 #endif
 131
 132     // first we register all the transaction and savepoint methods
 133     buffer_reset(method_name);
 134         OSRF_BUFFER_ADD(method_name, MODULENAME);
 135         OSRF_BUFFER_ADD(method_name, ".transaction.begin");
 136         osrfAppRegisterMethod( MODULENAME, OSRF_BUFFER_C_STR(method_name),
 137                                                    "beginTransaction", "", 0, 0 );
 138
 139     buffer_reset(method_name);
 140         OSRF_BUFFER_ADD(method_name, MODULENAME);
 141         OSRF_BUFFER_ADD(method_name, ".transaction.commit");
 142         osrfAppRegisterMethod( MODULENAME, OSRF_BUFFER_C_STR(method_name),
 143                                                    "commitTransaction", "", 0, 0 );
 144
 145     buffer_reset(method_name);
 146         OSRF_BUFFER_ADD(method_name, MODULENAME);
 147         OSRF_BUFFER_ADD(method_name, ".transaction.rollback");
 148         osrfAppRegisterMethod( MODULENAME, OSRF_BUFFER_C_STR(method_name),
 149                                                    "rollbackTransaction", "", 0, 0 );
 150
 151     buffer_reset(method_name);
 152         OSRF_BUFFER_ADD(method_name, MODULENAME);
 153         OSRF_BUFFER_ADD(method_name, ".savepoint.set");
 154         osrfAppRegisterMethod( MODULENAME, OSRF_BUFFER_C_STR(method_name),
 155                                                    "setSavepoint", "", 1, 0 );
 156
 157     buffer_reset(method_name);
 158         OSRF_BUFFER_ADD(method_name, MODULENAME);
 159         OSRF_BUFFER_ADD(method_name, ".savepoint.release");
 160         osrfAppRegisterMethod( MODULENAME, OSRF_BUFFER_C_STR(method_name),
 161                                                    "releaseSavepoint", "", 1, 0 );
 162
 163     buffer_reset(method_name);
 164         OSRF_BUFFER_ADD(method_name, MODULENAME);
 165         OSRF_BUFFER_ADD(method_name, ".savepoint.rollback");
 166         osrfAppRegisterMethod( MODULENAME, OSRF_BUFFER_C_STR(method_name),
 167                                                    "rollbackSavepoint", "", 1, 0 );
 168
 169     buffer_free(method_name);
 170
 171         static const char* global_method[] = {
 172                 "create",
 173                 "retrieve",
 174                 "update",
 175                 "delete",
 176                 "search",
 177                 "id_list"
 178         };
 179         const int global_method_count
 180                 = sizeof( global_method ) / sizeof ( global_method[0] );
 181
 182     int c_index = 0;
 183     char* classname;
 184     osrfStringArray* classes = osrfHashKeys( oilsIDL() );
 185     osrfLogDebug(OSRF_LOG_MARK, "%d classes loaded", classes->size );
 186     osrfLogDebug(OSRF_LOG_MARK,
 187                 "At least %d methods will be generated", classes->size * global_method_count);
 188
 189     while ( (classname = osrfStringArrayGetString(classes, c_index++)) ) {
 190         osrfLogInfo(OSRF_LOG_MARK, "Generating class methods for %s", classname);
 191
 192         osrfHash* idlClass = osrfHashGet(oilsIDL(), classname);
 193
 194         if (!osrfStringArrayContains( osrfHashGet(idlClass, "controller"), MODULENAME )) {
 195             osrfLogInfo(OSRF_LOG_MARK, "%s is not listed as a controller for %s, moving on", MODULENAME, classname);
 196             continue;
 197         }
 198
 199                 if ( str_is_true( osrfHashGet(idlClass, "virtual") ) ) {
 200                         osrfLogDebug(OSRF_LOG_MARK, "Class %s is virtual, skipping", classname );
 201                         continue;
 202                 }
 203
 204         // Look up some other attributes of the current class
 205         const char* idlClass_fieldmapper = osrfHashGet(idlClass, "fieldmapper");
 206                 const char* readonly = osrfHashGet(idlClass, "readonly");
 207 #ifdef PCRUD
 208         osrfHash* idlClass_permacrud = osrfHashGet(idlClass, "permacrud");
 209 #endif
 210
 211         int i;
 212         for( i = 0; i < global_method_count; ++i ) {
 213             const char* method_type = global_method[ i ];
 214             osrfLogDebug(OSRF_LOG_MARK,
 215                 "Using files to build %s class methods for %s", method_type, classname);
 216
 217             if (!idlClass_fieldmapper) continue;
 218
 219 #ifdef PCRUD
 220             if (!idlClass_permacrud) continue;
 221
 222             const char* tmp_method = method_type;
 223             if ( *tmp_method == 'i' || *tmp_method == 's') {
 224                 tmp_method = "retrieve";
 225             }
 226             if (!osrfHashGet( idlClass_permacrud, tmp_method )) continue;
 227 #endif
 228
 229             if (    str_is_true( readonly ) &&
 230                     ( *method_type == 'c' || *method_type == 'u' || *method_type == 'd')
 231                ) continue;
 232
 233             osrfHash* method_meta = osrfNewHash();
 234             osrfHashSet(method_meta, idlClass, "class");
 235
 236             method_name =  buffer_init(64);
 237 #ifdef PCRUD
 238             buffer_fadd(method_name, "%s.%s.%s", MODULENAME, method_type, classname);
 239 #else
 240             char* st_tmp = NULL;
 241             char* part = NULL;
 242             char* _fm = strdup( idlClass_fieldmapper );
 243             part = strtok_r(_fm, ":", &st_tmp);
 244
 245             buffer_fadd(method_name, "%s.direct.%s", MODULENAME, part);
 246
 247             while ((part = strtok_r(NULL, ":", &st_tmp))) {
 248                                 OSRF_BUFFER_ADD_CHAR(method_name, '.');
 249                                 OSRF_BUFFER_ADD(method_name, part);
 250             }
 251                         OSRF_BUFFER_ADD_CHAR(method_name, '.');
 252                         OSRF_BUFFER_ADD(method_name, method_type);
 253             free(_fm);
 254 #endif
 255
 256             char* method = buffer_release(method_name);
 257
 258             osrfHashSet( method_meta, method, "methodname" );
 259             osrfHashSet( method_meta, strdup(method_type), "methodtype" );
 260
 261             int flags = 0;
 262             if (*method_type == 'i' || *method_type == 's') {
 263                 flags = flags | OSRF_METHOD_STREAMING;
 264             }
 265
 266             osrfAppRegisterExtendedMethod(
 267                     MODULENAME,
 268                     method,
 269                     "dispatchCRUDMethod",
 270                     "",
 271                     1,
 272                     flags,
 273                     (void*)method_meta
 274                     );
 275
 276             free(method);
 277         }
 278     }
 279
 280     return 0;
 281 }
 282
 283 static char* getSourceDefinition( osrfHash* class ) {
 284
 285         char* tabledef = osrfHashGet(class, "tablename");
 286
 287         if (tabledef) {
 288                 tabledef = strdup(tabledef);
 289         } else {
 290                 tabledef = osrfHashGet(class, "source_definition");
 291                 if( tabledef ) {
 292                         growing_buffer* tablebuf = buffer_init(128);
 293                         buffer_fadd( tablebuf, "(%s)", tabledef );
 294                         tabledef = buffer_release(tablebuf);
 295                 } else {
 296                         const char* classname = osrfHashGet( class, "classname" );
 297                         if( !classname )
 298                                 classname = "???";
 299                         osrfLogError(
 300                                 OSRF_LOG_MARK,
 301                                 "%s ERROR No tablename or source_definition for class \"%s\"",
 302                                 MODULENAME,
 303                                 classname
 304                         );
 305                 }
 306         }
 307
 308         return tabledef;
 309 }
 310
 311 /**
 312  * Connects to the database
 313  */
 314 int osrfAppChildInit() {
 315
 316     osrfLogDebug(OSRF_LOG_MARK, "Attempting to initialize libdbi...");
 317     dbi_initialize(NULL);
 318     osrfLogDebug(OSRF_LOG_MARK, "... libdbi initialized.");
 319
 320     char* driver        = osrf_settings_host_value("/apps/%s/app_settings/driver", MODULENAME);
 321     char* user  = osrf_settings_host_value("/apps/%s/app_settings/database/user", MODULENAME);
 322     char* host  = osrf_settings_host_value("/apps/%s/app_settings/database/host", MODULENAME);
 323     char* port  = osrf_settings_host_value("/apps/%s/app_settings/database/port", MODULENAME);
 324     char* db    = osrf_settings_host_value("/apps/%s/app_settings/database/db", MODULENAME);
 325     char* pw    = osrf_settings_host_value("/apps/%s/app_settings/database/pw", MODULENAME);
 326     char* md    = osrf_settings_host_value("/apps/%s/app_settings/max_query_recursion", MODULENAME);
 327
 328     osrfLogDebug(OSRF_LOG_MARK, "Attempting to load the database driver [%s]...", driver);
 329     writehandle = dbi_conn_new(driver);
 330
 331     if(!writehandle) {
 332         osrfLogError(OSRF_LOG_MARK, "Error loading database driver [%s]", driver);
 333         return -1;
 334     }
 335     osrfLogDebug(OSRF_LOG_MARK, "Database driver [%s] seems OK", driver);
 336
 337     osrfLogInfo(OSRF_LOG_MARK, "%s connecting to database.  host=%s, "
 338             "port=%s, user=%s, pw=%s, db=%s", MODULENAME, host, port, user, pw, db );
 339
 340     if(host) dbi_conn_set_option(writehandle, "host", host );
 341     if(port) dbi_conn_set_option_numeric( writehandle, "port", atoi(port) );
 342     if(user) dbi_conn_set_option(writehandle, "username", user);
 343     if(pw) dbi_conn_set_option(writehandle, "password", pw );
 344     if(db) dbi_conn_set_option(writehandle, "dbname", db );
 345
 346     if(md) max_flesh_depth = atoi(md);
 347     if(max_flesh_depth < 0) max_flesh_depth = 1;
 348     if(max_flesh_depth > 1000) max_flesh_depth = 1000;
 349
 350     free(user);
 351     free(host);
 352     free(port);
 353     free(db);
 354     free(pw);
 355
 356     const char* err;
 357     if (dbi_conn_connect(writehandle) < 0) {
 358         sleep(1);
 359         if (dbi_conn_connect(writehandle) < 0) {
 360             dbi_conn_error(writehandle, &err);
 361             osrfLogError( OSRF_LOG_MARK, "Error connecting to database: %s", err);
 362             return -1;
 363         }
 364     }
 365
 366     osrfLogInfo(OSRF_LOG_MARK, "%s successfully connected to the database", MODULENAME);
 367
 368     unsigned short type;
 369     int i = 0;
 370     char* classname;
 371     osrfStringArray* classes = osrfHashKeys( oilsIDL() );
 372
 373     while ( (classname = osrfStringArrayGetString(classes, i++)) ) {
 374         osrfHash* class = osrfHashGet( oilsIDL(), classname );
 375         osrfHash* fields = osrfHashGet( class, "fields" );
 376
 377                 if( str_is_true( osrfHashGet(class, "virtual") ) ) {
 378                         osrfLogDebug(OSRF_LOG_MARK, "Class %s is virtual, skipping", classname );
 379                         continue;
 380                 }
 381
 382         char* tabledef = getSourceDefinition(class);
 383                 if( !tabledef )
 384                         tabledef = strdup( "(null)" );
 385
 386         growing_buffer* sql_buf = buffer_init(32);
 387         buffer_fadd( sql_buf, "SELECT * FROM %s AS x WHERE 1=0;", tabledef );
 388
 389         free(tabledef);
 390
 391         char* sql = buffer_release(sql_buf);
 392         osrfLogDebug(OSRF_LOG_MARK, "%s Investigatory SQL = %s", MODULENAME, sql);
 393
 394         dbi_result result = dbi_conn_query(writehandle, sql);
 395         free(sql);
 396
 397         if (result) {
 398
 399             int columnIndex = 1;
 400             const char* columnName;
 401             osrfHash* _f;
 402             while( (columnName = dbi_result_get_field_name(result, columnIndex++)) ) {
 403
 404                 osrfLogInternal(OSRF_LOG_MARK, "Looking for column named [%s]...", (char*)columnName);
 405
 406                 /* fetch the fieldmapper index */
 407                 if( (_f = osrfHashGet(fields, (char*)columnName)) ) {
 408
 409                     osrfLogDebug(OSRF_LOG_MARK, "Found [%s] in IDL hash...", (char*)columnName);
 410
 411                     /* determine the field type and storage attributes */
 412                     type = dbi_result_get_field_type(result, columnName);
 413
 414                     switch( type ) {
 415
 416                                                 case DBI_TYPE_INTEGER : {
 417
 418                                                         if ( !osrfHashGet(_f, "primitive") )
 419                                                                 osrfHashSet(_f,"number", "primitive");
 420
 421                                                         int attr = dbi_result_get_field_attribs(result, columnName);
 422                                                         if( attr & DBI_INTEGER_SIZE8 )
 423                                                                 osrfHashSet(_f,"INT8", "datatype");
 424                                                         else
 425                                                                 osrfHashSet(_f,"INT", "datatype");
 426                                                         break;
 427                                                 }
 428                         case DBI_TYPE_DECIMAL :
 429                             if ( !osrfHashGet(_f, "primitive") )
 430                                 osrfHashSet(_f,"number", "primitive");
 431
 432                             osrfHashSet(_f,"NUMERIC", "datatype");
 433                             break;
 434
 435                         case DBI_TYPE_STRING :
 436                             if ( !osrfHashGet(_f, "primitive") )
 437                                 osrfHashSet(_f,"string", "primitive");
 438                             osrfHashSet(_f,"TEXT", "datatype");
 439                             break;
 440
 441                         case DBI_TYPE_DATETIME :
 442                             if ( !osrfHashGet(_f, "primitive") )
 443                                 osrfHashSet(_f,"string", "primitive");
 444
 445                             osrfHashSet(_f,"TIMESTAMP", "datatype");
 446                             break;
 447
 448                         case DBI_TYPE_BINARY :
 449                             if ( !osrfHashGet(_f, "primitive") )
 450                                 osrfHashSet(_f,"string", "primitive");
 451
 452                             osrfHashSet(_f,"BYTEA", "datatype");
 453                     }
 454
 455                     osrfLogDebug(
 456                             OSRF_LOG_MARK,
 457                             "Setting [%s] to primitive [%s] and datatype [%s]...",
 458                             (char*)columnName,
 459                             osrfHashGet(_f, "primitive"),
 460                             osrfHashGet(_f, "datatype")
 461                             );
 462                 }
 463             }
 464             dbi_result_free(result);
 465         } else {
 466             osrfLogDebug(OSRF_LOG_MARK, "No data found for class [%s]...", (char*)classname);
 467         }
 468     }
 469
 470     osrfStringArrayFree(classes);
 471
 472         child_initialized = 1;
 473     return 0;
 474 }
 475
 476 /*
 477   This function is a sleazy hack intended *only* for testing and
 478   debugging.  Any real server process should initialize the
 479   database connection by calling osrfAppChildInit().
 480 */
 481 void set_cstore_dbi_conn( dbi_conn conn ) {
 482         dbhandle = writehandle = conn;
 483 }
 484
 485 void userDataFree( void* blob ) {
 486     osrfHashFree( (osrfHash*)blob );
 487     return;
 488 }
 489
 490 static void sessionDataFree( char* key, void* item ) {
 491     if (!(strcmp(key,"xact_id"))) {
 492         if (writehandle)
 493             dbi_conn_query(writehandle, "ROLLBACK;");
 494         free(item);
 495     }
 496
 497     return;
 498 }
 499
 500 int beginTransaction ( osrfMethodContext* ctx ) {
 501         if(osrfMethodVerifyContext( ctx )) {
 502                 osrfLogError( OSRF_LOG_MARK,  "Invalid method context" );
 503                 return -1;
 504         }
 505
 506 #ifdef PCRUD
 507     jsonObject* user = verifyUserPCRUD( ctx );
 508     if (!user) return -1;
 509     jsonObjectFree(user);
 510 #endif
 511
 512     dbi_result result = dbi_conn_query(writehandle, "START TRANSACTION;");
 513     if (!result) {
 514         osrfLogError(OSRF_LOG_MARK, "%s: Error starting transaction", MODULENAME );
 515         osrfAppSessionStatus( ctx->session, OSRF_STATUS_INTERNALSERVERERROR, "osrfMethodException", ctx->request, "Error starting transaction" );
 516         return -1;
 517     } else {
 518         jsonObject* ret = jsonNewObject(ctx->session->session_id);
 519         osrfAppRespondComplete( ctx, ret );
 520         jsonObjectFree(ret);
 521
 522         if (!ctx->session->userData) {
 523             ctx->session->userData = osrfNewHash();
 524             osrfHashSetCallback((osrfHash*)ctx->session->userData, &sessionDataFree);
 525         }
 526
 527         osrfHashSet( (osrfHash*)ctx->session->userData, strdup( ctx->session->session_id ), "xact_id" );
 528         ctx->session->userDataFree = &userDataFree;
 529
 530     }
 531     return 0;
 532 }
 533
 534 int setSavepoint ( osrfMethodContext* ctx ) {
 535         if(osrfMethodVerifyContext( ctx )) {
 536                 osrfLogError( OSRF_LOG_MARK,  "Invalid method context" );
 537                 return -1;
 538         }
 539
 540     int spNamePos = 0;
 541 #ifdef PCRUD
 542     spNamePos = 1;
 543     jsonObject* user = verifyUserPCRUD( ctx );
 544     if (!user) return -1;
 545     jsonObjectFree(user);
 546 #endif
 547
 548     if (!osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )) {
 549         osrfAppSessionStatus(
 550                 ctx->session,
 551                 OSRF_STATUS_INTERNALSERVERERROR,
 552                 "osrfMethodException",
 553                 ctx->request,
 554                 "No active transaction -- required for savepoints"
 555                 );
 556         return -1;
 557     }
 558
 559         const char* spName = jsonObjectGetString(jsonObjectGetIndex(ctx->params, spNamePos));
 560
 561         dbi_result result = dbi_conn_queryf(writehandle, "SAVEPOINT \"%s\";", spName);
 562         if (!result) {
 563                 osrfLogError(
 564                         OSRF_LOG_MARK,
 565                         "%s: Error creating savepoint %s in transaction %s",
 566                         MODULENAME,
 567                         spName,
 568                         osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )
 569                 );
 570                 osrfAppSessionStatus( ctx->session, OSRF_STATUS_INTERNALSERVERERROR,
 571                                 "osrfMethodException", ctx->request, "Error creating savepoint" );
 572                 return -1;
 573         } else {
 574                 jsonObject* ret = jsonNewObject(spName);
 575                 osrfAppRespondComplete( ctx, ret );
 576                 jsonObjectFree(ret);
 577         }
 578         return 0;
 579 }
 580
 581 int releaseSavepoint ( osrfMethodContext* ctx ) {
 582         if(osrfMethodVerifyContext( ctx )) {
 583                 osrfLogError( OSRF_LOG_MARK,  "Invalid method context" );
 584                 return -1;
 585         }
 586
 587         int spNamePos = 0;
 588 #ifdef PCRUD
 589     spNamePos = 1;
 590     jsonObject* user = verifyUserPCRUD( ctx );
 591     if (!user) return -1;
 592     jsonObjectFree(user);
 593 #endif
 594
 595     if (!osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )) {
 596         osrfAppSessionStatus(
 597                 ctx->session,
 598                 OSRF_STATUS_INTERNALSERVERERROR,
 599                 "osrfMethodException",
 600                 ctx->request,
 601                 "No active transaction -- required for savepoints"
 602                 );
 603         return -1;
 604     }
 605
 606         const char* spName = jsonObjectGetString( jsonObjectGetIndex(ctx->params, spNamePos) );
 607
 608     dbi_result result = dbi_conn_queryf(writehandle, "RELEASE SAVEPOINT \"%s\";", spName);
 609     if (!result) {
 610         osrfLogError(
 611                 OSRF_LOG_MARK,
 612                 "%s: Error releasing savepoint %s in transaction %s",
 613                 MODULENAME,
 614                 spName,
 615                 osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )
 616                 );
 617                 osrfAppSessionStatus( ctx->session, OSRF_STATUS_INTERNALSERVERERROR,
 618                                 "osrfMethodException", ctx->request, "Error releasing savepoint" );
 619         return -1;
 620     } else {
 621         jsonObject* ret = jsonNewObject(spName);
 622         osrfAppRespondComplete( ctx, ret );
 623         jsonObjectFree(ret);
 624     }
 625     return 0;
 626 }
 627
 628 int rollbackSavepoint ( osrfMethodContext* ctx ) {
 629         if(osrfMethodVerifyContext( ctx )) {
 630                 osrfLogError( OSRF_LOG_MARK,  "Invalid method context" );
 631                 return -1;
 632         }
 633
 634         int spNamePos = 0;
 635 #ifdef PCRUD
 636     spNamePos = 1;
 637     jsonObject* user = verifyUserPCRUD( ctx );
 638     if (!user) return -1;
 639     jsonObjectFree(user);
 640 #endif
 641
 642     if (!osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )) {
 643         osrfAppSessionStatus(
 644                 ctx->session,
 645                 OSRF_STATUS_INTERNALSERVERERROR,
 646                 "osrfMethodException",
 647                 ctx->request,
 648                 "No active transaction -- required for savepoints"
 649                 );
 650         return -1;
 651     }
 652
 653         const char* spName = jsonObjectGetString( jsonObjectGetIndex(ctx->params, spNamePos) );
 654
 655     dbi_result result = dbi_conn_queryf(writehandle, "ROLLBACK TO SAVEPOINT \"%s\";", spName);
 656     if (!result) {
 657         osrfLogError(
 658                 OSRF_LOG_MARK,
 659                 "%s: Error rolling back savepoint %s in transaction %s",
 660                 MODULENAME,
 661                 spName,
 662                 osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )
 663                 );
 664                 osrfAppSessionStatus( ctx->session, OSRF_STATUS_INTERNALSERVERERROR,
 665                                 "osrfMethodException", ctx->request, "Error rolling back savepoint" );
 666         return -1;
 667     } else {
 668         jsonObject* ret = jsonNewObject(spName);
 669         osrfAppRespondComplete( ctx, ret );
 670         jsonObjectFree(ret);
 671     }
 672     return 0;
 673 }
 674
 675 int commitTransaction ( osrfMethodContext* ctx ) {
 676         if(osrfMethodVerifyContext( ctx )) {
 677                 osrfLogError( OSRF_LOG_MARK,  "Invalid method context" );
 678                 return -1;
 679         }
 680
 681 #ifdef PCRUD
 682     jsonObject* user = verifyUserPCRUD( ctx );
 683     if (!user) return -1;
 684     jsonObjectFree(user);
 685 #endif
 686
 687     if (!osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )) {
 688         osrfAppSessionStatus( ctx->session, OSRF_STATUS_INTERNALSERVERERROR, "osrfMethodException", ctx->request, "No active transaction to commit" );
 689         return -1;
 690     }
 691
 692     dbi_result result = dbi_conn_query(writehandle, "COMMIT;");
 693     if (!result) {
 694         osrfLogError(OSRF_LOG_MARK, "%s: Error committing transaction", MODULENAME );
 695         osrfAppSessionStatus( ctx->session, OSRF_STATUS_INTERNALSERVERERROR, "osrfMethodException", ctx->request, "Error committing transaction" );
 696         return -1;
 697     } else {
 698         osrfHashRemove(ctx->session->userData, "xact_id");
 699         jsonObject* ret = jsonNewObject(ctx->session->session_id);
 700         osrfAppRespondComplete( ctx, ret );
 701         jsonObjectFree(ret);
 702     }
 703     return 0;
 704 }
 705
 706 int rollbackTransaction ( osrfMethodContext* ctx ) {
 707         if(osrfMethodVerifyContext( ctx )) {
 708                 osrfLogError( OSRF_LOG_MARK,  "Invalid method context" );
 709                 return -1;
 710         }
 711
 712 #ifdef PCRUD
 713     jsonObject* user = verifyUserPCRUD( ctx );
 714     if (!user) return -1;
 715     jsonObjectFree(user);
 716 #endif
 717
 718     if (!osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )) {
 719         osrfAppSessionStatus( ctx->session, OSRF_STATUS_INTERNALSERVERERROR, "osrfMethodException", ctx->request, "No active transaction to roll back" );
 720         return -1;
 721     }
 722
 723     dbi_result result = dbi_conn_query(writehandle, "ROLLBACK;");
 724     if (!result) {
 725         osrfLogError(OSRF_LOG_MARK, "%s: Error rolling back transaction", MODULENAME );
 726         osrfAppSessionStatus( ctx->session, OSRF_STATUS_INTERNALSERVERERROR, "osrfMethodException", ctx->request, "Error rolling back transaction" );
