adding "post_filter" based class-search method

git-svn-id: svn://svn.open-ils.org/ILS/trunk@1989 dcc99617-32d9-48b4-a31d-7c20da2025e4

diff --git a/Open-ILS/src/perlmods/OpenILS/Application/Storage/Publisher/metabib.pm b/Open-ILS/src/perlmods/OpenILS/Application/Storage/Publisher/metabib.pm
index f262aa5..c423d73 100644 (file)
--- a/Open-ILS/src/perlmods/OpenILS/Application/Storage/Publisher/metabib.pm
+++ b/Open-ILS/src/perlmods/OpenILS/Application/Storage/Publisher/metabib.pm
@@ -765,9 +765,6 @@ for my $class ( qw/title author subject keyword series/ ) {
 }
 
 
-
-
-
 # XXX factored most of the PG dependant stuff out of here... need to find a way to do "dependants".
 sub new_search_class_fts {
        my $self = shift;
@@ -934,6 +931,161 @@ for my $class ( qw/title author subject keyword series/ ) {
 }
 
 
+
+
+# XXX factored most of the PG dependant stuff out of here... need to find a way to do "dependants".
+sub postfilter_search_class_fts {
+       my $self = shift;
+       my $client = shift;
+       my %args = @_;
+       
+       my $term = $args{term};
+       my $ou = $args{org_unit};
+       my $ou_type = $args{depth};
+       my $limit = $args{limit};
+       my $offset = $args{offset} || 0;
+
+       my $outer_limit = 1000;
+
+       my $limit_clause = '';
+       my $offset_clause = '';
+
+       $limit_clause = "LIMIT $outer_limit";
+       $offset_clause = "OFFSET $offset" if (defined $offset and int($offset) > 0);
+
+       my (@types,@forms);
+       my ($t_filter, $f_filter) = ('','');
+
+       if ($args{format}) {
+               my ($t, $f) = split '-', $args{format};
+               @types = split '', $t;
+               @forms = split '', $f;
+               if (@types) {
+                       $t_filter = ' AND rd.item_type IN ('.join(',',map{'?'}@types).')';
+               }
+
+               if (@forms) {
+                       $f_filter .= ' AND rd.item_form IN ('.join(',',map{'?'}@forms).')';
+               }
+       }
+
+
+
+       my $descendants = defined($ou_type) ?
+                               "actor.org_unit_descendants($ou, $ou_type)" :
+                               "actor.org_unit_descendants($ou)";
+
+       my $class = $self->{cdbi};
+       my $search_table = $class->table;
+
+       my $metabib_record_descriptor = metabib::record_descriptor->table;
+       my $metabib_metarecord = metabib::metarecord->table;
+       my $metabib_metarecord_source_map_table = metabib::metarecord_source_map->table;
+       my $asset_call_number_table = asset::call_number->table;
+       my $asset_copy_table = asset::copy->table;
+       my $cs_table = config::copy_status->table;
+       my $cl_table = asset::copy_location->table;
+
+       my ($index_col) = $class->columns('FTS');
+       $index_col ||= 'value';
+
+       my $fts = OpenILS::Application::Storage::FTS->compile($term, 'f.value', "f.$index_col");
+
+       my $fts_where = $fts->sql_where_clause;
+       my @fts_ranks = $fts->fts_rank;
+
+       my $rank = join(' + ', @fts_ranks);
+
+       my $select = <<"        SQL";
+               SELECT  m.metarecord,
+                       (SUM(   $rank
+                               * CASE WHEN f.value ILIKE ? THEN 1.2 ELSE 1 END -- phrase order
+                               * CASE WHEN f.value ILIKE ? THEN 1.5 ELSE 1 END -- first word match
+                               * CASE WHEN f.value ~* ? THEN 2 ELSE 1 END -- only word match
+                       )/COUNT(m.source)),
+                       CASE WHEN COUNT(DISTINCT rd.record) = 1 THEN MIN(m.source) ELSE 0 END
+               FROM    $search_table f,
+                       $metabib_metarecord_source_map_table m,
+                       $metabib_metarecord_source_map_table mr,
+                       $metabib_record_descriptor rd
+               WHERE   $fts_where
+                       AND m.source = f.source
+                       AND m.metarecord = mr.metarecord
+                       AND rd.record = m.source
+                       $t_filter
+                       $f_filter
+               GROUP BY m.metarecord
+               ORDER BY 2 DESC, MIN(COALESCE(CHAR_LENGTH(f.value),1))
+               LIMIT 10000
+       SQL
+
+       if ($self->api_name !~ /staff/o) {
+               $select = <<"           SQL";
+
+                       SELECT  DISTINCT s.*
+                         FROM  $asset_call_number_table cn,
+                               $metabib_metarecord_source_map_table mr,
+                               $asset_copy_table cp,
+                               $cs_table cs,
+                               $cl_table cl,
+                               $descendants d,
+                               ($select) s
+                         WHERE mr.metarecord = s.metarecord
+                               AND cn.record = mr.source
+                               AND cp.status = cs.id
+                               AND cp.location = cl.id
+                               AND cn.owning_lib = d.id
+                               AND cp.call_number = cn.id
+                               AND cp.opac_visible IS TRUE
+                               AND cs.holdable IS TRUE
+                               AND cl.opac_visible IS TRUE
+                         ORDER BY 2 DESC
+               SQL
+       }
+
+
+       $log->debug("Field Search SQL :: [$select]",DEBUG);
+
+       my $SQLstring = join('%',$fts->words);
+       my $REstring = join('\\s+',$fts->words);
+       my $first_word = ($fts->words)[0].'%';
+       my $recs = $class->db_Main->selectall_arrayref(
+                       $select, {},
+                       '%'.lc($SQLstring).'%',                 # phrase order match
+                       lc($first_word),                        # first word match
+                       '^\\s*'.lc($REstring).'\\s*/?\s*$',     # full exact match
+                       @types, @forms );
+       
+       $log->debug("Search yielded ".scalar(@$recs)." results.",DEBUG);
+
+       my $count = scalar(@$recs);
+       for my $rec (@$recs[$offset .. $offset + $limit - 1]) {
+               my ($mrid,$rank,$skip) = @$rec;
+               $client->respond( [$mrid, sprintf('%0.3f',$rank), $skip, $count] );
+       }
+       return undef;
+}
+
+for my $class ( qw/title author subject keyword series/ ) {
+       __PACKAGE__->register_method(
+               api_name        => "open-ils.storage.metabib.$class.post_filter.search_fts.metarecord",
+               method          => 'postfilter_search_class_fts',
+               api_level       => 1,
+               stream          => 1,
+               cdbi            => "metabib::${class}_field_entry",
+               cachable        => 1,
+       );
+       __PACKAGE__->register_method(
+               api_name        => "open-ils.storage.metabib.$class.post_filter.search_fts.metarecord.staff",
+               method          => 'postfilter_search_class_fts',
+               api_level       => 1,
+               stream          => 1,
+               cdbi            => "metabib::${class}_field_entry",
+               cachable        => 1,
+       );
+}
+
+
 my $_cdbi = {  title   => "metabib::title_field_entry",
                author  => "metabib::author_field_entry",
                subject => "metabib::subject_field_entry",