examples/fieldmapper2javascript.xsl

   1 <xsl:stylesheet
   2         version='1.0'
   3         xmlns:xsl='http://www.w3.org/1999/XSL/Transform'
   4         xmlns:opensrf="http://opensrf.org/xmlns/opensrf"
   5         xmlns:cdbi="http://opensrf.org/xmlns/opensrf/cdbi"
   6         xmlns:perl="http://opensrf.org/xmlns/opensrf/perl"
   7         xmlns:javascript="http://opensrf.org/xmlns/opensrf/javascript"
   8         xmlns:c="http://opensrf.org/xmlns/opensrf/c">
   9         <xsl:output method="text" />
  10         <xsl:strip-space elements="xsl:*"/>
  11         <xsl:variable name="last_field_pos"/>
  12
  13         <xsl:template match="/">
  14 // support functions
  15
  16 var IE = false;
  17 var unit_test = false;
  18
  19 function instanceOf(object, constructorFunction) {
  20         if(!IE) {
  21                 while (object != null) {
  22                         if (object == constructorFunction.prototype)
  23                                 return true;
  24                         object = object.__proto__;
  25                 }
  26         } else {
  27                 while(object != null) {
  28                         if( object instanceof constructorFunction )
  29                                 return true;
  30                         object = object.__proto__;
  31                 }
  32         }
  33         return false;
  34 }
  35
  36 // Top level superclass
  37 function Fieldmapper(array) {
  38         this.array = [];
  39         if(array) {
  40                 if (array.constructor == Array) {
  41                         this.array = array;
  42                 } else if ( instanceOf( array, String ) || instanceOf( array, Number ) ) {
  43
  44                         var obj = null;
  45                         if (this.cacheable) {
  46                                 try {
  47                                         obj = this.baseClass.obj_cache[this.classname][array];
  48                                 } catch (E) {};
  49                         }
  50
  51                         if (!obj) {
  52                                 obj = user_request(
  53                                         'open-ils.proxy',
  54                                         'open-ils.proxy.proxy',
  55                                         [
  56                                                 mw.G.auth_ses[0],
  57                                                 'open-ils.storage',
  58                                                 'open-ils.storage.direct.' + this.db_type + '.retrieve',
  59                                                 array
  60                                         ]
  61                                 )[0];
  62
  63                                 if (this.cacheable) {
  64                                         if (this.baseClass.obj_cache[this.classname] == null)
  65                                                 this.baseClass.obj_cache[this.classname] = {};
  66
  67                                         this.baseClass.obj_cache[this.classname][obj.id()] = obj;
  68                                 }
  69                         }
  70                         this.array = obj.array;
  71
  72                 } else {
  73                         throw new FieldmapperException( "Attempt to build fieldmapper object with something wierd");
  74                 }
  75         }
  76 }
  77 Fieldmapper.prototype.baseClass = Fieldmapper;
  78 Fieldmapper.prototype.obj_cache = {};
  79
  80 Fieldmapper.prototype.clone = function() {
  81         var obj = new this.constructor();
  82
  83         for( var i in this.array ) {
  84                 var thing = this.array[i];
  85                 if(thing == null) continue;
  86
  87                 if( thing._isfieldmapper ) {
  88                         obj.array[i] = thing.clone();
  89                 } else {
  90
  91                         if(instanceOf(thing, Array)) {
  92                                 obj.array[i] = new Array();
  93
  94                                 for( var j in thing ) {
  95
  96                                         if( thing[j]._isfieldmapper )
  97                                                 obj.array[i][j] = thing[j].clone();
  98                                         else
  99                                                 obj.array[i][j] = thing[j];
 100                                 }
 101                         } else {
 102                                 obj.array[i] = thing;
 103                         }
 104                 }
 105         }
 106         return obj;
 107 }
 108
 109 function FieldmapperException(message) {
 110         this.message = message;
 111 }
 112
 113 FieldmapperException.toString = function() {
 114         return "FieldmapperException: " + this.message + "\n";
 115
 116 }
 117
 118
 119                 <xsl:apply-templates select="opensrf:fieldmapper/opensrf:classes"/>
 120         </xsl:template>
 121
 122
 123
 124
 125
 126 <!-- sub-templates -->
 127         <xsl:template match="opensrf:fieldmapper/opensrf:classes">
 128                 <xsl:for-each select="opensrf:class">
 129                         <xsl:apply-templates select="."/>
 130                 </xsl:for-each>
 131         </xsl:template>
 132
 133
 134
 135
 136         <xsl:template match="opensrf:class">
 137                 <xsl:apply-templates select="@javascript:class"/>
 138                 <xsl:apply-templates select="opensrf:fields"/>
 139                 <xsl:apply-templates select="opensrf:links/opensrf:link[@cdbi:type='has_many']"/>
 140         </xsl:template>
 141
 142
 143
 144
 145         <xsl:template match="opensrf:fields">
 146                 <xsl:apply-templates select="opensrf:field"/>
 147         </xsl:template>
 148
 149
 150
 151
 152         <xsl:template match="opensrf:links/opensrf:link[@cdbi:type='has_many']">
 153                 <xsl:variable name="num"><xsl:number/></xsl:variable>
 154                 <xsl:variable name="source"><xsl:value-of select="@source"/></xsl:variable>
 155                 <xsl:variable name="classname"><xsl:value-of select="../../@javascript:class"/></xsl:variable>
 156
 157 // accessor for <xsl:value-of select="$classname"/>:
 158 <xsl:value-of select="$classname"/>.prototype.<xsl:value-of select="@field"/> = function () {
 159
 160         var _pos = <xsl:value-of select="$classname"/>.last_real_field + <xsl:value-of select="$num"/>;
 161
 162         if (!instanceOf(this.array[_pos], Array)) {
 163                 this.array[_pos] = [];
 164
 165         if (this.array[_pos].length == 0) {
 166                 /* get the real thing.