 727         return -1;
 728     } else {
 729         osrfHashRemove(ctx->session->userData, "xact_id");
 730         jsonObject* ret = jsonNewObject(ctx->session->session_id);
 731         osrfAppRespondComplete( ctx, ret );
 732         jsonObjectFree(ret);
 733     }
 734     return 0;
 735 }
 736
 737 int dispatchCRUDMethod ( osrfMethodContext* ctx ) {
 738         if(osrfMethodVerifyContext( ctx )) {
 739                 osrfLogError( OSRF_LOG_MARK,  "Invalid method context" );
 740                 return -1;
 741         }
 742
 743         osrfHash* meta = (osrfHash*) ctx->method->userData;
 744     osrfHash* class_obj = osrfHashGet( meta, "class" );
 745
 746     int err = 0;
 747
 748     const char* methodtype = osrfHashGet(meta, "methodtype");
 749     jsonObject * obj = NULL;
 750
 751     if (!strcmp(methodtype, "create")) {
 752         obj = doCreate(ctx, &err);
 753         osrfAppRespondComplete( ctx, obj );
 754     }
 755     else if (!strcmp(methodtype, "retrieve")) {
 756         obj = doRetrieve(ctx, &err);
 757         osrfAppRespondComplete( ctx, obj );
 758     }
 759     else if (!strcmp(methodtype, "update")) {
 760         obj = doUpdate(ctx, &err);
 761         osrfAppRespondComplete( ctx, obj );
 762     }
 763     else if (!strcmp(methodtype, "delete")) {
 764         obj = doDelete(ctx, &err);
 765         osrfAppRespondComplete( ctx, obj );
 766     }
 767     else if (!strcmp(methodtype, "search")) {
 768
 769         jsonObject* _p = jsonObjectClone( ctx->params );
 770 #ifdef PCRUD
 771         jsonObjectFree(_p);
 772         _p = jsonParseString("[]");
 773         jsonObjectPush(_p, jsonObjectClone(jsonObjectGetIndex(ctx->params, 1)));
 774         jsonObjectPush(_p, jsonObjectClone(jsonObjectGetIndex(ctx->params, 2)));
 775 #endif
 776
 777         obj = doFieldmapperSearch(ctx, class_obj, _p, &err);
 778
 779         jsonObjectFree(_p);
 780         if(err) return err;
 781
 782         jsonObject* cur;
 783         jsonIterator* itr = jsonNewIterator( obj );
 784         while ((cur = jsonIteratorNext( itr ))) {
 785 #ifdef PCRUD
 786             if(!verifyObjectPCRUD(ctx, cur)) continue;
 787 #endif
 788             osrfAppRespond( ctx, cur );
 789         }
 790         jsonIteratorFree(itr);
 791         osrfAppRespondComplete( ctx, NULL );
 792
 793     } else if (!strcmp(methodtype, "id_list")) {
 794
 795         jsonObject* _p = jsonObjectClone( ctx->params );
 796 #ifdef PCRUD
 797         jsonObjectFree(_p);
 798         _p = jsonParseString("[]");
 799         jsonObjectPush(_p, jsonObjectClone(jsonObjectGetIndex(ctx->params, 1)));
 800         jsonObjectPush(_p, jsonObjectClone(jsonObjectGetIndex(ctx->params, 2)));
 801 #endif
 802
 803         if (jsonObjectGetIndex( _p, 1 )) {
 804             jsonObjectRemoveKey( jsonObjectGetIndex( _p, 1 ), "select" );
 805             jsonObjectRemoveKey( jsonObjectGetIndex( _p, 1 ), "no_i18n" );
 806             jsonObjectRemoveKey( jsonObjectGetIndex( _p, 1 ), "flesh" );
 807             jsonObjectRemoveKey( jsonObjectGetIndex( _p, 1 ), "flesh_columns" );
 808         } else {
 809             jsonObjectSetIndex( _p, 1, jsonNewObjectType(JSON_HASH) );
 810         }
 811
 812                 jsonObjectSetKey( jsonObjectGetIndex( _p, 1 ), "no_i18n", jsonNewBoolObject( 1 ) );
 813
 814         jsonObjectSetKey(
 815             jsonObjectGetIndex( _p, 1 ),
 816             "select",
 817             jsonParseStringFmt(
 818                 "{ \"%s\":[\"%s\"] }",
 819                 osrfHashGet( class_obj, "classname" ),
 820                 osrfHashGet( class_obj, "primarykey" )
 821             )
 822         );
 823
 824         obj = doFieldmapperSearch(ctx, class_obj, _p, &err);
 825
 826         jsonObjectFree(_p);
 827         if(err) return err;
 828
 829         jsonObject* cur;
 830         jsonIterator* itr = jsonNewIterator( obj );
 831         while ((cur = jsonIteratorNext( itr ))) {
 832 #ifdef PCRUD
 833             if(!verifyObjectPCRUD(ctx, cur)) continue;
 834 #endif
 835             osrfAppRespond(
 836                     ctx,
 837                     oilsFMGetObject( cur, osrfHashGet( class_obj, "primarykey" ) )
 838                     );
 839         }
 840         jsonIteratorFree(itr);
 841         osrfAppRespondComplete( ctx, NULL );
 842
 843     } else {
 844         osrfAppRespondComplete( ctx, obj );
 845     }
 846
 847     jsonObjectFree(obj);
 848
 849     return err;
 850 }
 851
 852 static int verifyObjectClass ( osrfMethodContext* ctx, const jsonObject* param ) {
 853
 854     int ret = 1;
 855     osrfHash* meta = (osrfHash*) ctx->method->userData;
 856     osrfHash* class = osrfHashGet( meta, "class" );
 857
 858     if (!param->classname || (strcmp( osrfHashGet(class, "classname"), param->classname ))) {
 859
 860         growing_buffer* msg = buffer_init(128);
 861         buffer_fadd(
 862                 msg,
 863                 "%s: %s method for type %s was passed a %s",
 864                 MODULENAME,
 865                 osrfHashGet(meta, "methodtype"),
 866                 osrfHashGet(class, "classname"),
 867                 param->classname
 868                 );
 869
 870         char* m = buffer_release(msg);
 871         osrfAppSessionStatus( ctx->session, OSRF_STATUS_BADREQUEST, "osrfMethodException", ctx->request, m );
 872
 873         free(m);
 874
 875         return 0;
 876     }
 877
 878 #ifdef PCRUD
 879     ret = verifyObjectPCRUD( ctx, param );
 880 #endif
 881
 882     return ret;
 883 }
 884
 885 #ifdef PCRUD
 886
 887 static jsonObject* verifyUserPCRUD( osrfMethodContext* ctx ) {
 888         const char* auth = jsonObjectGetString( jsonObjectGetIndex( ctx->params, 0 ) );
 889     jsonObject* auth_object = jsonNewObject(auth);
 890     jsonObject* user = oilsUtilsQuickReq("open-ils.auth","open-ils.auth.session.retrieve", auth_object);
 891     jsonObjectFree(auth_object);
 892
 893     if (!user->classname || strcmp(user->classname, "au")) {
 894
 895         growing_buffer* msg = buffer_init(128);
 896         buffer_fadd(
 897             msg,
 898             "%s: permacrud received a bad auth token: %s",
 899             MODULENAME,
 900             auth
 901         );
 902
 903         char* m = buffer_release(msg);
 904         osrfAppSessionStatus( ctx->session, OSRF_STATUS_UNAUTHORIZED, "osrfMethodException", ctx->request, m );
 905
 906         free(m);
 907         jsonObjectFree(user);
 908         user = jsonNULL;
 909     }
 910
 911     return user;
 912
 913 }
 914
 915 static int verifyObjectPCRUD (  osrfMethodContext* ctx, const jsonObject* obj ) {
 916
 917     dbhandle = writehandle;
 918
 919     osrfHash* meta = (osrfHash*) ctx->method->userData;
 920     osrfHash* class = osrfHashGet( meta, "class" );
 921     char* method_type = strdup( osrfHashGet(meta, "methodtype") );
 922     int fetch = 0;
 923
 924     if ( ( *method_type == 's' || *method_type == 'i' ) ) {
 925         free(method_type);
 926         method_type = strdup("retrieve"); // search and id_list are equivelant to retrieve for this
 927     } else if ( *method_type == 'u' || *method_type == 'd' ) {
 928         fetch = 1; // MUST go to the db for the object for update and delete
 929     }
 930
 931     osrfHash* pcrud = osrfHashGet( osrfHashGet(class, "permacrud"), method_type );
 932     free(method_type);
 933
 934     if (!pcrud) {
 935         // No permacrud for this method type on this class
 936
 937         growing_buffer* msg = buffer_init(128);
 938         buffer_fadd(
 939             msg,
 940             "%s: %s on class %s has no permacrud IDL entry",
 941             MODULENAME,
 942             osrfHashGet(meta, "methodtype"),
 943             osrfHashGet(class, "classname")
 944         );
 945
 946         char* m = buffer_release(msg);
 947         osrfAppSessionStatus( ctx->session, OSRF_STATUS_FORBIDDEN, "osrfMethodException", ctx->request, m );
 948
 949         free(m);
 950
 951         return 0;
 952     }
 953
 954     jsonObject* user = verifyUserPCRUD( ctx );
 955     if (!user) return 0;
 956
 957     int userid = atoi( oilsFMGetString( user, "id" ) );
 958     jsonObjectFree(user);
 959
 960     osrfStringArray* permission = osrfHashGet(pcrud, "permission");
 961     osrfStringArray* local_context = osrfHashGet(pcrud, "local_context");
 962     osrfHash* foreign_context = osrfHashGet(pcrud, "foreign_context");
 963
 964     osrfStringArray* context_org_array = osrfNewStringArray(1);
 965
 966     int err = 0;
 967     char* pkey_value = NULL;
 968         if ( str_is_true( osrfHashGet(pcrud, "global_required") ) ) {
 969             osrfLogDebug( OSRF_LOG_MARK, "global-level permissions required, fetching top of the org tree" );
 970
 971         // check for perm at top of org tree
 972         jsonObject* _tmp_params = jsonParseString("[{\"parent_ou\":null}]");
 973                 jsonObject* _list = doFieldmapperSearch(ctx, osrfHashGet( oilsIDL(), "aou" ), _tmp_params, &err);
 974
 975         jsonObject* _tree_top = jsonObjectGetIndex(_list, 0);
 976
 977         if (!_tree_top) {
 978             jsonObjectFree(_tmp_params);
 979             jsonObjectFree(_list);
 980
 981             growing_buffer* msg = buffer_init(128);
 982                         OSRF_BUFFER_ADD( msg, MODULENAME );
 983                         OSRF_BUFFER_ADD( msg,
 984                                 ": Internal error, could not find the top of the org tree (parent_ou = NULL)" );
 985
 986             char* m = buffer_release(msg);
 987             osrfAppSessionStatus( ctx->session, OSRF_STATUS_INTERNALSERVERERROR, "osrfMethodException", ctx->request, m );
 988             free(m);
 989
 990             return 0;
 991         }
 992
 993         osrfStringArrayAdd( context_org_array, oilsFMGetString( _tree_top, "id" ) );
 994             osrfLogDebug( OSRF_LOG_MARK, "top of the org tree is %s", osrfStringArrayGetString(context_org_array, 0) );
 995
 996         jsonObjectFree(_tmp_params);
 997         jsonObjectFree(_list);
 998
 999     } else {
1000             osrfLogDebug( OSRF_LOG_MARK, "global-level permissions not required, fetching context org ids" );
1001             char* pkey = osrfHashGet(class, "primarykey");
1002         jsonObject *param = NULL;
1003
1004         if (obj->classname) {
1005             pkey_value = oilsFMGetString( obj, pkey );
1006             if (!fetch) param = jsonObjectClone(obj);
1007                 osrfLogDebug( OSRF_LOG_MARK, "Object supplied, using primary key value of %s", pkey_value );
1008         } else {
1009             pkey_value = jsonObjectToSimpleString( obj );
1010             fetch = 1;
1011                 osrfLogDebug( OSRF_LOG_MARK, "Object not supplied, using primary key value of %s and retrieving from the database", pkey_value );
1012         }
1013
1014         if (fetch) {
1015             jsonObject* _tmp_params = jsonParseStringFmt("[{\"%s\":\"%s\"}]", pkey, pkey_value);
1016                 jsonObject* _list = doFieldmapperSearch(
1017                 ctx,
1018                 class,
1019                 _tmp_params,
1020                 &err
1021             );
1022
1023             param = jsonObjectClone(jsonObjectGetIndex(_list, 0));
1024
1025             jsonObjectFree(_tmp_params);
1026             jsonObjectFree(_list);
1027         }
1028
1029         if (!param) {
1030             osrfLogDebug( OSRF_LOG_MARK, "Object not found in the database with primary key %s of %s", pkey, pkey_value );
1031
1032             growing_buffer* msg = buffer_init(128);
1033             buffer_fadd(
1034                 msg,
1035                 "%s: no object found with primary key %s of %s",
1036                 MODULENAME,
1037                 pkey,
1038                 pkey_value
1039             );
1040
1041             char* m = buffer_release(msg);
1042             osrfAppSessionStatus(
1043                 ctx->session,
1044                 OSRF_STATUS_INTERNALSERVERERROR,
1045                 "osrfMethodException",
1046                 ctx->request,
1047                 m
1048             );
1049
1050             free(m);
1051             if (pkey_value) free(pkey_value);
1052
1053             return 0;
1054         }
1055
1056         if (local_context->size > 0) {
1057                 osrfLogDebug( OSRF_LOG_MARK, "%d class-local context field(s) specified", local_context->size);
1058             int i = 0;
1059             char* lcontext = NULL;
1060             while ( (lcontext = osrfStringArrayGetString(local_context, i++)) ) {
1061                 osrfStringArrayAdd( context_org_array, oilsFMGetString( param, lcontext ) );
1062                     osrfLogDebug(
1063                     OSRF_LOG_MARK,
1064                     "adding class-local field %s (value: %s) to the context org list",
1065                     lcontext,
1066                     osrfStringArrayGetString(context_org_array, context_org_array->size - 1)
1067                 );
1068             }
1069         }
1070
1071         osrfStringArray* class_list;
1072
1073         if (foreign_context) {
1074             class_list = osrfHashKeys( foreign_context );
1075                 osrfLogDebug( OSRF_LOG_MARK, "%d foreign context classes(s) specified", class_list->size);
1076
1077             if (class_list->size > 0) {
1078
1079                 int i = 0;
1080                 char* class_name = NULL;
1081                 while ( (class_name = osrfStringArrayGetString(class_list, i++)) ) {
1082                     osrfHash* fcontext = osrfHashGet(foreign_context, class_name);
1083
1084                         osrfLogDebug(
1085                         OSRF_LOG_MARK,
1086                         "%d foreign context fields(s) specified for class %s",
1087                         ((osrfStringArray*)osrfHashGet(fcontext,"context"))->size,
1088                         class_name
1089                     );
1090
1091                     char* foreign_pkey = osrfHashGet(fcontext, "field");
1092                     char* foreign_pkey_value = oilsFMGetString(param, osrfHashGet(fcontext, "fkey"));
1093
1094                     jsonObject* _tmp_params = jsonParseStringFmt(
1095                         "[{\"%s\":\"%s\"}]",
1096                         foreign_pkey,
1097                         foreign_pkey_value
1098                     );
1099
1100                         jsonObject* _list = doFieldmapperSearch(
1101                         ctx,
1102                         osrfHashGet( oilsIDL(), class_name ),
1103                         _tmp_params,
1104                         &err
1105                     );
1106
1107                     jsonObject* _fparam = jsonObjectClone(jsonObjectGetIndex(_list, 0));
1108                     jsonObjectFree(_tmp_params);
1109                     jsonObjectFree(_list);
1110
1111                     osrfStringArray* jump_list = osrfHashGet(fcontext, "jump");
1112
1113                     if (_fparam && jump_list) {
1114                         char* flink = NULL;
1115                         int k = 0;
1116                         while ( (flink = osrfStringArrayGetString(jump_list, k++)) && _fparam ) {
1117                             free(foreign_pkey_value);
1118
1119                             osrfHash* foreign_link_hash = oilsIDLFindPath( "/%s/links/%s", _fparam->classname, flink );
1120
1121                             foreign_pkey_value = oilsFMGetString(_fparam, flink);
1122                             foreign_pkey = osrfHashGet( foreign_link_hash, "key" );
1123
1124                             _tmp_params = jsonParseStringFmt(
1125                                 "[{\"%s\":\"%s\"}]",
1126                                 foreign_pkey,
1127                                 foreign_pkey_value
1128                             );
1129
1130                                 _list = doFieldmapperSearch(
1131                                 ctx,
1132                                 osrfHashGet( oilsIDL(), osrfHashGet( foreign_link_hash, "class" ) ),
1133                                 _tmp_params,
1134                                 &err
1135                             );
1136
1137                             _fparam = jsonObjectClone(jsonObjectGetIndex(_list, 0));
1138                             jsonObjectFree(_tmp_params);
1139                             jsonObjectFree(_list);
1140                         }
1141                     }
1142
1143
1144                     if (!_fparam) {
1145
1146                         growing_buffer* msg = buffer_init(128);
1147                         buffer_fadd(
1148                             msg,
1149                             "%s: no object found with primary key %s of %s",
1150                             MODULENAME,
1151                             foreign_pkey,
1152                             foreign_pkey_value
1153                         );
1154
1155                         char* m = buffer_release(msg);
1156                         osrfAppSessionStatus(
1157                             ctx->session,
1158                             OSRF_STATUS_INTERNALSERVERERROR,
1159                             "osrfMethodException",
1160                             ctx->request,
1161                             m
1162                         );
1163
1164                         free(m);
1165                         osrfStringArrayFree(class_list);
1166                         free(foreign_pkey_value);
1167                         jsonObjectFree(param);
1168
1169                         return 0;
1170                     }
1171
1172                     free(foreign_pkey_value);
1173
1174                     int j = 0;
1175                     char* foreign_field = NULL;
1176                     while ( (foreign_field = osrfStringArrayGetString(osrfHashGet(fcontext,"context"), j++)) ) {
1177                         osrfStringArrayAdd( context_org_array, oilsFMGetString( _fparam, foreign_field ) );
1178                             osrfLogDebug(
1179                             OSRF_LOG_MARK,
1180                             "adding foreign class %s field %s (value: %s) to the context org list",
1181                             class_name,
1182                             foreign_field,
1183                             osrfStringArrayGetString(context_org_array, context_org_array->size - 1)
1184                         );
1185                     }
1186
1187                     jsonObjectFree(_fparam);
1188                 }
1189
1190                 osrfStringArrayFree(class_list);
1191             }
1192         }
1193
1194         jsonObjectFree(param);
1195     }
1196
1197     char* context_org = NULL;
1198     char* perm = NULL;
1199     int OK = 0;
1200
1201     if (permission->size == 0) {
1202             osrfLogDebug( OSRF_LOG_MARK, "No permission specified for this action, passing through" );
1203         OK = 1;
1204     }
1205
1206     int i = 0;
1207     while ( (perm = osrfStringArrayGetString(permission, i++)) ) {
1208         int j = 0;
1209         while ( (context_org = osrfStringArrayGetString(context_org_array, j++)) ) {
1210             dbi_result result;
1211
1212             if (pkey_value) {
1213                     osrfLogDebug(
1214                     OSRF_LOG_MARK,
1215                     "Checking object permission [%s] for user %d on object %s (class %s) at org %d",
1216                     perm,
1217                     userid,
1218                     pkey_value,
1219                     osrfHashGet(class, "classname"),
1220                     atoi(context_org)
1221                 );
1222
1223                 result = dbi_conn_queryf(
1224                     writehandle,
1225                     "SELECT permission.usr_has_object_perm(%d, '%s', '%s', '%s', %d) AS has_perm;",
1226                     userid,
1227                     perm,
1228                     osrfHashGet(class, "classname"),
1229                     pkey_value,
1230                     atoi(context_org)
1231                 );
1232
1233                 if (result) {
1234                     osrfLogDebug(
1235                         OSRF_LOG_MARK,
1236                         "Recieved a result for object permission [%s] for user %d on object %s (class %s) at org %d",
1237                         perm,
1238                         userid,
1239                         pkey_value,
1240                         osrfHashGet(class, "classname"),
1241                         atoi(context_org)
1242                     );
1243
1244                     if (dbi_result_first_row(result)) {
1245                         jsonObject* return_val = oilsMakeJSONFromResult( result );
1246                                                 const char* has_perm = jsonObjectGetString( jsonObjectGetKeyConst(return_val, "has_perm") );
1247
1248                             osrfLogDebug(
1249                             OSRF_LOG_MARK,
1250                             "Status of object permission [%s] for user %d on object %s (class %s) at org %d is %s",
1251                             perm,
1252                             userid,
1253                             pkey_value,
1254                             osrfHashGet(class, "classname"),
1255                             atoi(context_org),
1256                             has_perm
1257                         );
1258
1259                         if ( *has_perm == 't' ) OK = 1;
1260                         jsonObjectFree(return_val);
1261                     }
1262
1263                     dbi_result_free(result);
1264                     if (OK) break;
1265                 }
1266             }
1267
1268                 osrfLogDebug( OSRF_LOG_MARK, "Checking non-object permission [%s] for user %d at org %d", perm, userid, atoi(context_org) );
1269             result = dbi_conn_queryf(
1270                 writehandle,
1271                 "SELECT permission.usr_has_perm(%d, '%s', %d) AS has_perm;",
1272                 userid,
1273                 perm,
1274                 atoi(context_org)
1275             );
1276
1277                         if (result) {
1278                                 osrfLogDebug( OSRF_LOG_MARK, "Received a result for permission [%s] for user %d at org %d",
1279                                                 perm, userid, atoi(context_org) );
1280                                 if ( dbi_result_first_row(result) ) {
1281                                         jsonObject* return_val = oilsMakeJSONFromResult( result );
1282                                         const char* has_perm = jsonObjectGetString( jsonObjectGetKeyConst(return_val, "has_perm") );
1283                                         osrfLogDebug( OSRF_LOG_MARK, "Status of permission [%s] for user %d at org %d is [%s]",
1284                                                         perm, userid, atoi(context_org), has_perm );
1285                                         if ( *has_perm == 't' ) OK = 1;
1286                                         jsonObjectFree(return_val);
1287                                 }
1288
1289                                 dbi_result_free(result);
1290                                 if (OK) break;
1291                         }
1292
1293         }
1294         if (OK) break;
1295     }
1296
1297     if (pkey_value) free(pkey_value);
1298     osrfStringArrayFree(context_org_array);
1299
1300     return OK;
1301 }
1302 #endif
1303
1304
1305 static jsonObject* doCreate(osrfMethodContext* ctx, int* err ) {
1306
1307         osrfHash* meta = osrfHashGet( (osrfHash*) ctx->method->userData, "class" );
1308 #ifdef PCRUD
1309         jsonObject* target = jsonObjectGetIndex( ctx->params, 1 );
1310         jsonObject* options = jsonObjectGetIndex( ctx->params, 2 );
1311 #else
1312         jsonObject* target = jsonObjectGetIndex( ctx->params, 0 );
1313         jsonObject* options = jsonObjectGetIndex( ctx->params, 1 );
1314 #endif
1315
1316         if (!verifyObjectClass(ctx, target)) {
1317                 *err = -1;
1318                 return jsonNULL;
1319         }
1320
1321         osrfLogDebug( OSRF_LOG_MARK, "Object seems to be of the correct type" );
1322
1323         char* trans_id = NULL;
1324         if( ctx->session && ctx->session->userData )
1325                 trans_id = osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" );
1326
1327         if ( !trans_id ) {
1328                 osrfLogError( OSRF_LOG_MARK, "No active transaction -- required for CREATE" );
1329
1330                 osrfAppSessionStatus(
1331                         ctx->session,
1332                         OSRF_STATUS_BADREQUEST,
1333                         "osrfMethodException",
1334                         ctx->request,
1335                         "No active transaction -- required for CREATE"
1336                 );
1337                 *err = -1;
1338                 return jsonNULL;
1339         }
1340
1341         // The following test is harmless but redundant.  If a class is
1342         // readonly, we don't register a create method for it.
