#
# DESCRIPTION
#   PerlORM - Object relational mapper (ORM) for Perl. PerlORM is Perl
#   library that implements object-relational mapping. Its features are
#   much similar to those of Java's Hibernate library, but interface is
#   much different and easier to use.
#
# AUTHOR
#   Alexey V. Akimov <akimov_alexey@sourceforge.net>
#
# COPYRIGHT
#   Copyright (C) 2005-2006 Alexey V. Akimov
#
#   This library is free software; you can redistribute it and/or
#   modify it under the terms of the GNU Lesser General Public
#   License as published by the Free Software Foundation; either
#   version 2.1 of the License, or (at your option) any later version.
#   
#   This library is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#   Lesser General Public License for more details.
#   
#   You should have received a copy of the GNU Lesser General Public
#   License along with this library; if not, write to the Free Software
#   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#

package ORM::Filter;

$VERSION=0.8;

use ORM;
use overload 'fallback' => 1;
use base 'ORM::Expr';

##
## SUBROUTINES
##

sub scalar2sql
{
    my $class  = shift;
    my $scalar = shift;
    my $tjoin  = shift;
    my $ident  = shift;

    return
        ref $scalar
            ? $scalar->_sql_str( tjoin=>$tjoin, ident=>$ident )
            : ( defined $scalar ? $tjoin->class->ORM::qc( $scalar ) : 'NULL' );
}