package Search::Query::Dialect::Native;
use Moo;
extends 'Search::Query::Dialect';
use Carp;
use Data::Dump qw( dump );
our $VERSION = '0.304';
=head1 NAME
Search::Query::Dialect::Native - the default query dialect
=head1 SYNOPSIS
my $query = Search::Query->parser->parse('foo');
print $query;
=head1 DESCRIPTION
Search::Query::Dialect::Native is the default query dialect for Query
objects returned by a Search::Query::Parser instance.
=head1 METHODS
This class is a subclass of Search::Query::Dialect. Only new or overridden
methods are documented here.
=head2 stringify
Returns the Query object as a normalized string.
=cut
sub stringify {
my $self = shift;
my $tree = shift || $self;
my $no_prefix = shift || 0;
my @q;
foreach my $prefix ( '+', '', '-' ) {
next unless exists $tree->{$prefix};
for my $clause ( @{ $tree->{$prefix} } ) {
push @q,
( $no_prefix ? '' : $prefix )
. $self->stringify_clause($clause);
}
}
return join " ", @q;
}
=head2 stringify_clause( I<leaf> )
Called by stringify() to handle each Clause in the Query tree.
=cut
sub stringify_clause {
my $self = shift;
my $clause = shift;
if ( $clause->{op} eq '()' ) {
if ( $clause->has_children and $clause->has_children == 1 ) {
return $self->stringify( $clause->{value}, 1 );
}
else {
return "(" . $self->stringify( $clause->{value} ) . ")";
}
}
my $quote = $clause->quote || "";
my $value = $clause->value;
my $proximity = $clause->proximity || '';
if ($proximity) {
$proximity = '~' . $proximity;
}
# ranges
if ( ref $value eq 'ARRAY' ) {
if ( $value->[0] =~ m/[a-z]/i or $value->[1] =~ m/[a-z]/i ) {
$value = join( qq/$quote$clause->{op}$quote/,
( $value->[0], $value->[1] ) );
}
else {
$value = join( qq/$quote $quote/, $value->[0] .. $value->[1] );
}
if ( $clause->{op} eq '!..' ) {
return join( '',
( defined $clause->{field} ? $clause->{field} : "" ),
'!=', '(', $quote, $value, $quote, ')' );
}
elsif ( $clause->{op} eq '..' ) {
return join( '',
( defined $clause->{field} ? $clause->{field} : "" ),
'=', '(', $quote, $value, $quote, ')' );
}
}
# NULL query
elsif ( defined $clause->{field} and !defined $value ) {
return sprintf( "%s %s NULL",
$clause->{field}, ( $clause->{op} eq '=' ? 'is' : 'is not' ) );
}
else {
return join( '',
( defined $clause->{field} ? $clause->{field} : "" ),
$clause->{op}, $quote, $value, $quote, $proximity );
}
}
1;
__END__
=head1 AUTHOR
Peter Karman, C<< <karman at cpan.org> >>
=head1 BUGS
Please report any bugs or feature requests to C<bug-search-query at rt.cpan.org>, or through
the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Search-Query>. I will be notified, and then you'll
automatically be notified of progress on your bug as I make changes.
=head1 SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Search::Query
You can also look for information at:
=over 4
=item * RT: CPAN's request tracker
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Search-Query>
=item * AnnoCPAN: Annotated CPAN documentation
L<http://annocpan.org/dist/Search-Query>
=item * CPAN Ratings
L<http://cpanratings.perl.org/d/Search-Query>
=item * Search CPAN
L<http://search.cpan.org/dist/Search-Query/>
=back
=head1 ACKNOWLEDGEMENTS
This module started as a fork of Search::QueryParser by
Laurent Dami.
=head1 COPYRIGHT & LICENSE
Copyright 2010 Peter Karman.
This program is free software; you can redistribute it and/or modify it
under the terms of either: the GNU General Public License as published
by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.
=cut