1343         if( str_is_true( osrfHashGet( meta, "readonly" ) ) ) {
1344                 osrfAppSessionStatus(
1345                         ctx->session,
1346                         OSRF_STATUS_BADREQUEST,
1347                         "osrfMethodException",
1348                         ctx->request,
1349                         "Cannot INSERT readonly class"
1350                 );
1351                 *err = -1;
1352                 return jsonNULL;
1353         }
1354
1355         // Set the last_xact_id
1356         int index = oilsIDL_ntop( target->classname, "last_xact_id" );
1357         if (index > -1) {
1358                 osrfLogDebug(OSRF_LOG_MARK, "Setting last_xact_id to %s on %s at position %d", trans_id, target->classname, index);
1359                 jsonObjectSetIndex(target, index, jsonNewObject(trans_id));
1360         }
1361
1362         osrfLogDebug( OSRF_LOG_MARK, "There is a transaction running..." );
1363
1364         dbhandle = writehandle;
1365
1366         osrfHash* fields = osrfHashGet(meta, "fields");
1367         char* pkey = osrfHashGet(meta, "primarykey");
1368         char* seq = osrfHashGet(meta, "sequence");
1369
1370         growing_buffer* table_buf = buffer_init(128);
1371         growing_buffer* col_buf = buffer_init(128);
1372         growing_buffer* val_buf = buffer_init(128);
1373
1374         OSRF_BUFFER_ADD(table_buf, "INSERT INTO ");
1375         OSRF_BUFFER_ADD(table_buf, osrfHashGet(meta, "tablename"));
1376         OSRF_BUFFER_ADD_CHAR( col_buf, '(' );
1377         buffer_add(val_buf,"VALUES (");
1378
1379
1380         int i = 0;
1381         int first = 1;
1382         char* field_name;
1383         osrfStringArray* field_list = osrfHashKeys( fields );
1384         while ( (field_name = osrfStringArrayGetString(field_list, i++)) ) {
1385
1386                 osrfHash* field = osrfHashGet( fields, field_name );
1387
1388                 if( str_is_true( osrfHashGet( field, "virtual" ) ) )
1389                         continue;
1390
1391                 const jsonObject* field_object = oilsFMGetObject( target, field_name );
1392
1393                 char* value;
1394                 if (field_object && field_object->classname) {
1395                         value = oilsFMGetString(
1396                                 field_object,
1397                                 (char*)oilsIDLFindPath("/%s/primarykey", field_object->classname)
1398                         );
1399                 } else {
1400                         value = jsonObjectToSimpleString( field_object );
1401                 }
1402
1403
1404                 if (first) {
1405                         first = 0;
1406                 } else {
1407                         OSRF_BUFFER_ADD_CHAR( col_buf, ',' );
1408                         OSRF_BUFFER_ADD_CHAR( val_buf, ',' );
1409                 }
1410
1411                 buffer_add(col_buf, field_name);
1412
1413                 if (!field_object || field_object->type == JSON_NULL) {
1414                         buffer_add( val_buf, "DEFAULT" );
1415
1416                 } else if ( !strcmp(get_primitive( field ), "number") ) {
1417                         const char* numtype = get_datatype( field );
1418                         if ( !strcmp( numtype, "INT8") ) {
1419                                 buffer_fadd( val_buf, "%lld", atoll(value) );
1420
1421                         } else if ( !strcmp( numtype, "INT") ) {
1422                                 buffer_fadd( val_buf, "%d", atoi(value) );
1423
1424                         } else if ( !strcmp( numtype, "NUMERIC") ) {
1425                                 buffer_fadd( val_buf, "%f", atof(value) );
1426                         }
1427                 } else {
1428                         if ( dbi_conn_quote_string(writehandle, &value) ) {
1429                                 OSRF_BUFFER_ADD( val_buf, value );
1430
1431                         } else {
1432                                 osrfLogError(OSRF_LOG_MARK, "%s: Error quoting string [%s]", MODULENAME, value);
1433                                 osrfAppSessionStatus(
1434                                         ctx->session,
1435                                         OSRF_STATUS_INTERNALSERVERERROR,
1436                                         "osrfMethodException",
1437                                         ctx->request,
1438                                         "Error quoting string -- please see the error log for more details"
1439                                 );
1440                                 free(value);
1441                                 buffer_free(table_buf);
1442                                 buffer_free(col_buf);
1443                                 buffer_free(val_buf);
1444                                 *err = -1;
1445                                 return jsonNULL;
1446                         }
1447                 }
1448
1449                 free(value);
1450
1451         }
1452
1453
1454         OSRF_BUFFER_ADD_CHAR( col_buf, ')' );
1455         OSRF_BUFFER_ADD_CHAR( val_buf, ')' );
1456
1457         char* table_str = buffer_release(table_buf);
1458         char* col_str   = buffer_release(col_buf);
1459         char* val_str   = buffer_release(val_buf);
1460         growing_buffer* sql = buffer_init(128);
1461         buffer_fadd( sql, "%s %s %s;", table_str, col_str, val_str );
1462         free(table_str);
1463         free(col_str);
1464         free(val_str);
1465
1466         char* query = buffer_release(sql);
1467
1468         osrfLogDebug(OSRF_LOG_MARK, "%s: Insert SQL [%s]", MODULENAME, query);
1469
1470
1471         dbi_result result = dbi_conn_query(writehandle, query);
1472
1473         jsonObject* obj = NULL;
1474
1475         if (!result) {
1476                 obj = jsonNewObject(NULL);
1477                 osrfLogError(
1478                         OSRF_LOG_MARK,
1479                         "%s ERROR inserting %s object using query [%s]",
1480                         MODULENAME,
1481                         osrfHashGet(meta, "fieldmapper"),
1482                         query
1483                 );
1484                 osrfAppSessionStatus(
1485                         ctx->session,
1486                         OSRF_STATUS_INTERNALSERVERERROR,
1487                         "osrfMethodException",
1488                         ctx->request,
1489                         "INSERT error -- please see the error log for more details"
1490                 );
1491                 *err = -1;
1492         } else {
1493
1494                 char* id = oilsFMGetString(target, pkey);
1495                 if (!id) {
1496                         unsigned long long new_id = dbi_conn_sequence_last(writehandle, seq);
1497                         growing_buffer* _id = buffer_init(10);
1498                         buffer_fadd(_id, "%lld", new_id);
1499                         id = buffer_release(_id);
1500                 }
1501
1502                 // Find quietness specification, if present
1503                 const char* quiet_str = NULL;
1504                 if ( options ) {
1505                         const jsonObject* quiet_obj = jsonObjectGetKeyConst( options, "quiet" );
1506                         if( quiet_obj )
1507                                 quiet_str = jsonObjectGetString( quiet_obj );
1508                 }
1509
1510                 if( str_is_true( quiet_str ) ) {  // if quietness is specified
1511                         obj = jsonNewObject(id);
1512                 }
1513                 else {
1514
1515                         jsonObject* fake_params = jsonNewObjectType(JSON_ARRAY);
1516                         jsonObjectPush(fake_params, jsonNewObjectType(JSON_HASH));
1517
1518                         jsonObjectSetKey(
1519                                 jsonObjectGetIndex(fake_params, 0),
1520                                 pkey,
1521                                 jsonNewObject(id)
1522                         );
1523
1524                         jsonObject* list = doFieldmapperSearch( ctx,meta, fake_params, err);
1525
1526                         if(*err) {
1527                                 jsonObjectFree( fake_params );
1528                                 obj = jsonNULL;
1529                         } else {
1530                                 obj = jsonObjectClone( jsonObjectGetIndex(list, 0) );
1531                         }
1532
1533                         jsonObjectFree( list );
1534                         jsonObjectFree( fake_params );
1535                 }
1536
1537                 free(id);
1538         }
1539
1540         free(query);
1541
1542         return obj;
1543
1544 }
1545
1546
1547 static jsonObject* doRetrieve(osrfMethodContext* ctx, int* err ) {
1548
1549     int id_pos = 0;
1550     int order_pos = 1;
1551
1552 #ifdef PCRUD
1553     id_pos = 1;
1554     order_pos = 2;
1555 #endif
1556
1557         osrfHash* meta = osrfHashGet( (osrfHash*) ctx->method->userData, "class" );
1558
1559         const char* id = jsonObjectGetString(jsonObjectGetIndex(ctx->params, id_pos));
1560         jsonObject* order_hash = jsonObjectGetIndex(ctx->params, order_pos);
1561
1562         osrfLogDebug(
1563                 OSRF_LOG_MARK,
1564                 "%s retrieving %s object with primary key value of %s",
1565                 MODULENAME,
1566                 osrfHashGet(meta, "fieldmapper"),
1567                 id
1568         );
1569
1570         jsonObject* fake_params = jsonNewObjectType(JSON_ARRAY);
1571         jsonObjectPush(fake_params, jsonNewObjectType(JSON_HASH));
1572
1573         jsonObjectSetKey(
1574                 jsonObjectGetIndex(fake_params, 0),
1575                 osrfHashGet(meta, "primarykey"),
1576                 jsonObjectClone(jsonObjectGetIndex(ctx->params, id_pos))
1577         );
1578
1579
1580         if (order_hash) jsonObjectPush(fake_params, jsonObjectClone(order_hash) );
1581
1582         jsonObject* list = doFieldmapperSearch( ctx,meta, fake_params, err);
1583
1584         if(*err) {
1585                 jsonObjectFree( fake_params );
1586                 return jsonNULL;
1587         }
1588
1589         jsonObject* obj = jsonObjectClone( jsonObjectGetIndex(list, 0) );
1590
1591         jsonObjectFree( list );
1592         jsonObjectFree( fake_params );
1593
1594 #ifdef PCRUD
1595         if(!verifyObjectPCRUD(ctx, obj)) {
1596         jsonObjectFree(obj);
1597         *err = -1;
1598
1599         growing_buffer* msg = buffer_init(128);
1600                 OSRF_BUFFER_ADD( msg, MODULENAME );
1601                 OSRF_BUFFER_ADD( msg, ": Insufficient permissions to retrieve object" );
1602
1603         char* m = buffer_release(msg);
1604         osrfAppSessionStatus( ctx->session, OSRF_STATUS_NOTALLOWED, "osrfMethodException", ctx->request, m );
1605
1606         free(m);
1607
1608                 return jsonNULL;
1609         }
1610 #endif
1611
1612         return obj;
1613 }
1614
1615 static char* jsonNumberToDBString ( osrfHash* field, const jsonObject* value ) {
1616         growing_buffer* val_buf = buffer_init(32);
1617         const char* numtype = get_datatype( field );
1618
1619         if ( !strncmp( numtype, "INT", 3 ) ) {
1620                 if (value->type == JSON_NUMBER)
1621                         //buffer_fadd( val_buf, "%ld", (long)jsonObjectGetNumber(value) );
1622                         buffer_fadd( val_buf, jsonObjectGetString( value ) );
1623                 else {
1624                         //const char* val_str = jsonObjectGetString( value );
1625                         //buffer_fadd( val_buf, "%ld", atol(val_str) );
1626                         buffer_fadd( val_buf, jsonObjectGetString( value ) );
1627                 }
1628
1629         } else if ( !strcmp( numtype, "NUMERIC" ) ) {
1630                 if (value->type == JSON_NUMBER)
1631                         //buffer_fadd( val_buf, "%f",  jsonObjectGetNumber(value) );
1632                         buffer_fadd( val_buf, jsonObjectGetString( value ) );
1633                 else {
1634                         //const char* val_str = jsonObjectGetString( value );
1635                         //buffer_fadd( val_buf, "%f", atof(val_str) );
1636                         buffer_fadd( val_buf, jsonObjectGetString( value ) );
1637                 }
1638
1639         } else {
1640                 // Presumably this was really intended ot be a string, so quote it
1641                 char* str = jsonObjectToSimpleString( value );
1642                 if ( dbi_conn_quote_string(dbhandle, &str) ) {
1643                         OSRF_BUFFER_ADD( val_buf, str );
1644                         free(str);
1645                 } else {
1646                         osrfLogError(OSRF_LOG_MARK, "%s: Error quoting key string [%s]", MODULENAME, str);
1647                         free(str);
1648                         buffer_free(val_buf);
1649                         return NULL;
1650                 }
1651         }
1652
1653         return buffer_release(val_buf);
1654 }
1655
1656 static char* searchINPredicate (const char* class, osrfHash* field,
1657                 jsonObject* node, const char* op, osrfMethodContext* ctx ) {
1658         growing_buffer* sql_buf = buffer_init(32);
1659
1660         buffer_fadd(
1661                 sql_buf,
1662                 "\"%s\".%s ",
1663                 class,
1664                 osrfHashGet(field, "name")
1665         );
1666
1667         if (!op) {
1668                 buffer_add(sql_buf, "IN (");
1669         } else if (!(strcasecmp(op,"not in"))) {
1670                 buffer_add(sql_buf, "NOT IN (");
1671         } else {
1672                 buffer_add(sql_buf, "IN (");
1673         }
1674
1675     if (node->type == JSON_HASH) {
1676         // subquery predicate
1677         char* subpred = SELECT(
1678             ctx,
1679             jsonObjectGetKey( node, "select" ),
1680             jsonObjectGetKey( node, "from" ),
1681             jsonObjectGetKey( node, "where" ),
1682             jsonObjectGetKey( node, "having" ),
1683             jsonObjectGetKey( node, "order_by" ),
1684             jsonObjectGetKey( node, "limit" ),
1685             jsonObjectGetKey( node, "offset" ),
1686             SUBSELECT
1687         );
1688
1689                 if( subpred ) {
1690                         buffer_add(sql_buf, subpred);
1691                         free(subpred);
1692                 } else {
1693                         buffer_free( sql_buf );
1694                         return NULL;
1695                 }
1696
1697     } else if (node->type == JSON_ARRAY) {
1698         // literal value list
1699         int in_item_index = 0;
1700         int in_item_first = 1;
1701         const jsonObject* in_item;
1702         while ( (in_item = jsonObjectGetIndex(node, in_item_index++)) ) {
1703
1704                         if (in_item_first)
1705                                 in_item_first = 0;
1706                         else
1707                                 buffer_add(sql_buf, ", ");
1708
1709                         // Sanity check
1710                         if ( in_item->type != JSON_STRING && in_item->type != JSON_NUMBER ) {
1711                                 osrfLogError(OSRF_LOG_MARK, "%s: Expected string or number within IN list; found %s",
1712                                                 MODULENAME, json_type( in_item->type ) );
1713                                                                         buffer_free(sql_buf);
1714                                 return NULL;
1715                         }
1716
1717                         // Append the literal value -- quoted if not a number
1718                         if ( JSON_NUMBER == in_item->type ) {
1719                                 char* val = jsonNumberToDBString( field, in_item );
1720                                 OSRF_BUFFER_ADD( sql_buf, val );
1721                                 free(val);
1722
1723                         } else if ( !strcmp( get_primitive( field ), "number") ) {
1724                                 char* val = jsonNumberToDBString( field, in_item );
1725                                 OSRF_BUFFER_ADD( sql_buf, val );
1726                                 free(val);
1727
1728                         } else {
1729                                 char* key_string = jsonObjectToSimpleString(in_item);
1730                                 if ( dbi_conn_quote_string(dbhandle, &key_string) ) {
1731                                         OSRF_BUFFER_ADD( sql_buf, key_string );
1732                                         free(key_string);
1733                                 } else {
1734                                         osrfLogError(OSRF_LOG_MARK, "%s: Error quoting key string [%s]", MODULENAME, key_string);
1735                                         free(key_string);
1736                                         buffer_free(sql_buf);
1737                                         return NULL;
1738                                 }
1739                         }
1740                 }
1741
1742                 if( in_item_first ) {
1743                         osrfLogError(OSRF_LOG_MARK, "%s: Empty IN list", MODULENAME );
1744                         buffer_free( sql_buf );
1745                         return NULL;
1746                 }
1747         } else {
1748                 osrfLogError(OSRF_LOG_MARK, "%s: Expected object or array for IN clause; found %s",
1749                         MODULENAME, json_type( node->type ) );
1750                 buffer_free(sql_buf);
1751                 return NULL;
1752         }
1753
1754         OSRF_BUFFER_ADD_CHAR( sql_buf, ')' );
1755
1756         return buffer_release(sql_buf);
1757 }
1758
1759 // Receive a JSON_ARRAY representing a function call.  The first
1760 // entry in the array is the function name.  The rest are parameters.
