1 package Koha::QueryParser::Driver::PQF::query_plan;
3 # This file is part of Koha.
5 # Copyright 2012 C & P Bibliography Services
7 # Koha is free software; you can redistribute it and/or modify it
8 # under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # Koha is distributed in the hope that it will be useful, but
13 # WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
20 use base 'OpenILS::QueryParser::query_plan';
27 Koha::QueryParser::Driver::PQF::query_plan - query_plan subclass for PQF driver
31 =head2 Koha::QueryParser::Driver::PQF::query_plan::target_syntax
33 my $pqf = $query_plan->target_syntax($server);
35 Transforms an OpenILS::QueryParser::query_plan object into PQF. Do not use directly.
40 my ($self, $server) = @_;
45 for my $node ( @{$self->query_nodes} ) {
48 $node_pqf = $node->target_syntax($server);
49 $node_count++ if $node_pqf;
53 $pqf = ($self->joiner eq '|' ? ' @or ' : ' @and ') x ($node_count - 1) . $pqf;
54 $node_count = ($node_count ? '1' : '0');
55 for my $node ( @{$self->filters} ) {
57 $node_pqf = $node->target_syntax($server);
58 $node_count++ if $node_pqf;
62 $pqf = ($self->joiner eq '|' ? ' @or ' : ' @and ') x ($node_count - 1) . $pqf;
63 foreach my $modifier ( @{$self->modifiers} ) {
64 my $modifierpqf = $modifier->target_syntax($server, $self);
65 $pqf = $modifierpqf . ' ' . $pqf if $modifierpqf;
67 return ($self->negate ? '@not @attr 1=_ALLRECORDS @attr 2=103 "" ' : '') . $pqf;