53 lines
1.4 KiB
Perl
53 lines
1.4 KiB
Perl
package Koha::QueryParser::Driver::PQF::query_plan;
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use base 'OpenILS::QueryParser::query_plan';
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use strict;
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use warnings;
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=head1 NAME
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Koha::QueryParser::Driver::PQF::query_plan - query_plan subclass for PQF driver
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=head1 FUNCTIONS
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=head2 Koha::QueryParser::Driver::PQF::query_plan::target_syntax
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my $pqf = $query_plan->target_syntax($server);
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Transforms an OpenILS::QueryParser::query_plan object into PQF. Do not use directly.
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=cut
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sub target_syntax {
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my ($self, $server) = @_;
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my $pqf = '';
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my $node_pqf;
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my $node_count = 0;
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for my $node ( @{$self->query_nodes} ) {
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if (ref($node)) {
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$node_pqf = $node->target_syntax($server);
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$node_count++ if $node_pqf;
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$pqf .= $node_pqf;
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}
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}
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$pqf = ($self->joiner eq '|' ? ' @or ' : ' @and ') x ($node_count - 1) . $pqf;
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$node_count = ($node_count ? '1' : '0');
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for my $node ( @{$self->filters} ) {
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if (ref($node)) {
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$node_pqf = $node->target_syntax($server);
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$node_count++ if $node_pqf;
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$pqf .= $node_pqf;
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}
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}
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$pqf = ($self->joiner eq '|' ? ' @or ' : ' @and ') x ($node_count - 1) . $pqf;
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foreach my $modifier ( @{$self->modifiers} ) {
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my $modifierpqf = $modifier->target_syntax($server, $self);
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$pqf = $modifierpqf . ' ' . $pqf if $modifierpqf;
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}
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return ($self->negate ? '@not @attr 1=_ALLRECORDS @attr 2=103 "" ' : '') . $pqf;
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}
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1;
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