1761 static char* searchValueTransform( const jsonObject* array ) {
1762
1763         if( array->size < 1 ) {
1764                 osrfLogError(OSRF_LOG_MARK, "%s: Empty array for value transform", MODULENAME);
1765                 return NULL;
1766         }
1767
1768         // Get the function name
1769         jsonObject* func_item = jsonObjectGetIndex( array, 0 );
1770         if( func_item->type != JSON_STRING ) {
1771                 osrfLogError(OSRF_LOG_MARK, "%s: Error: expected function name, found %s",
1772                         MODULENAME, json_type( func_item->type ) );
1773                 return NULL;
1774         }
1775
1776         growing_buffer* sql_buf = buffer_init(32);
1777
1778         OSRF_BUFFER_ADD( sql_buf, jsonObjectGetString( func_item ) );
1779         OSRF_BUFFER_ADD( sql_buf, "( " );
1780
1781         // Get the parameters
1782         int func_item_index = 1;   // We already grabbed the zeroth entry
1783         while ( (func_item = jsonObjectGetIndex(array, func_item_index++)) ) {
1784
1785                 // Add a separator comma, if we need one
1786                 if( func_item_index > 2 )
1787                         buffer_add( sql_buf, ", " );
1788
1789                 // Add the current parameter
1790                 if (func_item->type == JSON_NULL) {
1791                         buffer_add( sql_buf, "NULL" );
1792                 } else {
1793                         char* val = jsonObjectToSimpleString(func_item);
1794                         if ( dbi_conn_quote_string(dbhandle, &val) ) {
1795                                 OSRF_BUFFER_ADD( sql_buf, val );
1796                                 free(val);
1797                         } else {
1798                                 osrfLogError(OSRF_LOG_MARK, "%s: Error quoting key string [%s]", MODULENAME, val);
1799                                 buffer_free(sql_buf);
1800                                 free(val);
1801                                 return NULL;
1802                         }
1803                 }
1804         }
1805
1806         buffer_add( sql_buf, " )" );
1807
1808         return buffer_release(sql_buf);
1809 }
1810
1811 static char* searchFunctionPredicate (const char* class, osrfHash* field,
1812                 const jsonObject* node, const char* op) {
1813
1814         if( ! is_good_operator( op ) ) {
1815                 osrfLogError( OSRF_LOG_MARK, "%s: Invalid operator [%s]", MODULENAME, op );
1816                 return NULL;
1817         }
1818
1819         char* val = searchValueTransform(node);
1820         if( !val )
1821                 return NULL;
1822
1823         growing_buffer* sql_buf = buffer_init(32);
1824         buffer_fadd(
1825                 sql_buf,
1826                 "\"%s\".%s %s %s",
1827                 class,
1828                 osrfHashGet(field, "name"),
1829                 op,
1830                 val
1831         );
1832
1833         free(val);
1834
1835         return buffer_release(sql_buf);
1836 }
1837
1838 // class is a class name
1839 // field is a field definition as stored in the IDL
1840 // node comes from the method parameter, and may represent an entry in the SELECT list
1841 static char* searchFieldTransform (const char* class, osrfHash* field, const jsonObject* node) {
1842         growing_buffer* sql_buf = buffer_init(32);
1843
1844         const char* field_transform = jsonObjectGetString( jsonObjectGetKeyConst( node, "transform" ) );
1845         const char* transform_subcolumn = jsonObjectGetString( jsonObjectGetKeyConst( node, "result_field" ) );
1846
1847         if(transform_subcolumn) {
1848                 if( ! is_identifier( transform_subcolumn ) ) {
1849                         osrfLogError( OSRF_LOG_MARK, "%s: Invalid subfield name: \"%s\"\n",
1850                                         MODULENAME, transform_subcolumn );
1851                         buffer_free( sql_buf );
1852                         return NULL;
1853                 }
1854                 OSRF_BUFFER_ADD_CHAR( sql_buf, '(' );    // enclose transform in parentheses
1855         }
1856
1857         if (field_transform) {
1858
1859                 if( ! is_identifier( field_transform ) ) {
1860                         osrfLogError( OSRF_LOG_MARK, "%s: Expected function name, found \"%s\"\n",
1861                                         MODULENAME, field_transform );
1862                         buffer_free( sql_buf );
1863                         return NULL;
1864                 }
1865
1866                 buffer_fadd( sql_buf, "%s(\"%s\".%s", field_transform, class, osrfHashGet(field, "name"));
1867                 const jsonObject* array = jsonObjectGetKeyConst( node, "params" );
1868
1869                 if (array) {
1870                         if( array->type != JSON_ARRAY ) {
1871                                 osrfLogError( OSRF_LOG_MARK,
1872                                         "%s: Expected JSON_ARRAY for function params; found %s",
1873                                         MODULENAME, json_type( array->type ) );
1874                                 buffer_free( sql_buf );
1875                                 return NULL;
1876                         }
1877                         int func_item_index = 0;
1878                         jsonObject* func_item;
1879                         while ( (func_item = jsonObjectGetIndex(array, func_item_index++)) ) {
1880
1881                                 char* val = jsonObjectToSimpleString(func_item);
1882
1883                                 if ( !val ) {
1884                                         buffer_add( sql_buf, ",NULL" );
1885                                 } else if ( dbi_conn_quote_string(dbhandle, &val) ) {
1886                                         OSRF_BUFFER_ADD_CHAR( sql_buf, ',' );
1887                                         OSRF_BUFFER_ADD( sql_buf, val );
1888                                 } else {
1889                                         osrfLogError(OSRF_LOG_MARK, "%s: Error quoting key string [%s]", MODULENAME, val);
1890                                         free(val);
1891                                         buffer_free(sql_buf);
1892                                         return NULL;
1893                         }
1894                                 free(val);
1895                         }
1896                 }
1897
1898                 buffer_add( sql_buf, " )" );
1899
1900         } else {
1901                 buffer_fadd( sql_buf, "\"%s\".%s", class, osrfHashGet(field, "name"));
1902         }
1903
1904         if (transform_subcolumn)
1905                 buffer_fadd( sql_buf, ").\"%s\"", transform_subcolumn );
1906
1907         return buffer_release(sql_buf);
1908 }
1909
1910 static char* searchFieldTransformPredicate (const char* class, osrfHash* field,
1911                 const jsonObject* node, const char* op ) {
1912
1913         if( ! is_good_operator( op ) ) {
1914                 osrfLogError(OSRF_LOG_MARK, "%s: Error: Invalid operator %s", MODULENAME, op);
1915                 return NULL;
1916         }
1917
1918         char* field_transform = searchFieldTransform( class, field, node );
1919         if( ! field_transform )
1920                 return NULL;
1921         char* value = NULL;
1922         int extra_parens = 0;   // boolean
1923
1924         const jsonObject* value_obj = jsonObjectGetKeyConst( node, "value" );
1925         if ( ! value_obj ) {
1926                 value = searchWHERE( node, osrfHashGet( oilsIDL(), class ), AND_OP_JOIN, NULL );
1927                 if( !value ) {
1928                         osrfLogError(OSRF_LOG_MARK, "%s: Error building condition for field transform", MODULENAME);
1929                         free(field_transform);
1930                         return NULL;
1931                 }
1932                 extra_parens = 1;
1933         } else if ( value_obj->type == JSON_ARRAY ) {
1934                 value = searchValueTransform( value_obj );
1935                 if( !value ) {
1936                         osrfLogError(OSRF_LOG_MARK, "%s: Error building value transform for field transform", MODULENAME);
1937                         free( field_transform );
1938                         return NULL;
1939                 }
1940         } else if ( value_obj->type == JSON_HASH ) {
1941                 value = searchWHERE( value_obj, osrfHashGet( oilsIDL(), class ), AND_OP_JOIN, NULL );
1942                 if( !value ) {
1943                         osrfLogError(OSRF_LOG_MARK, "%s: Error building predicate for field transform", MODULENAME);
1944                         free(field_transform);
1945                         return NULL;
1946                 }
1947                 extra_parens = 1;
1948         } else if ( value_obj->type == JSON_NUMBER ) {
1949                 value = jsonNumberToDBString( field, value_obj );
1950         } else if ( value_obj->type == JSON_NULL ) {
1951                 osrfLogError(OSRF_LOG_MARK, "%s: Error building predicate for field transform: null value", MODULENAME);
1952                 free(field_transform);
1953                 return NULL;
1954         } else if ( value_obj->type == JSON_BOOL ) {
1955                 osrfLogError(OSRF_LOG_MARK, "%s: Error building predicate for field transform: boolean value", MODULENAME);
1956                 free(field_transform);
1957                 return NULL;
1958         } else {
1959                 if ( !strcmp( get_primitive( field ), "number") ) {
1960                         value = jsonNumberToDBString( field, value_obj );
1961                 } else {
1962                         value = jsonObjectToSimpleString( value_obj );
1963                         if ( !dbi_conn_quote_string(dbhandle, &value) ) {
1964                                 osrfLogError(OSRF_LOG_MARK, "%s: Error quoting key string [%s]", MODULENAME, value);
1965                                 free(value);
1966                                 free(field_transform);
1967                                 return NULL;
1968                         }
1969                 }
1970         }
1971
1972         const char* left_parens  = "";
1973         const char* right_parens = "";
1974
1975         if( extra_parens ) {
1976                 left_parens  = "(";
1977                 right_parens = ")";
1978         }
1979
1980         growing_buffer* sql_buf = buffer_init(32);
1981
1982         buffer_fadd(
1983                 sql_buf,
1984                 "%s%s %s %s %s %s%s",
1985                 left_parens,
1986                 field_transform,
1987                 op,
1988                 left_parens,
1989                 value,
1990                 right_parens,
1991                 right_parens
1992         );
1993
1994         free(value);
1995         free(field_transform);
1996
1997         return buffer_release(sql_buf);
1998 }
1999
2000 static char* searchSimplePredicate (const char* op, const char* class,
2001                 osrfHash* field, const jsonObject* node) {
2002
2003         if( ! is_good_operator( op ) ) {
2004                 osrfLogError( OSRF_LOG_MARK, "%s: Invalid operator [%s]", MODULENAME, op );
2005                 return NULL;
2006         }
2007
2008         char* val = NULL;
2009
2010         // Get the value to which we are comparing the specified column
2011         if (node->type != JSON_NULL) {
2012                 if ( node->type == JSON_NUMBER ) {
2013                         val = jsonNumberToDBString( field, node );
2014                 } else if ( !strcmp( get_primitive( field ), "number" ) ) {
2015                         val = jsonNumberToDBString( field, node );
2016                 } else {
2017                         val = jsonObjectToSimpleString(node);
2018                 }
2019         }
2020
2021         if( val ) {
2022                 if( JSON_NUMBER != node->type && strcmp( get_primitive( field ), "number") ) {
2023                         // Value is not numeric; enclose it in quotes
2024                         if ( !dbi_conn_quote_string( dbhandle, &val ) ) {
2025                                 osrfLogError( OSRF_LOG_MARK, "%s: Error quoting key string [%s]", MODULENAME, val );
2026                                 free( val );
2027                                 return NULL;
2028                         }
2029                 }
2030         } else {
2031                 // Compare to a null value
2032                 val = strdup( "NULL" );
2033                 if (strcmp( op, "=" ))
2034                         op = "IS NOT";
2035                 else
2036                         op = "IS";
2037         }
2038
2039         growing_buffer* sql_buf = buffer_init(32);
2040         buffer_fadd( sql_buf, "\"%s\".%s %s %s", class, osrfHashGet(field, "name"), op, val );
2041         char* pred = buffer_release( sql_buf );
2042
2043         free(val);
2044
2045         return pred;
2046 }
2047
2048 static char* searchBETWEENPredicate (const char* class, osrfHash* field, const jsonObject* node) {
2049
2050         const jsonObject* x_node = jsonObjectGetIndex( node, 0 );
2051         const jsonObject* y_node = jsonObjectGetIndex( node, 1 );
2052
2053         if( NULL == y_node ) {
2054                 osrfLogError( OSRF_LOG_MARK, "%s: Not enough operands for BETWEEN operator", MODULENAME );
2055                 return NULL;
2056         }
2057         else if( NULL != jsonObjectGetIndex( node, 2 ) ) {
2058                 osrfLogError( OSRF_LOG_MARK, "%s: Too many operands for BETWEEN operator", MODULENAME );
2059                 return NULL;
2060         }
2061
2062         char* x_string;
2063         char* y_string;
2064
2065         if ( !strcmp( get_primitive( field ), "number") ) {
2066                 x_string = jsonNumberToDBString(field, x_node);
2067                 y_string = jsonNumberToDBString(field, y_node);
2068
2069         } else {
2070                 x_string = jsonObjectToSimpleString(x_node);
2071                 y_string = jsonObjectToSimpleString(y_node);
2072                 if ( !(dbi_conn_quote_string(dbhandle, &x_string) && dbi_conn_quote_string(dbhandle, &y_string)) ) {
2073                         osrfLogError(OSRF_LOG_MARK, "%s: Error quoting key strings [%s] and [%s]",
2074                                         MODULENAME, x_string, y_string);
2075                         free(x_string);
2076                         free(y_string);
2077                         return NULL;
2078                 }
2079         }
2080
2081         growing_buffer* sql_buf = buffer_init(32);
2082         buffer_fadd( sql_buf, "%s BETWEEN %s AND %s", osrfHashGet(field, "name"), x_string, y_string );
2083         free(x_string);
2084         free(y_string);
2085
2086         return buffer_release(sql_buf);
2087 }
2088
2089 static char* searchPredicate ( const char* class, osrfHash* field,
2090                                                            jsonObject* node, osrfMethodContext* ctx ) {
2091
2092         char* pred = NULL;
2093         if (node->type == JSON_ARRAY) { // equality IN search
2094                 pred = searchINPredicate( class, field, node, NULL, ctx );
2095         } else if (node->type == JSON_HASH) { // other search
2096                 jsonIterator* pred_itr = jsonNewIterator( node );
2097                 if( !jsonIteratorHasNext( pred_itr ) ) {
2098                         osrfLogError( OSRF_LOG_MARK, "%s: Empty predicate for field \"%s\"",
2099                                         MODULENAME, osrfHashGet(field, "name") );
2100                 } else {
2101                         jsonObject* pred_node = jsonIteratorNext( pred_itr );
2102
2103                         // Verify that there are no additional predicates
2104                         if( jsonIteratorHasNext( pred_itr ) ) {
2105                                 osrfLogError( OSRF_LOG_MARK, "%s: Multiple predicates for field \"%s\"",
2106                                                 MODULENAME, osrfHashGet(field, "name") );
2107                         } else if ( !(strcasecmp( pred_itr->key,"between" )) )
2108                                 pred = searchBETWEENPredicate( class, field, pred_node );
2109                         else if ( !(strcasecmp( pred_itr->key,"in" )) || !(strcasecmp( pred_itr->key,"not in" )) )
2110                                 pred = searchINPredicate( class, field, pred_node, pred_itr->key, ctx );
2111                         else if ( pred_node->type == JSON_ARRAY )
2112                                 pred = searchFunctionPredicate( class, field, pred_node, pred_itr->key );
2113                         else if ( pred_node->type == JSON_HASH )
2114                                 pred = searchFieldTransformPredicate( class, field, pred_node, pred_itr->key );
2115                         else
2116                                 pred = searchSimplePredicate( pred_itr->key, class, field, pred_node );
2117                 }
2118                 jsonIteratorFree(pred_itr);
2119
2120         } else if (node->type == JSON_NULL) { // IS NULL search
2121                 growing_buffer* _p = buffer_init(64);
2122                 buffer_fadd(
2123                         _p,
2124                         "\"%s\".%s IS NULL",
2125                         class,
2126                         osrfHashGet(field, "name")
2127                 );
2128                 pred = buffer_release(_p);
2129         } else { // equality search
2130                 pred = searchSimplePredicate( "=", class, field, node );
2131         }
2132
2133         return pred;
2134
2135 }
2136
2137
2138 /*
2139
2140 join : {
2141         acn : {
2142                 field : record,
2143                 fkey : id
2144                 type : left
2145                 filter_op : or
2146                 filter : { ... },
2147                 join : {
2148                         acp : {
2149                                 field : call_number,
2150                                 fkey : id,
2151                                 filter : { ... },
2152                         },
2153                 },
2154         },
2155         mrd : {
2156                 field : record,
2157                 type : inner
2158                 fkey : id,
2159                 filter : { ... },
2160         }
2161 }
2162
2163 */
2164
2165 static char* searchJOIN ( const jsonObject* join_hash, osrfHash* leftmeta ) {
2166
2167         const jsonObject* working_hash;
2168         jsonObject* freeable_hash = NULL;
2169
2170         if (join_hash->type == JSON_STRING) {
2171                 // create a wrapper around a copy of the original
2172                 const char* _tmp = jsonObjectGetString( join_hash );
2173                 freeable_hash = jsonNewObjectType(JSON_HASH);
2174                 jsonObjectSetKey(freeable_hash, _tmp, NULL);
2175                 working_hash = freeable_hash;
2176         }
2177         else {
2178                 if( join_hash->type != JSON_HASH ) {
2179                         osrfLogError(
2180                                 OSRF_LOG_MARK,
2181                                 "%s: JOIN failed; expected JSON object type not found",
2182                                 MODULENAME
2183                         );
2184                         return NULL;
2185                 }
2186                 working_hash = join_hash;
2187         }
2188
2189         growing_buffer* join_buf = buffer_init(128);
2190         const char* leftclass = osrfHashGet(leftmeta, "classname");
2191
2192         jsonObject* snode = NULL;
2193         jsonIterator* search_itr = jsonNewIterator( working_hash );
2194
2195         while ( (snode = jsonIteratorNext( search_itr )) ) {
2196                 const char* class = search_itr->key;
2197                 osrfHash* idlClass = osrfHashGet( oilsIDL(), class );
2198                 if( !idlClass ) {
2199                         osrfLogError(
2200                                 OSRF_LOG_MARK,
2201                                 "%s: JOIN failed.  No class \"%s\" defined in IDL",
2202                                 MODULENAME,
2203                                 search_itr->key
2204                         );
2205                         jsonIteratorFree( search_itr );
2206                         buffer_free( join_buf );
2207                         if( freeable_hash )
2208                                 jsonObjectFree( freeable_hash );
2209                         return NULL;
2210                 }
2211
2212                 const char* fkey = jsonObjectGetString( jsonObjectGetKeyConst( snode, "fkey" ) );
2213                 const char* field = jsonObjectGetString( jsonObjectGetKeyConst( snode, "field" ) );
2214
2215                 if (field && !fkey) {
2216                         // Look up the corresponding join column in the IDL.
2217                         // The link must be defined in the child table,
2218                         // and point to the right parent table.
2219                         osrfHash* idl_link = (osrfHash*) oilsIDLFindPath( "/%s/links/%s", class, field );
2220                         const char* reltype = NULL;
2221                         const char* other_class = NULL;
2222                         reltype = osrfHashGet( idl_link, "reltype" );
2223                         if( reltype && strcmp( reltype, "has_many" ) )
2224                                 other_class = osrfHashGet( idl_link, "class" );
2225                         if( other_class && !strcmp( other_class, leftclass ) )
2226                                 fkey = osrfHashGet( idl_link, "key" );
2227                         if (!fkey) {
2228                                 osrfLogError(
2229                                         OSRF_LOG_MARK,
2230                                         "%s: JOIN failed.  No link defined from %s.%s to %s",
2231                                         MODULENAME,
2232                                         class,
2233                                         field,
2234                                         leftclass
2235                                 );
2236                                 buffer_free(join_buf);
2237                                 if(freeable_hash)
2238                                         jsonObjectFree(freeable_hash);
2239                                 jsonIteratorFree(search_itr);
2240                                 return NULL;
2241                         }
2242
2243                 } else if (!field && fkey) {
2244                         // Look up the corresponding join column in the IDL.
2245                         // The link must be defined in the child table,
2246                         // and point to the right parent table.
2247                         osrfHash* idl_link = (osrfHash*) oilsIDLFindPath( "/%s/links/%s", leftclass, fkey );
2248                         const char* reltype = NULL;
2249                         const char* other_class = NULL;
2250                         reltype = osrfHashGet( idl_link, "reltype" );
2251                         if( reltype && strcmp( reltype, "has_many" ) )
2252                                 other_class = osrfHashGet( idl_link, "class" );
2253                         if( other_class && !strcmp( other_class, class ) )
2254                                 field = osrfHashGet( idl_link, "key" );
2255                         if (!field) {
2256                                 osrfLogError(
2257                                         OSRF_LOG_MARK,
2258                                         "%s: JOIN failed.  No link defined from %s.%s to %s",
2259                                         MODULENAME,
2260                                         leftclass,
2261                                         fkey,
2262                                         class
2263                                 );
2264                                 buffer_free(join_buf);
2265                                 if(freeable_hash)
2266                                         jsonObjectFree(freeable_hash);
2267                                 jsonIteratorFree(search_itr);
2268                                 return NULL;
2269                         }
2270
2271                 } else if (!field && !fkey) {
2272                         osrfHash* _links = oilsIDL_links( leftclass );
2273
2274                         // For each link defined for the left class:
2275                         // see if the link references the joined class
2276                         osrfHashIterator* itr = osrfNewHashIterator( _links );
2277                         osrfHash* curr_link = NULL;
2278                         while( (curr_link = osrfHashIteratorNext( itr ) ) ) {
2279                                 const char* other_class = osrfHashGet( curr_link, "class" );
2280                                 if( other_class && !strcmp( other_class, class ) ) {
2281
2282                                         // In the IDL, the parent class doesn't know then names of the child
2283                                         // columns that are pointing to it, so don't use that end of the link
2284                                         const char* reltype = osrfHashGet( curr_link, "reltype" );
2285                                         if( reltype && strcmp( reltype, "has_many" ) ) {
2286                                                 // Found a link between the classes
2287                                                 fkey = osrfHashIteratorKey( itr );
2288                                                 field = osrfHashGet( curr_link, "key" );
2289                                                 break;
2290                                         }
2291                                 }
2292                         }
2293                         osrfHashIteratorFree( itr );
2294
2295                         if (!field || !fkey) {
2296                                 // Do another such search, with the classes reversed
2297                                 _links = oilsIDL_links( class );
2298
2299                                 // For each link defined for the joined class:
2300                                 // see if the link references the left class
2301                                 osrfHashIterator* itr = osrfNewHashIterator( _links );
2302                                 osrfHash* curr_link = NULL;
2303                                 while( (curr_link = osrfHashIteratorNext( itr ) ) ) {
2304                                         const char* other_class = osrfHashGet( curr_link, "class" );
2305                                         if( other_class && !strcmp( other_class, leftclass ) ) {
2306
2307                                                 // In the IDL, the parent class doesn't know then names of the child
2308                                                 // columns that are pointing to it, so don't use that end of the link
2309                                                 const char* reltype = osrfHashGet( curr_link, "reltype" );
2310                                                 if( reltype && strcmp( reltype, "has_many" ) ) {
2311                                                         // Found a link between the classes
2312                                                         field = osrfHashIteratorKey( itr );
2313                                                         fkey = osrfHashGet( curr_link, "key" );
2314                                                         break;
2315                                                 }
2316                                         }
2317                                 }
2318                                 osrfHashIteratorFree( itr );
2319                         }
2320
2321                         if (!field || !fkey) {
2322                                 osrfLogError(
2323                                         OSRF_LOG_MARK,
2324                                         "%s: JOIN failed.  No link defined between %s and %s",
2325                                         MODULENAME,
2326                                         leftclass,
2327                                         class
2328                                 );
2329                                 buffer_free(join_buf);
2330                                 if(freeable_hash)
2331                                         jsonObjectFree(freeable_hash);
2332                                 jsonIteratorFree(search_itr);
2333                                 return NULL;
2334                         }
2335
2336                 }
2337
2338                 const char* type = jsonObjectGetString( jsonObjectGetKeyConst( snode, "type" ) );
2339                 if (type) {
2340                         if ( !strcasecmp(type,"left") ) {
2341                                 buffer_add(join_buf, " LEFT JOIN");
2342                         } else if ( !strcasecmp(type,"right") ) {
2343                                 buffer_add(join_buf, " RIGHT JOIN");
2344                         } else if ( !strcasecmp(type,"full") ) {
2345                                 buffer_add(join_buf, " FULL JOIN");
2346                         } else {
2347                                 buffer_add(join_buf, " INNER JOIN");
2348                         }
2349                 } else {
2350                         buffer_add(join_buf, " INNER JOIN");
2351                 }
2352
2353                 char* table = getSourceDefinition(idlClass);
2354                 if( !table ) {
2355                         jsonIteratorFree( search_itr );
2356                         buffer_free( join_buf );
2357                         if( freeable_hash )
2358                                 jsonObjectFree( freeable_hash );
2359                         return NULL;
2360                 }
2361
2362                 buffer_fadd(join_buf, " %s AS \"%s\" ON ( \"%s\".%s = \"%s\".%s",
2363                                         table, class, class, field, leftclass, fkey);
2364                 free(table);
2365
2366                 const jsonObject* filter = jsonObjectGetKeyConst( snode, "filter" );
2367                 if (filter) {
2368                         const char* filter_op = jsonObjectGetString( jsonObjectGetKeyConst( snode, "filter_op" ) );
2369                         if ( filter_op && !strcasecmp("or",filter_op) ) {
2370                                 buffer_add( join_buf, " OR " );
2371                         } else {
2372                                 buffer_add( join_buf, " AND " );
2373                         }
2374
2375                         char* jpred = searchWHERE( filter, idlClass, AND_OP_JOIN, NULL );
2376                         if( jpred ) {
2377                                 OSRF_BUFFER_ADD_CHAR( join_buf, ' ' );
2378                                 OSRF_BUFFER_ADD( join_buf, jpred );
2379                                 free(jpred);
2380                         } else {
2381                                 osrfLogError(
2382                                         OSRF_LOG_MARK,
2383                                         "%s: JOIN failed.  Invalid conditional expression.",
2384                                         MODULENAME
2385                                 );
2386                                 jsonIteratorFree( search_itr );
2387                                 buffer_free( join_buf );
2388                                 if( freeable_hash )
2389                                         jsonObjectFree( freeable_hash );
2390                                 return NULL;
2391                         }
2392                 }
2393
2394                 buffer_add(join_buf, " ) ");
2395
2396                 const jsonObject* join_filter = jsonObjectGetKeyConst( snode, "join" );
2397                 if (join_filter) {
2398                         char* jpred = searchJOIN( join_filter, idlClass );
2399                         OSRF_BUFFER_ADD_CHAR( join_buf, ' ' );
2400                         OSRF_BUFFER_ADD( join_buf, jpred );
2401                         free(jpred);
2402                 }
2403         }
2404
2405         if(freeable_hash)
2406                 jsonObjectFree(freeable_hash);
2407         jsonIteratorFree(search_itr);
2408
2409         return buffer_release(join_buf);
2410 }
2411
2412 /*
2413
2414 { +class : { -or|-and : { field : { op : value }, ... } ... }, ... }
2415 { +class : { -or|-and : [ { field : { op : value }, ... }, ...] ... }, ... }
2416 [ { +class : { -or|-and : [ { field : { op : value }, ... }, ...] ... }, ... }, ... ]
2417
2418 Generate code to express a set of conditions, as for a WHERE clause.  Parameters:
2419
2420 search_hash is the JSON expression of the conditions.
2421 meta is the class definition from the IDL, for the relevant table.
2422 opjoin_type indicates whether multiple conditions, if present, should be
2423         connected by AND or OR.
2424 osrfMethodContext is loaded with all sorts of stuff, but all we do with it here is
2425         to pass it to other functions -- and all they do with it is to use the session
2426         and request members to send error messages back to the client.
2427
2428 */
2429
2430 static char* searchWHERE ( const jsonObject* search_hash, osrfHash* meta, int opjoin_type, osrfMethodContext* ctx ) {
2431
2432         osrfLogDebug(
2433         OSRF_LOG_MARK,
2434         "%s: Entering searchWHERE; search_hash addr = %p, meta addr = %p, opjoin_type = %d, ctx addr = %p",
2435         MODULENAME,
2436         search_hash,
2437         meta,
2438         opjoin_type,
2439         ctx
2440     );
2441
2442         growing_buffer* sql_buf = buffer_init(128);
2443
2444         jsonObject* node = NULL;
2445
2446         int first = 1;
2447         if ( search_hash->type == JSON_ARRAY ) {
2448                 osrfLogDebug(OSRF_LOG_MARK, "%s: In WHERE clause, condition type is JSON_ARRAY", MODULENAME);
2449                 jsonIterator* search_itr = jsonNewIterator( search_hash );
2450                 if( !jsonIteratorHasNext( search_itr ) ) {
2451                         osrfLogError(
2452                                 OSRF_LOG_MARK,
2453                                 "%s: Invalid predicate structure: empty JSON array",
2454                                 MODULENAME
2455                         );
2456                         jsonIteratorFree( search_itr );
2457                         buffer_free( sql_buf );
2458                         return NULL;
2459                 }
2460
2461                 while ( (node = jsonIteratorNext( search_itr )) ) {
2462             if (first) {
2463                 first = 0;
2464             } else {
2465                 if (opjoin_type == OR_OP_JOIN) buffer_add(sql_buf, " OR ");
2466                 else buffer_add(sql_buf, " AND ");
2467             }
2468
2469             char* subpred = searchWHERE( node, meta, opjoin_type, ctx );
2470                         if( subpred ) {
2471                 buffer_fadd(sql_buf, "( %s )", subpred);
2472                 free(subpred);
2473                         } else {
2474                                 jsonIteratorFree( search_itr );
2475                                 buffer_free( sql_buf );
2476                                 return NULL;
2477                         }
2478         }
2479         jsonIteratorFree(search_itr);
2480
2481         } else if ( search_hash->type == JSON_HASH ) {
2482                 osrfLogDebug(OSRF_LOG_MARK, "%s: In WHERE clause, condition type is JSON_HASH", MODULENAME);
2483                 jsonIterator* search_itr = jsonNewIterator( search_hash );
2484                 if( !jsonIteratorHasNext( search_itr ) ) {
2485                         osrfLogError(
2486                                 OSRF_LOG_MARK,
2487                                 "%s: Invalid predicate structure: empty JSON object",
2488                                 MODULENAME
2489                         );
2490                         jsonIteratorFree( search_itr );
2491                         buffer_free( sql_buf );
2492                         return NULL;
2493                 }
2494
2495                 while ( (node = jsonIteratorNext( search_itr )) ) {
2496
2497             if (first) {
2498                 first = 0;
2499             } else {
2500                 if (opjoin_type == OR_OP_JOIN) buffer_add(sql_buf, " OR ");
2501                 else buffer_add(sql_buf, " AND ");
2502             }
2503
2504                         if ( '+' == search_itr->key[ 0 ] ) {
2505                                 if ( node->type == JSON_STRING ) {
2506                                         // Intended purpose; to allow reference to a Boolean column
2507
2508                                         // Verify that the class alias is not empty
2509                                         if( '\0' == search_itr->key[ 1 ] ) {
2510                                                 osrfLogError(
2511                                                         OSRF_LOG_MARK,
2512                                                         "%s: Table alias is empty",
2513                                                         MODULENAME
2514                                                 );
2515                                                 jsonIteratorFree( search_itr );
2516                                                 buffer_free( sql_buf );
2517                                                 return NULL;
2518                                         }
2519
2520                                         // Verify that the string looks like an identifier.