 167                  * search where <xsl:value-of select="$source"/>.<xsl:value-of select="//*[@id=$source]/opensrf:links/opensrf:link[@cdbi:type='has_a' and @source=$classname]/@field"/>()
 168                  * equals this.<xsl:value-of select="../../opensrf:fields/opensrf:field[@cdbi:primary='true']/@name"/>();
 169                  */
 170         }
 171
 172         return this.array[_pos];
 173 }
 174
 175         </xsl:template>
 176
 177
 178
 179
 180
 181         <xsl:template match="@javascript:class">
 182
 183 // Class definition for "<xsl:value-of select="."/>"
 184
 185 function <xsl:value-of select="."/> (array) {
 186
 187         if (!instanceOf(this, <xsl:value-of select="."/>))
 188                 return new <xsl:value-of select="."/>(array);
 189
 190         this.baseClass.call(this,array);
 191         this.classname = "<xsl:value-of select="."/>";
 192         this._isfieldmapper = true;
 193         this.uber = <xsl:value-of select="."/>.baseClass.prototype;
 194 }
 195
 196 <xsl:value-of select="."/>.prototype                    = new Fieldmapper();
 197 <xsl:value-of select="."/>.prototype.constructor        = <xsl:value-of select="."/>;
 198 <xsl:value-of select="."/>.baseClass                    = Fieldmapper;
 199 <xsl:value-of select="."/>.prototype.cachable           = true;
 200 <xsl:value-of select="."/>.prototype.fields             = [];
 201 <xsl:value-of select="."/>.last_real_field              = 2;
 202
 203 <!-- XXX This needs to come from somewhere else!!!! -->
 204 <xsl:value-of select="."/>.prototype.db_type            = "<xsl:value-of select="../cdbi:table[@rdbms='Pg']/cdbi:name"/>";
 205
 206 <xsl:value-of select="."/>.prototype.isnew = function(new_value) {
 207         if(arguments.length == 1) { this.array[0] = new_value; }
 208         return this.array[0];
 209 }
 210
 211 <xsl:value-of select="."/>.prototype.ischanged = function(new_value) {
 212         if(arguments.length == 1) { this.array[1] = new_value; }
 213         return this.array[1];
 214 }
 215
 216 <xsl:value-of select="."/>.prototype.isdeleted = function(new_value) {
 217         if(arguments.length == 1) { this.array[2] = new_value; }
 218         return this.array[2];
 219 }
 220
 221         </xsl:template>
 222
 223
 224
 225
 226
 227         <xsl:template match="opensrf:field">
 228
 229                 <xsl:variable name="num"><xsl:number/></xsl:variable>
 230                 <xsl:variable name="field_pos" select="$num + 2"/>
 231                 <xsl:variable name="last_field_pos" select="$field_pos + 1"/>
 232                 <xsl:variable name="field_name" select="@name"/>
 233
 234 // Accessor/mutator for <xsl:value-of select="../../@javascript:class"/>.<xsl:value-of select="$field_name"/>:
 235 <xsl:value-of select="../../@javascript:class"/>.last_real_field++;
 236 <xsl:value-of select="../../@javascript:class"/>.prototype.fields.push("<xsl:value-of select="$field_name"/>");
 237 <xsl:value-of select="../../@javascript:class"/>.prototype.<xsl:value-of select="$field_name"/> = function (new_value) {
 238
 239                 <xsl:choose>
 240                         <xsl:when test="../../opensrf:links/opensrf:link[@field=$field_name and @cdbi:type='has_a']">
 241                                 <xsl:variable
 242                                         name="source"
 243                                         select="../../opensrf:links/opensrf:link[@field=$field_name and @cdbi:type='has_a']/@source"/>
 244
 245         if(arguments.length == 1) { this.array[<xsl:value-of select="$field_pos"/>] = new_value; }
 246         var val = this.array[<xsl:value-of select="$field_pos"/>];
 247
 248         if (!instanceOf(this.array[<xsl:value-of select="$field_pos"/>], <xsl:value-of select="$source"/>)) {
 249                 if (this.array[<xsl:value-of select="$field_pos"/>] != null) {
 250                         this.array[<xsl:value-of select="$field_pos"/>] = new <xsl:value-of select="$source"/>(val);
 251                 }
 252         }
 253
 254         return this.array[<xsl:value-of select="$field_pos"/>];
 255                         </xsl:when>
 256
 257                         <xsl:otherwise>
 258         if(arguments.length == 1) { this.array[<xsl:value-of select="$field_pos"/>] = new_value; }
 259         return this.array[<xsl:value-of select="$field_pos"/>];
 260                         </xsl:otherwise>
 261                 </xsl:choose>
 262 }
 263         </xsl:template>
 264
 265 </xsl:stylesheet>
 266