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package OPTIMADE::Filter::Negation;
use strict;
use warnings;
use parent 'OPTIMADE::Filter::Modifiable';
our $VERSION = '0.11.0'; # VERSION
sub new {
my( $class, $inner ) = @_;
return bless { inner => $inner }, $class;
}
sub inner
{
my( $self, $inner ) = @_;
my $previous_inner = $self->{inner};
$self->{inner} = $inner if defined $inner;
return $previous_inner;
}
sub to_filter
{
my( $self ) = @_;
$self->validate;
return '(NOT ' . $self->inner->to_filter . ')';
}
sub to_SQL
{
my( $self, $options ) = @_;
$self->validate;
my( $sql, $values ) = $self->inner->to_SQL( $options );
if( wantarray ) {
return ( "NOT ($sql)", $values );
} else {
return "NOT ($sql)";
}
}
sub modify
{
my $self = shift;
my $code = shift;
$self->inner( $self->inner->modify( $code, @_ ) );
return $code->( $self, @_ );
}
sub validate
{
my $self = shift;
die 'inner undefined for OPTIMADE::Filter::Negation' if !$self->inner;
}
1;
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