2521                                         const char* subpred = jsonObjectGetString( node );
2522                                         if( ! is_identifier( subpred ) ) {
2523                                                 osrfLogError(
2524                                                          OSRF_LOG_MARK,
2525                                                         "%s: Invalid boolean identifier in WHERE clause: \"%s\"",
2526                                                         MODULENAME,
2527                                                         subpred
2528                                                 );
2529                                                 jsonIteratorFree( search_itr );
2530                                                 buffer_free( sql_buf );
2531                                                 return NULL;
2532                                         }
2533
2534                                         buffer_fadd(sql_buf, " \"%s\".%s ", search_itr->key + 1, subpred);
2535                                 } else {
2536                                         char* subpred = searchWHERE( node, osrfHashGet( oilsIDL(), search_itr->key + 1 ), AND_OP_JOIN, ctx );
2537                                         if( subpred ) {
2538                                                 buffer_fadd(sql_buf, "( %s )", subpred);
2539                                                 free(subpred);
2540                                         } else {
2541                                                 jsonIteratorFree( search_itr );
2542                                                 buffer_free( sql_buf );
2543                                                 return NULL;
2544                                         }
2545                                 }
2546                         } else if ( !strcasecmp("-or",search_itr->key) ) {
2547                                 char* subpred = searchWHERE( node, meta, OR_OP_JOIN, ctx );
2548                                 if( subpred ) {
2549                                         buffer_fadd(sql_buf, "( %s )", subpred);
2550                                         free( subpred );
2551                                 } else {
2552                                         buffer_free( sql_buf );
2553                                         return NULL;
2554                                 }
2555                         } else if ( !strcasecmp("-and",search_itr->key) ) {
2556                                 char* subpred = searchWHERE( node, meta, AND_OP_JOIN, ctx );
2557                                 if( subpred ) {
2558                                         buffer_fadd(sql_buf, "( %s )", subpred);
2559                                         free( subpred );
2560                                 } else {
2561                                         buffer_free( sql_buf );
2562                                         return NULL;
2563                                 }
2564                         } else if ( !strcasecmp("-not",search_itr->key) ) {
2565                                 char* subpred = searchWHERE( node, meta, AND_OP_JOIN, ctx );
2566                                 if( subpred ) {
2567                                         buffer_fadd(sql_buf, " NOT ( %s )", subpred);
2568                                         free( subpred );
2569                                 } else {
2570                                         buffer_free( sql_buf );
2571                                         return NULL;
2572                                 }
2573                         } else if ( !strcasecmp("-exists",search_itr->key) ) {
2574                 char* subpred = SELECT(
2575                     ctx,
2576                     jsonObjectGetKey( node, "select" ),
2577                     jsonObjectGetKey( node, "from" ),
2578                     jsonObjectGetKey( node, "where" ),
2579                     jsonObjectGetKey( node, "having" ),
2580                     jsonObjectGetKey( node, "order_by" ),
2581                     jsonObjectGetKey( node, "limit" ),
2582                     jsonObjectGetKey( node, "offset" ),
2583                     SUBSELECT
2584                 );
2585
2586                                 if( subpred ) {
2587                                         buffer_fadd(sql_buf, "EXISTS ( %s )", subpred);
2588                                         free(subpred);
2589                                 } else {
2590                                         buffer_free( sql_buf );
2591                                         return NULL;
2592                                 }
2593             } else if ( !strcasecmp("-not-exists",search_itr->key) ) {
2594                 char* subpred = SELECT(
2595                     ctx,
2596                     jsonObjectGetKey( node, "select" ),
2597                     jsonObjectGetKey( node, "from" ),
2598                     jsonObjectGetKey( node, "where" ),
2599                     jsonObjectGetKey( node, "having" ),
2600                     jsonObjectGetKey( node, "order_by" ),
2601                     jsonObjectGetKey( node, "limit" ),
2602                     jsonObjectGetKey( node, "offset" ),
2603                     SUBSELECT
2604                 );
2605
2606                                 if( subpred ) {
2607                                         buffer_fadd(sql_buf, "NOT EXISTS ( %s )", subpred);
2608                                         free(subpred);
2609                                 } else {
2610                                         buffer_free( sql_buf );
2611                                         return NULL;
2612                                 }
2613
2614             } else {
2615
2616                 char* class = osrfHashGet(meta, "classname");
2617                 osrfHash* fields = osrfHashGet(meta, "fields");
2618                 osrfHash* field = osrfHashGet( fields, search_itr->key );
2619
2620
2621                 if (!field) {
2622                     char* table = getSourceDefinition(meta);
2623                                         if( !table )
2624                                                 table = strdup( "(?)" );
2625                     osrfLogError(
2626                         OSRF_LOG_MARK,
2627                         "%s: Attempt to reference non-existent column \"%s\" on %s (%s)",
2628                         MODULENAME,
2629                         search_itr->key,
2630                         table,
2631                         class ? class : "?"
2632                     );
2633                     buffer_free(sql_buf);
2634                     free(table);
2635                                         jsonIteratorFree(search_itr);
2636                                         return NULL;
2637                                 }
2638
2639                                 char* subpred = searchPredicate( class, field, node, ctx );
2640                                 if( subpred ) {
2641                                         buffer_add( sql_buf, subpred );
2642                                         free(subpred);
2643                                 } else {
2644                                         buffer_free(sql_buf);
2645                                         jsonIteratorFree(search_itr);
2646                                         return NULL;
2647                                 }
2648                         }
2649                 }
2650                 jsonIteratorFree(search_itr);
2651
2652     } else {
2653         // ERROR ... only hash and array allowed at this level
2654         char* predicate_string = jsonObjectToJSON( search_hash );
2655         osrfLogError(
2656             OSRF_LOG_MARK,
2657             "%s: Invalid predicate structure: %s",
2658             MODULENAME,
2659             predicate_string
2660         );
2661         buffer_free(sql_buf);
2662         free(predicate_string);
2663         return NULL;
2664     }
2665
2666         return buffer_release(sql_buf);
2667 }
2668
2669 char* SELECT (
2670                 /* method context */ osrfMethodContext* ctx,
2671
2672                 /* SELECT   */ jsonObject* selhash,
2673                 /* FROM     */ jsonObject* join_hash,
2674                 /* WHERE    */ jsonObject* search_hash,
2675                 /* HAVING   */ jsonObject* having_hash,
2676                 /* ORDER BY */ jsonObject* order_hash,
2677                 /* LIMIT    */ jsonObject* limit,
2678                 /* OFFSET   */ jsonObject* offset,
2679                 /* flags    */ int flags
2680 ) {
2681         const char* locale = osrf_message_get_last_locale();
2682
2683         // in case we don't get a select list
2684         jsonObject* defaultselhash = NULL;
2685
2686         // general tmp objects
2687         const jsonObject* tmp_const;
2688         jsonObject* selclass = NULL;
2689         jsonObject* selfield = NULL;
2690         jsonObject* snode = NULL;
2691         jsonObject* onode = NULL;
2692
2693         char* string = NULL;
2694         int from_function = 0;
2695         int first = 1;
2696         int gfirst = 1;
2697         //int hfirst = 1;
2698
2699         // the core search class
2700         char* core_class = NULL;
2701
2702         // metadata about the core search class
2703         osrfHash* core_meta = NULL;
2704
2705         osrfLogDebug(OSRF_LOG_MARK, "cstore SELECT locale: %s", locale);
2706
2707         // punt if there's no core class
2708         if (!join_hash || ( join_hash->type == JSON_HASH && !join_hash->size )) {
2709                 osrfLogError(
2710                         OSRF_LOG_MARK,
2711                         "%s: FROM clause is missing or empty",
2712                         MODULENAME
2713                 );
2714                 if( ctx )
2715                         osrfAppSessionStatus(
2716                                 ctx->session,
2717                                 OSRF_STATUS_INTERNALSERVERERROR,
2718                                 "osrfMethodException",
2719                                 ctx->request,
2720                                 "FROM clause is missing or empty in JSON query"
2721                         );
2722                 return NULL;
2723         }
2724
2725         // get the core class -- the only key of the top level FROM clause, or a string
2726         if (join_hash->type == JSON_HASH) {
2727                 jsonIterator* tmp_itr = jsonNewIterator( join_hash );
2728                 snode = jsonIteratorNext( tmp_itr );
2729
2730                 core_class = strdup( tmp_itr->key );
2731                 join_hash = snode;
2732
2733                 jsonObject* extra = jsonIteratorNext( tmp_itr );
2734
2735                 jsonIteratorFree( tmp_itr );
2736                 snode = NULL;
2737
2738                 // There shouldn't be more than one entry in join_hash
2739                 if( extra ) {
2740                         osrfLogError(
2741                                 OSRF_LOG_MARK,
2742                                 "%s: Malformed FROM clause: extra entry in JSON_HASH",
2743                                 MODULENAME
2744                         );
2745                         if( ctx )
2746                                 osrfAppSessionStatus(
2747                                         ctx->session,
2748                                         OSRF_STATUS_INTERNALSERVERERROR,
2749                                         "osrfMethodException",
2750                                         ctx->request,
2751                                         "Malformed FROM clause in JSON query"
2752                                 );
2753                         free( core_class );
2754                         return NULL;    // Malformed join_hash; extra entry
2755                 }
2756         } else if (join_hash->type == JSON_ARRAY) {
2757                 from_function = 1;
2758                 core_class = jsonObjectToSimpleString( jsonObjectGetIndex(join_hash, 0) );
2759                 selhash = NULL;
2760
2761         } else if (join_hash->type == JSON_STRING) {
2762                 core_class = jsonObjectToSimpleString( join_hash );
2763                 join_hash = NULL;
2764         }
2765         else {
2766                 osrfLogError(
2767                         OSRF_LOG_MARK,
2768                         "%s: FROM clause is unexpected JSON type: %s",
2769                         MODULENAME,
2770                         json_type( join_hash->type )
2771                 );
2772                 if( ctx )
2773                         osrfAppSessionStatus(
2774                                 ctx->session,
2775                                 OSRF_STATUS_INTERNALSERVERERROR,
2776                                 "osrfMethodException",
2777                                 ctx->request,
2778                                 "Ill-formed FROM clause in JSON query"
2779                         );
2780                 free( core_class );
2781                 return NULL;
2782         }
2783
2784         if (!from_function) {
2785                 // Get the IDL class definition for the core class
2786                 core_meta = osrfHashGet( oilsIDL(), core_class );
2787                 if( !core_meta ) {    // Didn't find it?
2788                         osrfLogError(
2789                                 OSRF_LOG_MARK,
2790                                 "%s: SELECT clause references undefined class: \"%s\"",
2791                                 MODULENAME,
2792                                 core_class
2793                         );
2794                         if( ctx )
2795                                 osrfAppSessionStatus(
2796                                         ctx->session,
2797                                         OSRF_STATUS_INTERNALSERVERERROR,
2798                                         "osrfMethodException",
2799                                         ctx->request,
2800                                         "SELECT clause references undefined class in JSON query"
2801                                 );
2802                         free( core_class );
2803                         return NULL;
2804                 }
2805
2806                 // Make sure the class isn't virtual
2807                 if( str_is_true( osrfHashGet( core_meta, "virtual" ) ) ) {
2808                         osrfLogError(
2809                                 OSRF_LOG_MARK,
2810                                 "%s: Core class is virtual: \"%s\"",
2811                                 MODULENAME,
2812                                 core_class
2813                         );
2814                         if( ctx )
2815                                 osrfAppSessionStatus(
2816                                         ctx->session,
2817                                         OSRF_STATUS_INTERNALSERVERERROR,
2818                                         "osrfMethodException",
2819                                         ctx->request,
2820                                         "FROM clause references virtual class in JSON query"
2821                                 );
2822                         free( core_class );
2823                         return NULL;
2824                 }
2825         }
2826
2827         // if the select list is empty, or the core class field list is '*',
2828         // build the default select list ...
2829         if (!selhash) {
2830                 selhash = defaultselhash = jsonNewObjectType(JSON_HASH);
2831                 jsonObjectSetKey( selhash, core_class, jsonNewObjectType(JSON_ARRAY) );
2832         } else if( selhash->type != JSON_HASH ) {
2833                 osrfLogError(
2834                         OSRF_LOG_MARK,
2835                         "%s: Expected JSON_HASH for SELECT clause; found %s",
2836                         MODULENAME,
2837                         json_type( selhash->type )
2838                 );
2839
2840                 if (ctx)
2841                         osrfAppSessionStatus(
2842                                 ctx->session,
2843                                 OSRF_STATUS_INTERNALSERVERERROR,
2844                                 "osrfMethodException",
2845                                 ctx->request,
2846                                 "Malformed SELECT clause in JSON query"
2847                         );
2848                 free( core_class );
2849                 return NULL;
2850         } else if ( (tmp_const = jsonObjectGetKeyConst( selhash, core_class )) && tmp_const->type == JSON_STRING ) {
2851                 const char* _x = jsonObjectGetString( tmp_const );
2852                 if (!strncmp( "*", _x, 1 )) {
2853                         jsonObjectRemoveKey( selhash, core_class );
2854                         jsonObjectSetKey( selhash, core_class, jsonNewObjectType(JSON_ARRAY) );
2855                 }
2856         }
2857
2858         // the query buffer
2859         growing_buffer* sql_buf = buffer_init(128);
2860
2861         // temp buffer for the SELECT list
2862         growing_buffer* select_buf = buffer_init(128);
2863         growing_buffer* order_buf = buffer_init(128);
2864         growing_buffer* group_buf = buffer_init(128);
2865         growing_buffer* having_buf = buffer_init(128);
2866
2867         int aggregate_found = 0;     // boolean
2868
2869         // Build a select list
2870         if(from_function)   // From a function we select everything
2871                 OSRF_BUFFER_ADD_CHAR( select_buf, '*' );
2872         else {
2873
2874                 // If we need to build a default list, prepare to do so
2875                 jsonObject* _tmp = jsonObjectGetKey( selhash, core_class );
2876                 if ( _tmp && !_tmp->size ) {
2877
2878                         osrfHash* core_fields = osrfHashGet( core_meta, "fields" );
2879
2880                         osrfHashIterator* field_itr = osrfNewHashIterator( core_fields );
2881                         osrfHash* field_def;
2882                         while( ( field_def = osrfHashIteratorNext( field_itr ) ) ) {
2883                                 if( ! str_is_true( osrfHashGet( field_def, "virtual" ) ) ) {
2884                                         // This field is not virtual, so add it to the list
2885                                         jsonObjectPush( _tmp, jsonNewObject( osrfHashIteratorKey( field_itr ) ) );
2886                                 }
2887                         }
2888                         osrfHashIteratorFree( field_itr );
2889                 }
2890
2891                 // Now build the actual select list
2892             int sel_pos = 1;
2893             first = 1;
2894             gfirst = 1;
2895             jsonIterator* selclass_itr = jsonNewIterator( selhash );
2896             while ( (selclass = jsonIteratorNext( selclass_itr )) ) {    // For each class
2897
2898                     // Make sure the class is defined in the IDL
2899                         const char* cname = selclass_itr->key;
2900                         osrfHash* idlClass = osrfHashGet( oilsIDL(), cname );
2901                     if (!idlClass) {
2902                                 osrfLogError(
2903                                         OSRF_LOG_MARK,
2904                                         "%s: Selected class \"%s\" not defined in IDL",
2905                                         MODULENAME,
2906                                         cname
2907                                 );
2908
2909                                 if (ctx)
2910                                         osrfAppSessionStatus(
2911                                                 ctx->session,
2912                                                 OSRF_STATUS_INTERNALSERVERERROR,
2913                                                 "osrfMethodException",
2914                                                 ctx->request,
2915                                                 "Selected class is not defined"
2916                                         );
2917                                 jsonIteratorFree( selclass_itr );
2918                                 buffer_free( sql_buf );
2919                                 buffer_free( select_buf );
2920                                 buffer_free( order_buf );
2921                                 buffer_free( group_buf );
2922                                 buffer_free( having_buf );
2923                                 if( defaultselhash ) jsonObjectFree( defaultselhash );
2924                                 free( core_class );
2925                                 return NULL;
2926                         }
2927
2928                     // Make sure the target relation is in the join tree.
2929
2930                         // At this point join_hash is a step down from the join_hash we
2931                         // received as a parameter.  If the original was a JSON_STRING,
2932                         // then json_hash is now NULL.  If the original was a JSON_HASH,
2933                         // then json_hash is now the first (and only) entry in it,
2934                         // denoting the core class.  We've already excluded the
2935                         // possibility that the original was a JSON_ARRAY, because in
2936                         // that case from_function would be non-NULL, and we wouldn't
2937                         // be here.
2938
2939                         int class_in_from_clause;    // boolean
2940
2941                     if ( ! strcmp( core_class, cname ))
2942                                 // This is the core class -- no problem
2943                                 class_in_from_clause = 1;
2944                         else {
2945                                 if (!join_hash)
2946                                         // There's only one class in the FROM clause, and this isn't it
2947                                         class_in_from_clause = 0;
2948                                 else if (join_hash->type == JSON_STRING) {
2949                                         // There's only one class in the FROM clause
2950                                         const char* str = jsonObjectGetString(join_hash);
2951                                         if ( strcmp( str, cname ) )
2952                                                 class_in_from_clause = 0;    // This isn't it
2953                                         else
2954                                                 class_in_from_clause = 1;    // This is it
2955                                 } else {
2956                                         jsonObject* found = jsonObjectFindPath(join_hash, "//%s", cname);
2957                                         if ( 0 == found->size )
2958                                                 class_in_from_clause = 0;   // Nowhere in the join tree
2959                                         else
2960                                                 class_in_from_clause = 1;   // Found it
2961                                         jsonObjectFree( found );
2962                                 }
2963                         }
2964
2965                         // If the class isn't in the FROM clause, bail out
2966                         if( ! class_in_from_clause ) {
2967                                 osrfLogError(
2968                                         OSRF_LOG_MARK,
2969                                         "%s: SELECT clause references class not in FROM clause: \"%s\"",
2970                                         MODULENAME,
2971                                         cname
2972                                 );
2973                                 if( ctx )
2974                                         osrfAppSessionStatus(
2975                                                 ctx->session,
2976                                                 OSRF_STATUS_INTERNALSERVERERROR,
2977                                                 "osrfMethodException",
2978                                                 ctx->request,
2979                                                 "Selected class not in FROM clause in JSON query"
2980                                         );
2981                                 jsonIteratorFree( selclass_itr );
2982                                 buffer_free( sql_buf );
2983                                 buffer_free( select_buf );
2984                                 buffer_free( order_buf );
2985                                 buffer_free( group_buf );
2986                                 buffer_free( having_buf );
2987                                 if( defaultselhash ) jsonObjectFree( defaultselhash );
2988                                 free( core_class );
2989                                 return NULL;
2990                         }
2991
2992                         // Look up some attributes of the current class, so that we
2993                         // don't have to look them up again for each field
2994                         osrfHash* class_field_set = osrfHashGet( idlClass, "fields" );
2995                         const char* class_pkey = osrfHashGet( idlClass, "primarykey" );
2996                         const char* class_tname = osrfHashGet( idlClass, "tablename" );
2997
2998                     // stitch together the column list ...
2999                     jsonIterator* select_itr = jsonNewIterator( selclass );
3000                     while ( (selfield = jsonIteratorNext( select_itr )) ) {   // for each SELECT column
3001
3002                                 // If we need a separator comma, add one
3003                                 if (first) {
3004                                         first = 0;
3005                                 } else {
3006                                         OSRF_BUFFER_ADD_CHAR( select_buf, ',' );
3007                                 }
3008
3009                                 // ... if it's a string, just toss it on the pile
3010                                 if (selfield->type == JSON_STRING) {
3011
3012                                         // Look up the field in the IDL
3013                                         const char* col_name = jsonObjectGetString( selfield );
3014                                         osrfHash* field_def = osrfHashGet( class_field_set, col_name );
3015                                         if ( !field_def ) {
3016                                                 // No such field in current class
3017                                                 osrfLogError(
3018                                                         OSRF_LOG_MARK,
3019                                                         "%s: Selected column \"%s\" not defined in IDL for class \"%s\"",
3020                                                         MODULENAME,
3021                                                         col_name,
3022                                                         cname
3023                                                 );
3024                                                 if( ctx )
3025                                                         osrfAppSessionStatus(
3026                                                                 ctx->session,
3027                                                                 OSRF_STATUS_INTERNALSERVERERROR,
3028                                                                 "osrfMethodException",
3029                                                                 ctx->request,
3030                                                                 "Selected column not defined in JSON query"
3031                                                         );
3032                                                 jsonIteratorFree( select_itr );
3033                                                 jsonIteratorFree( selclass_itr );
3034                                                 buffer_free( sql_buf );
3035                                                 buffer_free( select_buf );
3036                                                 buffer_free( order_buf );
3037                                                 buffer_free( group_buf );
3038                                                 buffer_free( having_buf );
3039                                                 if( defaultselhash ) jsonObjectFree( defaultselhash );
3040                                                 free( core_class );
3041                                                 return NULL;
3042                                         } else if ( str_is_true( osrfHashGet( field_def, "virtual" ) ) ) {
3043                                                 // Virtual field not allowed
3044                                                 osrfLogError(
3045                                                         OSRF_LOG_MARK,
3046                                                         "%s: Selected column \"%s\" for class \"%s\" is virtual",
3047                                                         MODULENAME,
3048                                                         col_name,
3049                                                         cname
3050                                                 );
3051                                                 if( ctx )
3052                                                         osrfAppSessionStatus(
3053                                                                 ctx->session,
3054                                                                 OSRF_STATUS_INTERNALSERVERERROR,
3055                                                                 "osrfMethodException",
3056                                                                 ctx->request,
3057                                                                 "Selected column may not be virtual in JSON query"
3058                                                         );
3059                                                 jsonIteratorFree( select_itr );
3060                                                 jsonIteratorFree( selclass_itr );
3061                                                 buffer_free( sql_buf );
3062                                                 buffer_free( select_buf );
3063                                                 buffer_free( order_buf );
3064                                                 buffer_free( group_buf );
3065                                                 buffer_free( having_buf );
3066                                                 if( defaultselhash ) jsonObjectFree( defaultselhash );
3067                                                 free( core_class );
3068                                                 return NULL;
3069                                         }
3070
3071                                         if (locale) {
3072                                                 const char* i18n;
3073                                                 if (flags & DISABLE_I18N)
3074                                                         i18n = NULL;
3075                                                 else
3076                                                         i18n = osrfHashGet(field_def, "i18n");
3077
3078                                                 if( str_is_true( i18n ) ) {
3079                             buffer_fadd( select_buf,
3080                                                                 " oils_i18n_xlate('%s', '%s', '%s', '%s', \"%s\".%s::TEXT, '%s') AS \"%s\"",
3081                                                                 class_tname, cname, col_name, class_pkey, cname, class_pkey, locale, col_name );
3082                         } else {
3083                                             buffer_fadd(select_buf, " \"%s\".%s AS \"%s\"", cname, col_name, col_name );
3084                         }
3085                     } else {
3086                                         buffer_fadd(select_buf, " \"%s\".%s AS \"%s\"", cname, col_name, col_name );
3087                     }
3088
3089                                 // ... but it could be an object, in which case we check for a Field Transform
3090                                 } else if (selfield->type == JSON_HASH) {
3091
3092                                         const char* col_name = jsonObjectGetString( jsonObjectGetKeyConst( selfield, "column" ) );
3093
3094                                         // Get the field definition from the IDL
3095                                         osrfHash* field_def = osrfHashGet( class_field_set, col_name );
3096                                         if ( !field_def ) {
3097                                                 // No such field in current class
3098                                                 osrfLogError(
3099                                                         OSRF_LOG_MARK,
3100                                                         "%s: Selected column \"%s\" is not defined in IDL for class \"%s\"",
3101                                                         MODULENAME,
3102                                                         col_name,
3103                                                         cname
3104                                                 );
3105                                                 if( ctx )
3106                                                         osrfAppSessionStatus(
3107                                                                 ctx->session,
3108                                                                 OSRF_STATUS_INTERNALSERVERERROR,
3109                                                                 "osrfMethodException",
3110                                                                 ctx->request,
3111                                                                 "Selected column is not defined in JSON query"
3112                                                         );
3113                                                 jsonIteratorFree( select_itr );
3114                                                 jsonIteratorFree( selclass_itr );
3115                                                 buffer_free( sql_buf );
3116                                                 buffer_free( select_buf );
3117                                                 buffer_free( order_buf );
3118                                                 buffer_free( group_buf );
3119                                                 buffer_free( having_buf );
3120                                                 if( defaultselhash ) jsonObjectFree( defaultselhash );
3121                                                 free( core_class );
3122                                                 return NULL;
3123                                         } else if ( str_is_true( osrfHashGet( field_def, "virtual" ) ) ) {
3124                                                 // No such field in current class
3125                                                 osrfLogError(
3126                                                         OSRF_LOG_MARK,
3127                                                         "%s: Selected column \"%s\" is virtual for class \"%s\"",
3128                                                         MODULENAME,
3129                                                         col_name,
3130                                                         cname
3131                                                 );
3132                                                 if( ctx )
3133                                                         osrfAppSessionStatus(
3134                                                                 ctx->session,
3135                                                                 OSRF_STATUS_INTERNALSERVERERROR,
3136                                                                 "osrfMethodException",
3137                                                                 ctx->request,
3138                                                                 "Selected column is virtual in JSON query"
3139                                                         );
3140                                                 jsonIteratorFree( select_itr );
3141                                                 jsonIteratorFree( selclass_itr );
3142                                                 buffer_free( sql_buf );
3143                                                 buffer_free( select_buf );
3144                                                 buffer_free( order_buf );
3145                                                 buffer_free( group_buf );
3146                                                 buffer_free( having_buf );
3147                                                 if( defaultselhash ) jsonObjectFree( defaultselhash );
3148                                                 free( core_class );
3149                                                 return NULL;
3150                                         }
3151
3152                                         // Decide what to use as a column alias
3153                                         const char* _alias;
3154                                         if ((tmp_const = jsonObjectGetKeyConst( selfield, "alias" ))) {
3155                                                 _alias = jsonObjectGetString( tmp_const );
3156                                         } else {         // Use field name as the alias
3157                                                 _alias = col_name;
3158                                         }
3159
3160                                         if (jsonObjectGetKeyConst( selfield, "transform" )) {
3161                                                 char* transform_str = searchFieldTransform(cname, field_def, selfield);
3162                                                 if( transform_str ) {
3163                                                         buffer_fadd(select_buf, " %s AS \"%s\"", transform_str, _alias);
3164                                                         free(transform_str);
3165                                                 } else {
3166                                                         if( ctx )
3167                                                                 osrfAppSessionStatus(
3168                                                                         ctx->session,
3169                                                                         OSRF_STATUS_INTERNALSERVERERROR,
3170                                                                         "osrfMethodException",
3171                                                                         ctx->request,
3172                                                                         "Unable to generate transform function in JSON query"
3173                                                                 );
3174                                                         jsonIteratorFree( select_itr );
3175                                                         jsonIteratorFree( selclass_itr );
3176                                                         buffer_free( sql_buf );
3177                                                         buffer_free( select_buf );
3178                                                         buffer_free( order_buf );
3179                                                         buffer_free( group_buf );
3180                                                         buffer_free( having_buf );
3181                                                         if( defaultselhash ) jsonObjectFree( defaultselhash );
3182                                                         free( core_class );
3183                                                         return NULL;
3184                                                 }
3185                                         } else {
3186
3187                                                 if (locale) {
3188                                                         const char* i18n;
3189                                                         if (flags & DISABLE_I18N)
3190                                                                 i18n = NULL;
3191                                                         else
3192                                                                 i18n = osrfHashGet(field_def, "i18n");
3193
3194                                                         if( str_is_true( i18n ) ) {
3195                                                                 buffer_fadd( select_buf,
3196                                                                         " oils_i18n_xlate('%s', '%s', '%s', '%s', \"%s\".%s::TEXT, '%s') AS \"%s\"",
3197                                                                         class_tname, cname, col_name, class_pkey, cname, class_pkey, locale, _alias);
3198                                                         } else {
3199                                                                 buffer_fadd(select_buf, " \"%s\".%s AS \"%s\"", cname, col_name, _alias);
3200                                                         }
3201                                                 } else {
3202                                                         buffer_fadd(select_buf, " \"%s\".%s AS \"%s\"", cname, col_name, _alias);
3203                                                 }
3204                                         }
3205                                 }
3206                                 else {
3207                                         osrfLogError(
3208                                                 OSRF_LOG_MARK,
3209                                                 "%s: Selected item is unexpected JSON type: %s",
3210                                                 MODULENAME,
3211                                                 json_type( selfield->type )
3212                                         );
3213                                         if( ctx )
3214                                                 osrfAppSessionStatus(
3215                                                         ctx->session,
3216                                                         OSRF_STATUS_INTERNALSERVERERROR,
3217                                                         "osrfMethodException",
3218                                                         ctx->request,
3219                                                         "Ill-formed SELECT item in JSON query"
3220                                                 );
3221                                         jsonIteratorFree( select_itr );
3222                                         jsonIteratorFree( selclass_itr );
3223                                         buffer_free( sql_buf );
3224                                         buffer_free( select_buf );
3225                                         buffer_free( order_buf );
3226                                         buffer_free( group_buf );
3227                                         buffer_free( having_buf );
3228                                         if( defaultselhash ) jsonObjectFree( defaultselhash );
3229                                         free( core_class );
3230                                         return NULL;
3231                                 }
3232
3233                                 const jsonObject* agg_obj = jsonObjectGetKey( selfield, "aggregate" );
3234                                 if( obj_is_true( agg_obj ) )
3235                                         aggregate_found = 1;
3236                                 else {
3237                                         // Append a comma (except for the first one)
3238                                         // and add the column to a GROUP BY clause
3239                                         if (gfirst)
3240                                                 gfirst = 0;
3241                                         else
3242                                                 OSRF_BUFFER_ADD_CHAR( group_buf, ',' );
3243
3244                                         buffer_fadd(group_buf, " %d", sel_pos);
3245                                 }
3246
3247 #if 0
3248                             if (is_agg->size || (flags & SELECT_DISTINCT)) {
3249
3250                                         const jsonObject* aggregate_obj = jsonObjectGetKey( selfield, "aggregate" );
3251                                     if ( ! obj_is_true( aggregate_obj ) ) {
3252                                             if (gfirst) {
3253                                                     gfirst = 0;
3254                                             } else {
3255                                                         OSRF_BUFFER_ADD_CHAR( group_buf, ',' );
3256                                             }
3257
3258                                             buffer_fadd(group_buf, " %d", sel_pos);
3259
3260                                         /*
3261                                     } else if (is_agg = jsonObjectGetKey( selfield, "having" )) {
3262                                             if (gfirst) {
3263                                                     gfirst = 0;
3264                                             } else {
3265                                                         OSRF_BUFFER_ADD_CHAR( group_buf, ',' );
3266                                             }
3267
3268                                             _column = searchFieldTransform(cname, field, selfield);
3269                                                 OSRF_BUFFER_ADD_CHAR(group_buf, ' ');
3270                                                 OSRF_BUFFER_ADD(group_buf, _column);
3271                                             _column = searchFieldTransform(cname, field, selfield);
3272                                         */
3273                                     }
3274                             }
3275 #endif
3276
3277                             sel_pos++;
3278                     } // end while -- iterating across SELECT columns
3279
3280             jsonIteratorFree(select_itr);
3281             } // end while -- iterating across classes
3282
3283         jsonIteratorFree(selclass_itr);
3284     }
3285
3286
3287         char* col_list = buffer_release(select_buf);
3288         char* table = NULL;
3289         if (from_function) table = searchValueTransform(join_hash);
3290         else table = getSourceDefinition(core_meta);
3291
3292         if( !table ) {
3293                 if (ctx)
3294                         osrfAppSessionStatus(
3295                                 ctx->session,
3296                                 OSRF_STATUS_INTERNALSERVERERROR,
3297                                 "osrfMethodException",
3298                                 ctx->request,
3299                                 "Unable to identify table for core class"
3300                         );
3301                 free( col_list );
3302                 buffer_free( sql_buf );
3303                 buffer_free( order_buf );
3304                 buffer_free( group_buf );
3305                 buffer_free( having_buf );
3306                 if( defaultselhash ) jsonObjectFree( defaultselhash );
3307                 free( core_class );
3308                 return NULL;
3309         }
3310
3311         // Put it all together
3312         buffer_fadd(sql_buf, "SELECT %s FROM %s AS \"%s\" ", col_list, table, core_class );
3313         free(col_list);
3314         free(table);
3315
3316     if (!from_function) {
3317             // Now, walk the join tree and add that clause
3318             if ( join_hash ) {
3319                     char* join_clause = searchJOIN( join_hash, core_meta );
3320                         if( join_clause ) {
3321                                 buffer_add(sql_buf, join_clause);
3322                         free(join_clause);
3323                         } else {
3324                                 if (ctx)
3325                                         osrfAppSessionStatus(
3326                                                 ctx->session,
3327                                                 OSRF_STATUS_INTERNALSERVERERROR,
3328                                                 "osrfMethodException",
3329                                                 ctx->request,
3330                                                 "Unable to construct JOIN clause(s)"
3331                                         );
3332                                 buffer_free( sql_buf );
3333                                 buffer_free( order_buf );
3334                                 buffer_free( group_buf );
3335                                 buffer_free( having_buf );
3336                                 if( defaultselhash ) jsonObjectFree( defaultselhash );
3337                                 free( core_class );
3338                                 return NULL;
3339                         }
3340             }
3341
3342                 // Build a WHERE clause, if there is one
3343             if ( search_hash ) {
3344                     buffer_add(sql_buf, " WHERE ");
3345
3346                     // and it's on the WHERE clause
3347                     char* pred = searchWHERE( search_hash, core_meta, AND_OP_JOIN, ctx );
3348
3349                     if (pred) {
3350                                 buffer_add(sql_buf, pred);
3351                                 free(pred);
3352                         } else {
3353                                 if (ctx) {
3354                                 osrfAppSessionStatus(
3355                                         ctx->session,
3356                                         OSRF_STATUS_INTERNALSERVERERROR,
3357                                         "osrfMethodException",
3358                                         ctx->request,
3359                                         "Severe query error in WHERE predicate -- see error log for more details"
3360                                 );
3361                             }
3362                             free(core_class);
3363                             buffer_free(having_buf);
3364                             buffer_free(group_buf);
3365                             buffer_free(order_buf);
3366                             buffer_free(sql_buf);
3367                             if (defaultselhash) jsonObjectFree(defaultselhash);
3368                             return NULL;
3369                     }
3370         }
3371
3372                 // Build a HAVING clause, if there is one
3373             if ( having_hash ) {
3374                     buffer_add(sql_buf, " HAVING ");
3375
3376                     // and it's on the the WHERE clause
3377                     char* pred = searchWHERE( having_hash, core_meta, AND_OP_JOIN, ctx );
3378
3379                     if (pred) {
3380                                 buffer_add(sql_buf, pred);
3381                                 free(pred);
3382                         } else {
3383                                 if (ctx) {
3384                                 osrfAppSessionStatus(
3385                                         ctx->session,
3386                                         OSRF_STATUS_INTERNALSERVERERROR,
3387                                         "osrfMethodException",
3388                                         ctx->request,
3389                                         "Severe query error in HAVING predicate -- see error log for more details"
3390                                 );
3391                             }
3392                             free(core_class);
3393                             buffer_free(having_buf);
3394                             buffer_free(group_buf);
3395                             buffer_free(order_buf);
3396                             buffer_free(sql_buf);
3397                             if (defaultselhash) jsonObjectFree(defaultselhash);
3398                             return NULL;
3399                     }
3400             }
3401
3402                 // Build an ORDER BY clause, if there is one
3403             first = 1;
3404             jsonIterator* class_itr = jsonNewIterator( order_hash );
3405             while ( (snode = jsonIteratorNext( class_itr )) ) {
3406
3407                     if (!jsonObjectGetKeyConst(selhash,class_itr->key))
3408                             continue;
3409
3410                         if ( snode->type == JSON_HASH ) {
3411
3412                                 jsonIterator* order_itr = jsonNewIterator( snode );
3413                                 while ( (onode = jsonIteratorNext( order_itr )) ) {
3414
3415                                         if (!oilsIDLFindPath( "/%s/fields/%s", class_itr->key, order_itr->key ))
3416                                                 continue;
3417
3418                                         const char* direction = NULL;
3419                                         if ( onode->type == JSON_HASH ) {
3420                                                 if ( jsonObjectGetKeyConst( onode, "transform" ) ) {
3421                                                         string = searchFieldTransform(
3422                                                                 class_itr->key,
3423                                                                 oilsIDLFindPath( "/%s/fields/%s", class_itr->key, order_itr->key ),
3424                                                                 onode
3425                                                         );
3426                                                         if( ! string ) {
3427                                                                 osrfAppSessionStatus(
3428                                                                         ctx->session,
3429                                                                         OSRF_STATUS_INTERNALSERVERERROR,
3430                                                                         "osrfMethodException",
3431                                                                         ctx->request,
3432                                                                         "Severe query error in ORDER BY clause -- see error log for more details"
3433                                                                 );
3434                                                                 jsonIteratorFree( order_itr );
3435                                                                 jsonIteratorFree( class_itr );
3436                                                                 free(core_class);
3437                                                                 buffer_free(having_buf);
3438                                                                 buffer_free(group_buf);
3439                                                                 buffer_free(order_buf);
3440                                                                 buffer_free(sql_buf);
3441                                                                 if (defaultselhash) jsonObjectFree(defaultselhash);
3442                                                                 return NULL;
3443                                                         }
3444                                                 } else {
3445                                                         growing_buffer* field_buf = buffer_init(16);
3446                                                         buffer_fadd(field_buf, "\"%s\".%s", class_itr->key, order_itr->key);
3447                                                         string = buffer_release(field_buf);
3448                                                 }
3449
3450                                                 if ( (tmp_const = jsonObjectGetKeyConst( onode, "direction" )) ) {
3451                                                         const char* dir = jsonObjectGetString(tmp_const);
3452                                                         if (!strncasecmp(dir, "d", 1)) {
3453                                                                 direction = " DESC";
3454                                                         } else {
3455                                                                 direction = " ASC";
3456                                                         }
3457                                                 }
3458
3459                                         } else {
3460                                                 string = strdup(order_itr->key);
3461                                                 const char* dir = jsonObjectGetString(onode);
3462                                                 if (!strncasecmp(dir, "d", 1)) {
3463                                                         direction = " DESC";
3464                                                 } else {
3465                                                         direction = " ASC";
3466                                                 }
3467                                         }
3468
3469                                     if (first) {
3470                                             first = 0;
3471                                     } else {
3472                                             buffer_add(order_buf, ", ");
3473                                     }
3474
3475                                     buffer_add(order_buf, string);
3476                                     free(string);
3477
3478                                     if (direction) {
3479                                             buffer_add(order_buf, direction);
3480                                     }
3481
3482                             } // end while
3483                 // jsonIteratorFree(order_itr);
3484
3485                     } else if ( snode->type == JSON_ARRAY ) {
3486
3487                         jsonIterator* order_itr = jsonNewIterator( snode );
3488                             while ( (onode = jsonIteratorNext( order_itr )) ) {
3489
3490                                         const char* _f = jsonObjectGetString( onode );
3491
3492                                         if (!oilsIDLFindPath( "/%s/fields/%s", class_itr->key, _f))
3493                                                 continue;
3494
3495                                         if (first) {
3496                                                 first = 0;
3497                                         } else {
3498                                                 buffer_add(order_buf, ", ");
3499                                         }
3500
3501                                         buffer_add(order_buf, _f);
3502
3503                                 } // end while
3504                 // jsonIteratorFree(order_itr);
3505
3506
3507                     // IT'S THE OOOOOOOOOOOLD STYLE!
3508                     } else {
3509                             osrfLogError(OSRF_LOG_MARK, "%s: Possible SQL injection attempt; direct order by is not allowed", MODULENAME);
3510                             if (ctx) {
3511                                 osrfAppSessionStatus(
3512                                         ctx->session,
3513                                         OSRF_STATUS_INTERNALSERVERERROR,
3514                                         "osrfMethodException",
3515                                         ctx->request,
3516                                         "Severe query error -- see error log for more details"
3517                                 );
3518                             }
3519
3520                             free(core_class);
3521                             buffer_free(having_buf);
3522                             buffer_free(group_buf);
3523                             buffer_free(order_buf);
3524                             buffer_free(sql_buf);
3525                             if (defaultselhash) jsonObjectFree(defaultselhash);
3526                             jsonIteratorFree(class_itr);
3527                             return NULL;
3528                     }
3529
3530             } // end while
3531                 // jsonIteratorFree(class_itr);
3532         }
3533
3534
3535         string = buffer_release(group_buf);
3536
3537         if ( *string && ( aggregate_found || (flags & SELECT_DISTINCT) ) ) {
3538                 OSRF_BUFFER_ADD( sql_buf, " GROUP BY " );
3539                 OSRF_BUFFER_ADD( sql_buf, string );
3540         }
3541
3542         free(string);
3543
3544         string = buffer_release(having_buf);
3545
3546         if ( *string ) {
3547                 OSRF_BUFFER_ADD( sql_buf, " HAVING " );
3548                 OSRF_BUFFER_ADD( sql_buf, string );
3549         }
3550
3551         free(string);
3552
3553         string = buffer_release(order_buf);
3554
3555         if ( *string ) {
3556                 OSRF_BUFFER_ADD( sql_buf, " ORDER BY " );
3557                 OSRF_BUFFER_ADD( sql_buf, string );
3558         }
3559
3560         free(string);
3561
3562         if ( limit ){
3563                 const char* str = jsonObjectGetString(limit);
3564                 buffer_fadd( sql_buf, " LIMIT %d", atoi(str) );
3565         }
3566
3567         if (offset) {
3568                 const char* str = jsonObjectGetString(offset);
3569                 buffer_fadd( sql_buf, " OFFSET %d", atoi(str) );
3570         }
3571
3572         if (!(flags & SUBSELECT)) OSRF_BUFFER_ADD_CHAR(sql_buf, ';');
3573
3574         free(core_class);
3575         if (defaultselhash) jsonObjectFree(defaultselhash);
3576
3577         return buffer_release(sql_buf);
3578
3579 }
3580
3581 static char* buildSELECT ( jsonObject* search_hash, jsonObject* order_hash, osrfHash* meta, osrfMethodContext* ctx ) {
3582
3583         const char* locale = osrf_message_get_last_locale();
3584
3585         osrfHash* fields = osrfHashGet(meta, "fields");
3586         char* core_class = osrfHashGet(meta, "classname");
3587
3588         const jsonObject* join_hash = jsonObjectGetKeyConst( order_hash, "join" );
3589
3590         jsonObject* node = NULL;
3591         jsonObject* snode = NULL;
3592         jsonObject* onode = NULL;
3593         const jsonObject* _tmp = NULL;
3594         jsonObject* selhash = NULL;
3595         jsonObject* defaultselhash = NULL;
3596
3597         growing_buffer* sql_buf = buffer_init(128);
3598         growing_buffer* select_buf = buffer_init(128);
3599
3600         if ( !(selhash = jsonObjectGetKey( order_hash, "select" )) ) {
3601                 defaultselhash = jsonNewObjectType(JSON_HASH);
3602                 selhash = defaultselhash;
3603         }
3604
3605         if ( !jsonObjectGetKeyConst(selhash,core_class) ) {
3606                 jsonObjectSetKey( selhash, core_class, jsonNewObjectType(JSON_ARRAY) );
3607                 jsonObject* flist = jsonObjectGetKey( selhash, core_class );
3608
3609                 int i = 0;
3610                 char* field;
3611
3612                 osrfStringArray* keys = osrfHashKeys( fields );
3613                 while ( (field = osrfStringArrayGetString(keys, i++)) ) {
3614                         if( ! str_is_true( osrfHashGet( osrfHashGet( fields, field ), "virtual" ) ) )
3615                                 jsonObjectPush( flist, jsonNewObject( field ) );
3616                 }
3617                 osrfStringArrayFree(keys);
3618         }
3619
3620         int first = 1;
3621         jsonIterator* class_itr = jsonNewIterator( selhash );
3622         while ( (snode = jsonIteratorNext( class_itr )) ) {
3623
3624                 char* cname = class_itr->key;
3625                 osrfHash* idlClass = osrfHashGet( oilsIDL(), cname );
3626                 if (!idlClass) continue;
3627
3628                 if (strcmp(core_class,class_itr->key)) {
3629                         if (!join_hash) continue;
3630
3631                         jsonObject* found =  jsonObjectFindPath(join_hash, "//%s", class_itr->key);
3632                         if (!found->size) {
3633                                 jsonObjectFree(found);
3634                                 continue;
3635                         }
3636
3637                         jsonObjectFree(found);
3638                 }
3639
3640                 jsonIterator* select_itr = jsonNewIterator( snode );
3641                 while ( (node = jsonIteratorNext( select_itr )) ) {
3642                         const char* item_str = jsonObjectGetString( node );
3643                         osrfHash* field = osrfHashGet( osrfHashGet( idlClass, "fields" ), item_str );
3644                         char* fname = osrfHashGet(field, "name");
3645
3646                         if (!field) continue;
3647
3648                         if (first) {
3649                                 first = 0;
3650                         } else {
3651                                 OSRF_BUFFER_ADD_CHAR(select_buf, ',');
3652                         }
3653
3654             if (locale) {
3655                         const char* i18n;
3656                                 const jsonObject* no_i18n_obj = jsonObjectGetKey( order_hash, "no_i18n" );
3657                                 if ( obj_is_true( no_i18n_obj ) )    // Suppress internationalization?
3658                                         i18n = NULL;
3659                                 else
3660                                         i18n = osrfHashGet(field, "i18n");
3661
3662                                 if( str_is_true( i18n ) ) {
3663                         char* pkey = osrfHashGet(idlClass, "primarykey");
3664                         char* tname = osrfHashGet(idlClass, "tablename");
3665
3666                     buffer_fadd(select_buf, " oils_i18n_xlate('%s', '%s', '%s', '%s', \"%s\".%s::TEXT, '%s') AS \"%s\"", tname, cname, fname, pkey, cname, pkey, locale, fname);
3667                 } else {
3668                                 buffer_fadd(select_buf, " \"%s\".%s", cname, fname);
3669                 }
3670             } else {
3671                             buffer_fadd(select_buf, " \"%s\".%s", cname, fname);
3672             }
3673                 }
3674
3675         jsonIteratorFree(select_itr);
3676         }
3677
3678     jsonIteratorFree(class_itr);
3679
3680         char* col_list = buffer_release(select_buf);
3681         char* table = getSourceDefinition(meta);
3682         if( !table )
3683                 table = strdup( "(null)" );
3684
3685         buffer_fadd(sql_buf, "SELECT %s FROM %s AS \"%s\"", col_list, table, core_class );
3686         free(col_list);
3687         free(table);
3688
3689         if ( join_hash ) {
3690                 char* join_clause = searchJOIN( join_hash, meta );
3691                 OSRF_BUFFER_ADD_CHAR(sql_buf, ' ');
3692                 OSRF_BUFFER_ADD(sql_buf, join_clause);
3693                 free(join_clause);
3694         }
3695
3696         osrfLogDebug(OSRF_LOG_MARK, "%s pre-predicate SQL =  %s",
3697                                  MODULENAME, OSRF_BUFFER_C_STR(sql_buf));
3698
3699         buffer_add(sql_buf, " WHERE ");
3700
3701         char* pred = searchWHERE( search_hash, meta, AND_OP_JOIN, ctx );
3702         if (!pred) {
3703                 osrfAppSessionStatus(
3704                         ctx->session,
3705                         OSRF_STATUS_INTERNALSERVERERROR,
3706                                 "osrfMethodException",
3707                                 ctx->request,
3708                                 "Severe query error -- see error log for more details"
3709                         );
3710                 buffer_free(sql_buf);
3711                 if(defaultselhash) jsonObjectFree(defaultselhash);
3712                 return NULL;
3713         } else {
3714                 buffer_add(sql_buf, pred);
3715                 free(pred);
3716         }
3717
3718         if (order_hash) {
3719                 char* string = NULL;
3720                 if ( (_tmp = jsonObjectGetKeyConst( order_hash, "order_by" )) ){
3721
3722                         growing_buffer* order_buf = buffer_init(128);
3723
3724                         first = 1;
3725                         jsonIterator* class_itr = jsonNewIterator( _tmp );
3726                         while ( (snode = jsonIteratorNext( class_itr )) ) {
3727
3728                                 if (!jsonObjectGetKeyConst(selhash,class_itr->key))
3729                                         continue;
3730
3731                                 if ( snode->type == JSON_HASH ) {
3732
3733                                         jsonIterator* order_itr = jsonNewIterator( snode );
3734                                         while ( (onode = jsonIteratorNext( order_itr )) ) {
3735
3736                                                 if (!oilsIDLFindPath( "/%s/fields/%s", class_itr->key, order_itr->key ))
3737                                                         continue;
3738
3739                                                 char* direction = NULL;
3740                                                 if ( onode->type == JSON_HASH ) {
3741                                                         if ( jsonObjectGetKeyConst( onode, "transform" ) ) {
3742                                                                 string = searchFieldTransform(
3743                                                                         class_itr->key,
3744                                                                         oilsIDLFindPath( "/%s/fields/%s", class_itr->key, order_itr->key ),
3745                                                                         onode
3746                                                                 );
3747                                                                 if( ! string ) {
3748                                                                         osrfAppSessionStatus(
3749                                                                                 ctx->session,
3750                                                                                 OSRF_STATUS_INTERNALSERVERERROR,
3751                                                                                 "osrfMethodException",
3752                                                                                 ctx->request,
3753                                                                                 "Severe query error in ORDER BY clause -- see error log for more details"
3754                                                                         );
3755                                                                         jsonIteratorFree( order_itr );
3756                                                                         jsonIteratorFree( class_itr );
3757                                                                         buffer_free( order_buf );
3758                                                                         buffer_free( sql_buf );
3759                                                                         if( defaultselhash ) jsonObjectFree( defaultselhash );
3760                                                                         return NULL;
3761                                                                 }
3762                                                         } else {
3763                                                                 growing_buffer* field_buf = buffer_init(16);
3764                                                                 buffer_fadd(field_buf, "\"%s\".%s", class_itr->key, order_itr->key);
3765                                                                 string = buffer_release(field_buf);
3766                                                         }
3767
3768                                                         if ( (_tmp = jsonObjectGetKeyConst( onode, "direction" )) ) {
3769                                                                 const char* dir = jsonObjectGetString(_tmp);
3770                                                                 if (!strncasecmp(dir, "d", 1)) {
3771                                                                         direction = " DESC";
3772                                                                 } else {
3773                                                                         free(direction);
3774                                                                 }
3775                                                         }
3776
3777                                                 } else {
3778                                                         string = strdup(order_itr->key);
3779                                                         const char* dir = jsonObjectGetString(onode);
3780                                                         if (!strncasecmp(dir, "d", 1)) {
3781                                                                 direction = " DESC";
3782                                                         } else {
3783                                                                 direction = " ASC";
3784                                                         }
3785                                                 }
3786
3787                                                 if (first) {
3788                                                         first = 0;
3789                                                 } else {
3790                                                         buffer_add(order_buf, ", ");
3791                                                 }
3792
3793                                                 buffer_add(order_buf, string);
3794                                                 free(string);
3795
3796                                                 if (direction) {
3797                                                         buffer_add(order_buf, direction);
3798                                                 }
3799
3800                                         }
3801
3802                     jsonIteratorFree(order_itr);
3803
3804                                 } else {
3805                                         const char* str = jsonObjectGetString(snode);
3806                                         buffer_add(order_buf, str);
3807                                         break;
3808                                 }
3809
3810                         }
3811
3812                         jsonIteratorFree(class_itr);
3813
3814                         string = buffer_release(order_buf);
3815
3816                         if ( *string ) {
3817                                 OSRF_BUFFER_ADD( sql_buf, " ORDER BY " );
3818                                 OSRF_BUFFER_ADD( sql_buf, string );
3819                         }
3820
3821                         free(string);
3822                 }
3823
3824                 if ( (_tmp = jsonObjectGetKeyConst( order_hash, "limit" )) ){
3825                         const char* str = jsonObjectGetString(_tmp);
3826                         buffer_fadd(
3827                                 sql_buf,
3828                                 " LIMIT %d",
3829                                 atoi(str)
3830                         );
3831                 }
3832
3833                 _tmp = jsonObjectGetKeyConst( order_hash, "offset" );
3834                 if (_tmp) {
3835                         const char* str = jsonObjectGetString(_tmp);
3836                         buffer_fadd(
3837                                 sql_buf,
3838                                 " OFFSET %d",
3839                                 atoi(str)
3840                         );
3841                 }
3842         }
3843
3844         if (defaultselhash) jsonObjectFree(defaultselhash);
3845
3846         OSRF_BUFFER_ADD_CHAR(sql_buf, ';');
3847         return buffer_release(sql_buf);
3848 }
3849
3850 int doJSONSearch ( osrfMethodContext* ctx ) {
3851         if(osrfMethodVerifyContext( ctx )) {
3852                 osrfLogError( OSRF_LOG_MARK,  "Invalid method context" );
3853                 return -1;
3854         }
3855
3856         osrfLogDebug(OSRF_LOG_MARK, "Recieved query request");
3857
3858         int err = 0;
3859
3860         // XXX for now...
3861         dbhandle = writehandle;
3862
3863         jsonObject* hash = jsonObjectGetIndex(ctx->params, 0);
3864
3865         int flags = 0;
3866
3867         if ( obj_is_true( jsonObjectGetKey( hash, "distinct" ) ) )
3868                 flags |= SELECT_DISTINCT;
3869
3870         if ( obj_is_true( jsonObjectGetKey( hash, "no_i18n" ) ) )
3871                 flags |= DISABLE_I18N;
3872
3873         osrfLogDebug(OSRF_LOG_MARK, "Building SQL ...");
3874         char* sql = SELECT(
3875                         ctx,
3876                         jsonObjectGetKey( hash, "select" ),
3877                         jsonObjectGetKey( hash, "from" ),
3878                         jsonObjectGetKey( hash, "where" ),
3879                         jsonObjectGetKey( hash, "having" ),
3880                         jsonObjectGetKey( hash, "order_by" ),
3881                         jsonObjectGetKey( hash, "limit" ),
3882                         jsonObjectGetKey( hash, "offset" ),
3883                         flags
3884         );
3885
3886         if (!sql) {
3887                 err = -1;
3888                 return err;
3889         }
3890
3891         osrfLogDebug(OSRF_LOG_MARK, "%s SQL =  %s", MODULENAME, sql);
3892         dbi_result result = dbi_conn_query(dbhandle, sql);
3893
3894         if(result) {
3895                 osrfLogDebug(OSRF_LOG_MARK, "Query returned with no errors");
3896
3897                 if (dbi_result_first_row(result)) {
3898                         /* JSONify the result */
3899                         osrfLogDebug(OSRF_LOG_MARK, "Query returned at least one row");
3900
3901                         do {
3902                                 jsonObject* return_val = oilsMakeJSONFromResult( result );
3903                                 osrfAppRespond( ctx, return_val );
3904                 jsonObjectFree( return_val );
3905                         } while (dbi_result_next_row(result));
3906
3907                 } else {
3908                         osrfLogDebug(OSRF_LOG_MARK, "%s returned no results for query %s", MODULENAME, sql);
3909                 }
3910
3911                 osrfAppRespondComplete( ctx, NULL );
3912
3913                 /* clean up the query */
3914                 dbi_result_free(result);
3915
3916         } else {
3917                 err = -1;
3918                 osrfLogError(OSRF_LOG_MARK, "%s: Error with query [%s]", MODULENAME, sql);
3919                 osrfAppSessionStatus(
3920                         ctx->session,
3921                         OSRF_STATUS_INTERNALSERVERERROR,
3922                         "osrfMethodException",
3923                         ctx->request,
3924                         "Severe query error -- see error log for more details"
3925                 );
3926         }
3927
3928         free(sql);
3929         return err;
3930 }
3931
3932 static jsonObject* doFieldmapperSearch ( osrfMethodContext* ctx, osrfHash* meta,
3933                 const jsonObject* params, int* err ) {
3934
3935         // XXX for now...
3936         dbhandle = writehandle;
3937
3938         osrfHash* links = osrfHashGet(meta, "links");
3939         osrfHash* fields = osrfHashGet(meta, "fields");
3940         char* core_class = osrfHashGet(meta, "classname");
3941         char* pkey = osrfHashGet(meta, "primarykey");
3942
3943         const jsonObject* _tmp;
3944         jsonObject* obj;
3945         jsonObject* search_hash = jsonObjectGetIndex(params, 0);
3946         jsonObject* order_hash = jsonObjectGetIndex(params, 1);
3947
3948         char* sql = buildSELECT( search_hash, order_hash, meta, ctx );
3949         if (!sql) {
3950                 osrfLogDebug(OSRF_LOG_MARK, "Problem building query, returning NULL");
3951                 *err = -1;
3952                 return NULL;
3953         }
3954
3955         osrfLogDebug(OSRF_LOG_MARK, "%s SQL =  %s", MODULENAME, sql);
3956
3957         dbi_result result = dbi_conn_query(dbhandle, sql);
3958         if( NULL == result ) {
3959                 osrfLogError(OSRF_LOG_MARK, "%s: Error retrieving %s with query [%s]",
3960                         MODULENAME, osrfHashGet(meta, "fieldmapper"), sql);
3961                 osrfAppSessionStatus(
3962                         ctx->session,
3963                         OSRF_STATUS_INTERNALSERVERERROR,
3964                         "osrfMethodException",
3965                         ctx->request,
3966                         "Severe query error -- see error log for more details"
3967                 );
3968                 *err = -1;
3969                 free(sql);
3970                 return jsonNULL;
3971
3972         } else {
3973                 osrfLogDebug(OSRF_LOG_MARK, "Query returned with no errors");
3974         }
3975
3976         jsonObject* res_list = jsonNewObjectType(JSON_ARRAY);
3977         osrfHash* dedup = osrfNewHash();
3978
3979         if (dbi_result_first_row(result)) {
3980                 /* JSONify the result */
3981                 osrfLogDebug(OSRF_LOG_MARK, "Query returned at least one row");
3982                 do {
3983                         obj = oilsMakeFieldmapperFromResult( result, meta );
3984                         char* pkey_val = oilsFMGetString( obj, pkey );
3985                         if ( osrfHashGet( dedup, pkey_val ) ) {
3986                                 jsonObjectFree(obj);
3987                                 free(pkey_val);
3988                         } else {
3989                                 osrfHashSet( dedup, pkey_val, pkey_val );
3990                                 jsonObjectPush(res_list, obj);
3991                         }
3992                 } while (dbi_result_next_row(result));
3993         } else {
3994                 osrfLogDebug(OSRF_LOG_MARK, "%s returned no results for query %s",
3995                         MODULENAME, sql );
3996         }
3997
3998         osrfHashFree(dedup);
3999         /* clean up the query */
4000         dbi_result_free(result);
4001         free(sql);
4002
4003         if (res_list->size && order_hash) {
4004                 _tmp = jsonObjectGetKeyConst( order_hash, "flesh" );
4005                 if (_tmp) {
4006                         int x = (int)jsonObjectGetNumber(_tmp);
4007                         if (x == -1 || x > max_flesh_depth) x = max_flesh_depth;
4008
4009                         const jsonObject* temp_blob;
4010                         if ((temp_blob = jsonObjectGetKeyConst( order_hash, "flesh_fields" )) && x > 0) {
4011
4012                                 jsonObject* flesh_blob = jsonObjectClone( temp_blob );
4013                                 const jsonObject* flesh_fields = jsonObjectGetKeyConst( flesh_blob, core_class );
4014
4015                                 osrfStringArray* link_fields = NULL;
4016
4017                                 if (flesh_fields) {
4018                                         if (flesh_fields->size == 1) {
4019                                                 const char* _t = jsonObjectGetString( jsonObjectGetIndex( flesh_fields, 0 ) );
4020                                                 if (!strcmp(_t,"*")) link_fields = osrfHashKeys( links );
4021                                         }
4022
4023                                         if (!link_fields) {
4024                                                 jsonObject* _f;
4025                                                 link_fields = osrfNewStringArray(1);
4026                                                 jsonIterator* _i = jsonNewIterator( flesh_fields );
4027                                                 while ((_f = jsonIteratorNext( _i ))) {
4028                                                         osrfStringArrayAdd( link_fields, jsonObjectGetString( _f ) );
4029                                                 }
4030                         jsonIteratorFree(_i);
4031                                         }
4032                                 }
4033
4034                                 jsonObject* cur;
4035                                 jsonIterator* itr = jsonNewIterator( res_list );
4036                                 while ((cur = jsonIteratorNext( itr ))) {
4037
4038                                         int i = 0;
4039                                         char* link_field;
4040
4041                                         while ( (link_field = osrfStringArrayGetString(link_fields, i++)) ) {
4042
4043                                                 osrfLogDebug(OSRF_LOG_MARK, "Starting to flesh %s", link_field);
4044
4045                                                 osrfHash* kid_link = osrfHashGet(links, link_field);
4046                                                 if (!kid_link) continue;
4047
4048                                                 osrfHash* field = osrfHashGet(fields, link_field);
4049                                                 if (!field) continue;
4050
4051                                                 osrfHash* value_field = field;
4052
4053                                                 osrfHash* kid_idl = osrfHashGet(oilsIDL(), osrfHashGet(kid_link, "class"));
4054                                                 if (!kid_idl) continue;
4055
4056                                                 if (!(strcmp( osrfHashGet(kid_link, "reltype"), "has_many" ))) { // has_many
4057                                                         value_field = osrfHashGet( fields, osrfHashGet(meta, "primarykey") );
4058                                                 }
4059
4060                                                 if (!(strcmp( osrfHashGet(kid_link, "reltype"), "might_have" ))) { // might_have
4061                                                         value_field = osrfHashGet( fields, osrfHashGet(meta, "primarykey") );
4062                                                 }
4063
4064                                                 osrfStringArray* link_map = osrfHashGet( kid_link, "map" );
4065
4066                                                 if (link_map->size > 0) {
4067                                                         jsonObject* _kid_key = jsonNewObjectType(JSON_ARRAY);
4068                                                         jsonObjectPush(
4069                                                                 _kid_key,
4070                                                                 jsonNewObject( osrfStringArrayGetString( link_map, 0 ) )
4071                                                         );
4072
4073                                                         jsonObjectSetKey(
4074                                                                 flesh_blob,
4075                                                                 osrfHashGet(kid_link, "class"),
4076                                                                 _kid_key
4077                                                         );
4078                                                 };
4079
4080                                                 osrfLogDebug(
4081                                                         OSRF_LOG_MARK,
4082                                                         "Link field: %s, remote class: %s, fkey: %s, reltype: %s",
4083                                                         osrfHashGet(kid_link, "field"),
4084                                                         osrfHashGet(kid_link, "class"),
4085                                                         osrfHashGet(kid_link, "key"),
4086                                                         osrfHashGet(kid_link, "reltype")
4087                                                 );
4088
4089                                                 jsonObject* fake_params = jsonNewObjectType(JSON_ARRAY);
4090                                                 jsonObjectPush(fake_params, jsonNewObjectType(JSON_HASH)); // search hash
4091                                                 jsonObjectPush(fake_params, jsonNewObjectType(JSON_HASH)); // order/flesh hash
4092
4093                                                 osrfLogDebug(OSRF_LOG_MARK, "Creating dummy params object...");
4094
4095                                                 const char* search_key = jsonObjectGetString(
4096                                                         jsonObjectGetIndex(
4097                                                                 cur,
4098                                                                 atoi( osrfHashGet(value_field, "array_position") )
4099                                                         )
4100                                                 );
4101
4102                                                 if (!search_key) {
4103                                                         osrfLogDebug(OSRF_LOG_MARK, "Nothing to search for!");
4104                                                         continue;
4105                                                 }
4106
4107                                                 jsonObjectSetKey(
4108                                                         jsonObjectGetIndex(fake_params, 0),
4109                                                         osrfHashGet(kid_link, "key"),
4110                                                         jsonNewObject( search_key )
4111                                                 );
4112
4113                                                 jsonObjectSetKey(
4114                                                         jsonObjectGetIndex(fake_params, 1),
4115                                                         "flesh",
4116                                                         jsonNewNumberObject( (double)(x - 1 + link_map->size) )
4117                                                 );
4118
4119                                                 if (flesh_blob)
4120                                                         jsonObjectSetKey( jsonObjectGetIndex(fake_params, 1), "flesh_fields", jsonObjectClone(flesh_blob) );
4121
4122                                                 if (jsonObjectGetKeyConst(order_hash, "order_by")) {
4123                                                         jsonObjectSetKey(
4124                                                                 jsonObjectGetIndex(fake_params, 1),
4125                                                                 "order_by",
4126                                                                 jsonObjectClone(jsonObjectGetKeyConst(order_hash, "order_by"))
4127                                                         );
4128                                                 }
4129
4130                                                 if (jsonObjectGetKeyConst(order_hash, "select")) {
4131                                                         jsonObjectSetKey(
4132                                                                 jsonObjectGetIndex(fake_params, 1),
4133                                                                 "select",
4134                                                                 jsonObjectClone(jsonObjectGetKeyConst(order_hash, "select"))
4135                                                         );
4136                                                 }
4137
4138                                                 jsonObject* kids = doFieldmapperSearch(ctx, kid_idl, fake_params, err);
4139
4140                                                 if(*err) {
4141                                                         jsonObjectFree( fake_params );
4142                                                         osrfStringArrayFree(link_fields);
4143                                                         jsonIteratorFree(itr);
4144                                                         jsonObjectFree(res_list);
4145                                                         jsonObjectFree(flesh_blob);
4146                                                         return jsonNULL;
4147                                                 }
4148
4149                                                 osrfLogDebug(OSRF_LOG_MARK, "Search for %s return %d linked objects", osrfHashGet(kid_link, "class"), kids->size);
4150
4151                                                 jsonObject* X = NULL;
4152                                                 if ( link_map->size > 0 && kids->size > 0 ) {
4153                                                         X = kids;
4154                                                         kids = jsonNewObjectType(JSON_ARRAY);
4155
4156                                                         jsonObject* _k_node;
4157                                                         jsonIterator* _k = jsonNewIterator( X );
4158                                                         while ((_k_node = jsonIteratorNext( _k ))) {
4159                                                                 jsonObjectPush(
4160                                                                         kids,
4161                                                                         jsonObjectClone(
4162                                                                                 jsonObjectGetIndex(
4163                                                                                         _k_node,
4164                                                                                         (unsigned long)atoi(
4165                                                                                                 osrfHashGet(
4166                                                                                                         osrfHashGet(
4167                                                                                                                 osrfHashGet(
4168                                                                                                                         osrfHashGet(
4169                                                                                                                                 oilsIDL(),
4170                                                                                                                                 osrfHashGet(kid_link, "class")
4171                                                                                                                         ),
4172                                                                                                                         "fields"
4173                                                                                                                 ),
4174                                                                                                                 osrfStringArrayGetString( link_map, 0 )
4175                                                                                                         ),
4176                                                                                                         "array_position"
4177                                                                                                 )
4178                                                                                         )
4179                                                                                 )
4180                                                                         )
4181                                                                 );
4182                                                         }
4183                                                         jsonIteratorFree(_k);
4184                                                 }
4185
4186                                                 if (!(strcmp( osrfHashGet(kid_link, "reltype"), "has_a" )) || !(strcmp( osrfHashGet(kid_link, "reltype"), "might_have" ))) {
4187                                                         osrfLogDebug(OSRF_LOG_MARK, "Storing fleshed objects in %s", osrfHashGet(kid_link, "field"));
4188                                                         jsonObjectSetIndex(
4189                                                                 cur,
4190                                                                 (unsigned long)atoi( osrfHashGet( field, "array_position" ) ),
4191                                                                 jsonObjectClone( jsonObjectGetIndex(kids, 0) )
4192                                                         );
4193                                                 }
4194
4195                                                 if (!(strcmp( osrfHashGet(kid_link, "reltype"), "has_many" ))) { // has_many
4196                                                         osrfLogDebug(OSRF_LOG_MARK, "Storing fleshed objects in %s", osrfHashGet(kid_link, "field"));
4197                                                         jsonObjectSetIndex(
4198                                                                 cur,
4199                                                                 (unsigned long)atoi( osrfHashGet( field, "array_position" ) ),
4200                                                                 jsonObjectClone( kids )
4201                                                         );
4202                                                 }
4203
4204                                                 if (X) {
4205                                                         jsonObjectFree(kids);
4206                                                         kids = X;
4207                                                 }
4208
4209                                                 jsonObjectFree( kids );
4210                                                 jsonObjectFree( fake_params );
4211
4212                                                 osrfLogDebug(OSRF_LOG_MARK, "Fleshing of %s complete", osrfHashGet(kid_link, "field"));
4213                                                 osrfLogDebug(OSRF_LOG_MARK, "%s", jsonObjectToJSON(cur));
4214
4215                                         }
4216                                 }
4217                                 jsonObjectFree( flesh_blob );
4218                                 osrfStringArrayFree(link_fields);
4219                                 jsonIteratorFree(itr);
4220                         }
4221                 }
4222         }
4223
4224         return res_list;
4225 }
4226
4227
4228 static jsonObject* doUpdate(osrfMethodContext* ctx, int* err ) {
4229
4230         osrfHash* meta = osrfHashGet( (osrfHash*) ctx->method->userData, "class" );
4231 #ifdef PCRUD
4232         jsonObject* target = jsonObjectGetIndex( ctx->params, 1 );
4233 #else
4234         jsonObject* target = jsonObjectGetIndex( ctx->params, 0 );
4235 #endif
4236
4237         if (!verifyObjectClass(ctx, target)) {
4238                 *err = -1;
4239                 return jsonNULL;
4240         }
4241
4242         if (!osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )) {
4243                 osrfAppSessionStatus(
4244                         ctx->session,
4245                         OSRF_STATUS_BADREQUEST,
4246                         "osrfMethodException",
4247                         ctx->request,
4248                         "No active transaction -- required for UPDATE"
4249                 );
4250                 *err = -1;
4251                 return jsonNULL;
4252         }
4253
4254         // The following test is harmless but redundant.  If a class is
4255         // readonly, we don't register an update method for it.
4256         if( str_is_true( osrfHashGet( meta, "readonly" ) ) ) {
4257                 osrfAppSessionStatus(
4258                         ctx->session,
4259                         OSRF_STATUS_BADREQUEST,
4260                         "osrfMethodException",
4261                         ctx->request,
4262                         "Cannot UPDATE readonly class"
4263                 );
4264                 *err = -1;
4265                 return jsonNULL;
4266         }
4267
4268         dbhandle = writehandle;
4269
4270         char* trans_id = osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" );
4271
4272         // Set the last_xact_id
4273         int index = oilsIDL_ntop( target->classname, "last_xact_id" );
4274         if (index > -1) {
4275                 osrfLogDebug(OSRF_LOG_MARK, "Setting last_xact_id to %s on %s at position %d", trans_id, target->classname, index);
4276                 jsonObjectSetIndex(target, index, jsonNewObject(trans_id));
4277         }
4278
4279         char* pkey = osrfHashGet(meta, "primarykey");
4280         osrfHash* fields = osrfHashGet(meta, "fields");
4281
4282         char* id = oilsFMGetString( target, pkey );
4283
4284         osrfLogDebug(
4285                 OSRF_LOG_MARK,
4286                 "%s updating %s object with %s = %s",
4287                 MODULENAME,
4288                 osrfHashGet(meta, "fieldmapper"),
4289                 pkey,
4290                 id
4291         );
4292
4293         growing_buffer* sql = buffer_init(128);
4294         buffer_fadd(sql,"UPDATE %s SET", osrfHashGet(meta, "tablename"));
4295
4296         int i = 0;
4297         int first = 1;
4298         char* field_name;
4299         osrfStringArray* field_list = osrfHashKeys( fields );
4300         while ( (field_name = osrfStringArrayGetString(field_list, i++)) ) {
4301
4302                 osrfHash* field = osrfHashGet( fields, field_name );
4303
4304                 if(!( strcmp( field_name, pkey ) )) continue;
4305                 if( str_is_true( osrfHashGet(osrfHashGet(fields,field_name), "virtual") ) )
4306                         continue;
4307
4308                 const jsonObject* field_object = oilsFMGetObject( target, field_name );
4309
4310                 int value_is_numeric = 0;    // boolean
4311                 char* value;
4312                 if (field_object && field_object->classname) {
4313                         value = oilsFMGetString(
4314                                 field_object,
4315                                 (char*)oilsIDLFindPath("/%s/primarykey", field_object->classname)
4316             );
4317                 } else {
4318                         value = jsonObjectToSimpleString( field_object );
4319                         if( field_object && JSON_NUMBER == field_object->type )
4320                                 value_is_numeric = 1;
4321                 }
4322
4323                 osrfLogDebug( OSRF_LOG_MARK, "Updating %s object with %s = %s", osrfHashGet(meta, "fieldmapper"), field_name, value);
4324
4325                 if (!field_object || field_object->type == JSON_NULL) {
4326                         if ( !(!( strcmp( osrfHashGet(meta, "classname"), "au" ) ) && !( strcmp( field_name, "passwd" ) )) ) { // arg at the special case!
4327                                 if (first) first = 0;
4328                                 else OSRF_BUFFER_ADD_CHAR(sql, ',');
4329                                 buffer_fadd( sql, " %s = NULL", field_name );
4330                         }
4331
4332                 } else if ( value_is_numeric || !strcmp( get_primitive( field ), "number") ) {
4333                         if (first) first = 0;
4334                         else OSRF_BUFFER_ADD_CHAR(sql, ',');
4335
4336                         const char* numtype = get_datatype( field );
4337                         if ( !strncmp( numtype, "INT", 3 ) ) {
4338                                 buffer_fadd( sql, " %s = %ld", field_name, atol(value) );
4339                         } else if ( !strcmp( numtype, "NUMERIC" ) ) {
4340                                 buffer_fadd( sql, " %s = %f", field_name, atof(value) );
4341                         } else {
4342                                 // Must really be intended as a string, so quote it
4343                                 if ( dbi_conn_quote_string(dbhandle, &value) ) {
4344                                         buffer_fadd( sql, " %s = %s", field_name, value );
4345                                 } else {
4346                                         osrfLogError(OSRF_LOG_MARK, "%s: Error quoting string [%s]", MODULENAME, value);
4347                                         osrfAppSessionStatus(
4348                                                 ctx->session,
4349                                                 OSRF_STATUS_INTERNALSERVERERROR,
4350                                                 "osrfMethodException",
4351                                                 ctx->request,
4352                                                 "Error quoting string -- please see the error log for more details"
4353                                         );
4354                                         free(value);
4355                                         free(id);
4356                                         buffer_free(sql);
4357                                         *err = -1;
4358                                         return jsonNULL;
4359                                 }
4360                         }
4361
4362                         osrfLogDebug( OSRF_LOG_MARK, "%s is of type %s", field_name, numtype );
4363
4364                 } else {
4365                         if ( dbi_conn_quote_string(dbhandle, &value) ) {
4366                                 if (first) first = 0;
4367                                 else OSRF_BUFFER_ADD_CHAR(sql, ',');
4368                                 buffer_fadd( sql, " %s = %s", field_name, value );
4369
4370                         } else {
4371                                 osrfLogError(OSRF_LOG_MARK, "%s: Error quoting string [%s]", MODULENAME, value);
4372                                 osrfAppSessionStatus(
4373                                         ctx->session,
4374                                         OSRF_STATUS_INTERNALSERVERERROR,
4375                                         "osrfMethodException",
4376                                         ctx->request,
4377                                         "Error quoting string -- please see the error log for more details"
4378                                 );
4379                                 free(value);
4380                                 free(id);
4381                                 buffer_free(sql);
4382                                 *err = -1;
4383                                 return jsonNULL;
4384                         }
4385                 }
4386
4387                 free(value);
4388
4389         }
4390
4391         jsonObject* obj = jsonNewObject(id);
4392
4393         if ( strcmp( get_primitive( osrfHashGet( osrfHashGet(meta, "fields"), pkey ) ), "number" ) )
4394                 dbi_conn_quote_string(dbhandle, &id);
4395
4396         buffer_fadd( sql, " WHERE %s = %s;", pkey, id );
4397
4398         char* query = buffer_release(sql);
4399         osrfLogDebug(OSRF_LOG_MARK, "%s: Update SQL [%s]", MODULENAME, query);
4400
4401         dbi_result result = dbi_conn_query(dbhandle, query);
4402         free(query);
4403
4404         if (!result) {
4405                 jsonObjectFree(obj);
4406                 obj = jsonNewObject(NULL);
4407                 osrfLogError(
4408                         OSRF_LOG_MARK,
4409                         "%s ERROR updating %s object with %s = %s",
4410                         MODULENAME,
4411                         osrfHashGet(meta, "fieldmapper"),
4412                         pkey,
4413                         id
4414                 );
4415         }
4416
4417         free(id);
4418
4419         return obj;
4420 }
4421
4422 static jsonObject* doDelete(osrfMethodContext* ctx, int* err ) {
4423
4424         osrfHash* meta = osrfHashGet( (osrfHash*) ctx->method->userData, "class" );
4425
4426         if (!osrfHashGet( (osrfHash*)ctx->session->userData, "xact_id" )) {
4427                 osrfAppSessionStatus(
4428                         ctx->session,
4429                         OSRF_STATUS_BADREQUEST,
4430                         "osrfMethodException",
4431                         ctx->request,
4432                         "No active transaction -- required for DELETE"
4433                 );
4434                 *err = -1;
4435                 return jsonNULL;
4436         }
4437
4438         // The following test is harmless but redundant.  If a class is
4439         // readonly, we don't register a delete method for it.
4440         if( str_is_true( osrfHashGet( meta, "readonly" ) ) ) {
4441                 osrfAppSessionStatus(
4442                         ctx->session,
4443                         OSRF_STATUS_BADREQUEST,
4444                         "osrfMethodException",
4445                         ctx->request,
4446                         "Cannot DELETE readonly class"
4447                 );
4448                 *err = -1;
4449                 return jsonNULL;
4450         }
4451
4452         dbhandle = writehandle;
4453
4454         jsonObject* obj;
4455
4456         char* pkey = osrfHashGet(meta, "primarykey");
4457
4458         int _obj_pos = 0;
4459 #ifdef PCRUD
4460                 _obj_pos = 1;
4461 #endif
4462
4463         char* id;
4464         if (jsonObjectGetIndex(ctx->params, _obj_pos)->classname) {
4465                 if (!verifyObjectClass(ctx, jsonObjectGetIndex( ctx->params, _obj_pos ))) {
4466                         *err = -1;
4467                         return jsonNULL;
4468                 }
4469
4470                 id = oilsFMGetString( jsonObjectGetIndex(ctx->params, _obj_pos), pkey );
4471         } else {
4472 #ifdef PCRUD
4473         if (!verifyObjectPCRUD( ctx, NULL )) {
4474                         *err = -1;
4475                         return jsonNULL;
4476         }
4477 #endif
4478                 id = jsonObjectToSimpleString(jsonObjectGetIndex(ctx->params, _obj_pos));
4479         }
4480
4481         osrfLogDebug(
4482                 OSRF_LOG_MARK,
4483                 "%s deleting %s object with %s = %s",
4484                 MODULENAME,
4485                 osrfHashGet(meta, "fieldmapper"),
4486                 pkey,
4487                 id
4488         );
4489
4490         obj = jsonNewObject(id);
4491
4492         if ( strcmp( get_primitive( osrfHashGet( osrfHashGet(meta, "fields"), pkey ) ), "number" ) )
4493                 dbi_conn_quote_string(writehandle, &id);
4494
4495         dbi_result result = dbi_conn_queryf(writehandle, "DELETE FROM %s WHERE %s = %s;", osrfHashGet(meta, "tablename"), pkey, id);
4496
4497         if (!result) {
4498                 jsonObjectFree(obj);
4499                 obj = jsonNewObject(NULL);
4500                 osrfLogError(
4501                         OSRF_LOG_MARK,
4502                         "%s ERROR deleting %s object with %s = %s",
4503                         MODULENAME,
4504                         osrfHashGet(meta, "fieldmapper"),
4505                         pkey,
4506                         id
4507                 );
4508         }
4509
4510         free(id);
4511
4512         return obj;
4513
4514 }
4515
4516
4517 static jsonObject* oilsMakeFieldmapperFromResult( dbi_result result, osrfHash* meta) {
4518         if(!(result && meta)) return jsonNULL;
4519
4520         jsonObject* object = jsonNewObject(NULL);
4521         jsonObjectSetClass(object, osrfHashGet(meta, "classname"));
4522
4523         osrfHash* fields = osrfHashGet(meta, "fields");
4524
4525         osrfLogInternal(OSRF_LOG_MARK, "Setting object class to %s ", object->classname);
4526
4527         osrfHash* _f;
4528         time_t _tmp_dt;
4529         char dt_string[256];
4530         struct tm gmdt;
4531
4532         int fmIndex;
4533         int columnIndex = 1;
4534         int attr;
4535         unsigned short type;
4536         const char* columnName;
4537
4538         /* cycle through the column list */
4539         while( (columnName = dbi_result_get_field_name(result, columnIndex++)) ) {
4540
4541                 osrfLogInternal(OSRF_LOG_MARK, "Looking for column named [%s]...", (char*)columnName);
4542
4543                 fmIndex = -1; // reset the position
4544
4545                 /* determine the field type and storage attributes */
4546                 type = dbi_result_get_field_type(result, columnName);
4547                 attr = dbi_result_get_field_attribs(result, columnName);
4548
4549                 /* fetch the fieldmapper index */
4550                 if( (_f = osrfHashGet(fields, (char*)columnName)) ) {
4551
4552                         if ( str_is_true( osrfHashGet(_f, "virtual") ) )
4553                                 continue;
4554
4555                         const char* pos = (char*)osrfHashGet(_f, "array_position");
4556                         if ( !pos ) continue;
4557
4558                         fmIndex = atoi( pos );
4559                         osrfLogInternal(OSRF_LOG_MARK, "... Found column at position [%s]...", pos);
4560                 } else {
4561                         continue;
4562                 }
4563
4564                 if (dbi_result_field_is_null(result, columnName)) {
4565                         jsonObjectSetIndex( object, fmIndex, jsonNewObject(NULL) );
4566                 } else {
4567
4568                         switch( type ) {
4569
4570                                 case DBI_TYPE_INTEGER :
4571
4572                                         if( attr & DBI_INTEGER_SIZE8 )
4573                                                 jsonObjectSetIndex( object, fmIndex,
4574                                                         jsonNewNumberObject(dbi_result_get_longlong(result, columnName)));
4575                                         else
4576                                                 jsonObjectSetIndex( object, fmIndex,
4577                                                         jsonNewNumberObject(dbi_result_get_int(result, columnName)));
4578
4579                                         break;
4580
4581                                 case DBI_TYPE_DECIMAL :
4582                                         jsonObjectSetIndex( object, fmIndex,
4583                                                         jsonNewNumberObject(dbi_result_get_double(result, columnName)));
4584                                         break;
4585
4586                                 case DBI_TYPE_STRING :
4587
4588
4589                                         jsonObjectSetIndex(
4590                                                 object,
4591                                                 fmIndex,
4592                                                 jsonNewObject( dbi_result_get_string(result, columnName) )
4593                                         );
4594
4595                                         break;
4596
4597                                 case DBI_TYPE_DATETIME :
4598
4599                                         memset(dt_string, '\0', sizeof(dt_string));
4600                                         memset(&gmdt, '\0', sizeof(gmdt));
4601
4602                                         _tmp_dt = dbi_result_get_datetime(result, columnName);
4603
4604
4605                                         if (!(attr & DBI_DATETIME_DATE)) {
4606                                                 gmtime_r( &_tmp_dt, &gmdt );
4607                                                 strftime(dt_string, sizeof(dt_string), "%T", &gmdt);
4608                                         } else if (!(attr & DBI_DATETIME_TIME)) {
4609                                                 localtime_r( &_tmp_dt, &gmdt );
4610                                                 strftime(dt_string, sizeof(dt_string), "%F", &gmdt);
4611                                         } else {
4612                                                 localtime_r( &_tmp_dt, &gmdt );
4613                                                 strftime(dt_string, sizeof(dt_string), "%FT%T%z", &gmdt);
4614                                         }
4615
4616                                         jsonObjectSetIndex( object, fmIndex, jsonNewObject(dt_string) );
4617
4618                                         break;
4619
4620                                 case DBI_TYPE_BINARY :
4621                                         osrfLogError( OSRF_LOG_MARK,
4622                                                 "Can't do binary at column %s : index %d", columnName, columnIndex - 1);
4623                         }
4624                 }
4625         }
4626
4627         return object;
4628 }
4629
4630 static jsonObject* oilsMakeJSONFromResult( dbi_result result ) {
4631         if(!result) return jsonNULL;
4632
4633         jsonObject* object = jsonNewObject(NULL);
4634
4635         time_t _tmp_dt;
4636         char dt_string[256];
4637         struct tm gmdt;
4638
4639         int fmIndex;
4640         int columnIndex = 1;
4641         int attr;
4642         unsigned short type;
4643         const char* columnName;
4644
4645         /* cycle through the column list */
4646         while( (columnName = dbi_result_get_field_name(result, columnIndex++)) ) {
4647
4648                 osrfLogInternal(OSRF_LOG_MARK, "Looking for column named [%s]...", (char*)columnName);
4649
4650                 fmIndex = -1; // reset the position
4651
4652                 /* determine the field type and storage attributes */
4653                 type = dbi_result_get_field_type(result, columnName);
4654                 attr = dbi_result_get_field_attribs(result, columnName);
4655
4656                 if (dbi_result_field_is_null(result, columnName)) {
4657                         jsonObjectSetKey( object, columnName, jsonNewObject(NULL) );
4658                 } else {
4659
4660                         switch( type ) {
4661
4662                                 case DBI_TYPE_INTEGER :
4663
4664                                         if( attr & DBI_INTEGER_SIZE8 )
4665                                                 jsonObjectSetKey( object, columnName, jsonNewNumberObject(dbi_result_get_longlong(result, columnName)) );
4666                                         else
4667                                                 jsonObjectSetKey( object, columnName, jsonNewNumberObject(dbi_result_get_int(result, columnName)) );
4668                                         break;
4669
4670                                 case DBI_TYPE_DECIMAL :
4671                                         jsonObjectSetKey( object, columnName, jsonNewNumberObject(dbi_result_get_double(result, columnName)) );
4672                                         break;
4673
4674                                 case DBI_TYPE_STRING :
4675                                         jsonObjectSetKey( object, columnName, jsonNewObject(dbi_result_get_string(result, columnName)) );
4676                                         break;
4677
4678                                 case DBI_TYPE_DATETIME :
4679
4680                                         memset(dt_string, '\0', sizeof(dt_string));
4681                                         memset(&gmdt, '\0', sizeof(gmdt));
4682
4683                                         _tmp_dt = dbi_result_get_datetime(result, columnName);
4684
4685
4686                                         if (!(attr & DBI_DATETIME_DATE)) {
4687                                                 gmtime_r( &_tmp_dt, &gmdt );
4688                                                 strftime(dt_string, sizeof(dt_string), "%T", &gmdt);
4689                                         } else if (!(attr & DBI_DATETIME_TIME)) {
4690                                                 localtime_r( &_tmp_dt, &gmdt );
4691                                                 strftime(dt_string, sizeof(dt_string), "%F", &gmdt);
4692                                         } else {
4693                                                 localtime_r( &_tmp_dt, &gmdt );
4694                                                 strftime(dt_string, sizeof(dt_string), "%FT%T%z", &gmdt);
4695                                         }
4696
4697                                         jsonObjectSetKey( object, columnName, jsonNewObject(dt_string) );
4698                                         break;
4699
4700                                 case DBI_TYPE_BINARY :
4701                                         osrfLogError( OSRF_LOG_MARK,
4702                                                 "Can't do binary at column %s : index %d", columnName, columnIndex - 1);
4703                         }
4704                 }
4705         }
4706
4707         return object;
4708 }
4709
4710 // Interpret a string as true or false
4711 static int str_is_true( const char* str ) {
4712         if( NULL == str || strcasecmp( str, "true" ) )
4713                 return 0;
4714         else
4715                 return 1;
4716 }
4717
4718 // Interpret a jsonObject as true or false
4719 static int obj_is_true( const jsonObject* obj ) {
4720         if( !obj )
4721                 return 0;
4722         else switch( obj->type )
4723         {
4724                 case JSON_BOOL :
4725                         if( obj->value.b )
4726                                 return 1;
4727                         else
4728                                 return 0;
4729                 case JSON_STRING :
4730                         if( strcasecmp( obj->value.s, "true" ) )
4731                                 return 0;
4732                         else
4733                                 return 1;
4734                 case JSON_NUMBER :          // Support 1/0 for perl's sake
4735                         if( jsonObjectGetNumber( obj ) == 1.0 )
4736                                 return 1;
4737                         else
4738                                 return 0;
4739                 default :
4740                         return 0;
4741         }
4742 }
4743
4744 // Translate a numeric code into a text string identifying a type of
4745 // jsonObject.  To be used for building error messages.
4746 static const char* json_type( int code ) {
4747         switch ( code )
4748         {
4749                 case 0 :
4750                         return "JSON_HASH";
4751                 case 1 :
4752                         return "JSON_ARRAY";
4753                 case 2 :
4754                         return "JSON_STRING";
4755                 case 3 :
4756                         return "JSON_NUMBER";
4757                 case 4 :
4758                         return "JSON_NULL";
4759                 case 5 :
4760                         return "JSON_BOOL";
4761                 default :
4762                         return "(unrecognized)";
4763         }
4764 }
4765
4766 // Extract the "primitive" attribute from an IDL field definition.
4767 // If we haven't initialized the app, then we must be running in
4768 // some kind of testbed.  In that case, default to "string".
4769 static const char* get_primitive( osrfHash* field ) {
4770         const char* s = osrfHashGet( field, "primitive" );
4771         if( !s ) {
4772                 if( child_initialized )
4773                         osrfLogError(
4774                                 OSRF_LOG_MARK,
4775                                 "%s ERROR No \"datatype\" attribute for field \"%s\"",
4776                                 MODULENAME,
4777                                 osrfHashGet( field, "name" )
4778                         );
4779                 else
4780                         s = "string";
4781         }
4782         return s;
4783 }
4784
4785 // Extract the "datatype" attribute from an IDL field definition.
4786 // If we haven't initialized the app, then we must be running in
4787 // some kind of testbed.  In that case, default to to NUMERIC,
4788 // since we look at the datatype only for numbers.
4789 static const char* get_datatype( osrfHash* field ) {
4790         const char* s = osrfHashGet( field, "datatype" );
4791         if( !s ) {
4792                 if( child_initialized )
4793                         osrfLogError(
4794                                 OSRF_LOG_MARK,
4795                                 "%s ERROR No \"datatype\" attribute for field \"%s\"",
4796                                 MODULENAME,
4797                                 osrfHashGet( field, "name" )
4798                         );
4799                 else
4800                         s = "NUMERIC";
4801         }
4802         return s;
4803 }
4804
4805 /*
4806 If the input string is potentially a valid SQL identifier, return 1.
4807 Otherwise return 0.
4808
4809 Purpose: to prevent certain kinds of SQL injection.  To that end we
4810 don't necessarily need to follow all the rules exactly, such as requiring
4811 that the first character not be a digit.
4812
4813 We allow leading and trailing white space.  In between, we do not allow
4814 punctuation (except for underscores and dollar signs), control
4815 characters, or embedded white space.
4816
4817 More pedantically we should allow quoted identifiers containing arbitrary
4818 characters, but for the foreseeable future such quoted identifiers are not
4819 likely to be an issue.
4820 */
4821 static int is_identifier( const char* s) {
4822         if( !s )
4823                 return 0;
4824
4825         // Skip leading white space
4826         while( isspace( (unsigned char) *s ) )
4827                 ++s;
4828
4829         if( !s )
4830                 return 0;   // Nothing but white space?  Not okay.
4831
4832         // Check each character until we reach white space or
4833         // end-of-string.  Letters, digits, underscores, and
4834         // dollar signs are okay. With the exception of periods
4835         // (as in schema.identifier), control characters and other
4836         // punctuation characters are not okay.  Anything else
4837         // is okay -- it could for example be part of a multibyte
4838         // UTF8 character such as a letter with diacritical marks,
4839         // and those are allowed.
4840         do {
4841                 if( isalnum( (unsigned char) *s )
4842                         || '.' == *s
4843                         || '_' == *s
4844                         || '$' == *s )
4845                         ;  // Fine; keep going
4846                 else if(   ispunct( (unsigned char) *s )
4847                                 || iscntrl( (unsigned char) *s ) )
4848                         return 0;
4849                         ++s;
4850         } while( *s && ! isspace( (unsigned char) *s ) );
4851
4852         // If we found any white space in the above loop,
4853         // the rest had better be all white space.
4854
4855         while( isspace( (unsigned char) *s ) )
4856                 ++s;
4857
4858         if( *s )
4859                 return 0;   // White space was embedded within non-white space
4860
4861         return 1;
4862 }
4863
4864 /*
4865 Determine whether to accept a character string as a comparison operator.
4866 Return 1 if it's good, or 0 if it's bad.
4867
4868 We don't validate it for real.  We just make sure that it doesn't contain
4869 any semicolons or white space (with a special exception for the
4870 "SIMILAR TO" operator).  The idea is to block certain kinds of SQL
4871 injection.  If it has no semicolons or white space but it's still not a
4872 valid operator, then the database will complain.
4873
4874 Another approach would be to compare the string against a short list of
4875 approved operators.  We don't do that because we want to allow custom
4876 operators like ">100*", which would be difficult or impossible to
4877 express otherwise in a JSON query.
4878 */
4879 static int is_good_operator( const char* op ) {
4880         if( !op ) return 0;   // Sanity check
4881
4882         const char* s = op;
4883         while( *s ) {
4884                 if( isspace( (unsigned char) *s ) ) {
4885                         // Special exception for SIMILAR TO.  Someday we might make
4886                         // exceptions for IS DISTINCT FROM and IS NOT DISTINCT FROM.
4887                         if( !strcasecmp( op, "similar to" ) )
4888                                 return 1;
4889                         else
4890                                 return 0;
4891                 }
4892                 else if( ';' == *s )
4893                         return 0;
4894                 ++s;
4895         }
4896         return 1;
4897 }