# Copyright (c) 2016  Timm Murray
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without 
# modification, are permitted provided that the following conditions are met:
# 
#     * Redistributions of source code must retain the above copyright notice, 
#       this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright 
#       notice, this list of conditions and the following disclaimer in the 
#       documentation and/or other materials provided with the distribution.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
# POSSIBILITY OF SUCH DAMAGE.
package SQL::Functional::FromClause;
$SQL::Functional::FromClause::VERSION = '0.2';
use strict;
use warnings;
use Moose;
use namespace::autoclean;
use SQL::Functional::Clause;
use SQL::Functional::TableClause;

with 'SQL::Functional::Clause';

has tables => (
    traits => [ 'Array' ],
    is => 'ro',
    isa => 'ArrayRef[SQL::Functional::Clause]',
    auto_deref => 1,
    required => 1,
    handles => {
        add => 'push',
    },
);


around 'add' => sub {
    my ($orig, $self, $val) = @_;

    my $clean_val = $val;
    if( (! ref($val)) || (! $val->isa( 'SQL::Functional::TableClause' )) ) {
        $clean_val = SQL::Functional::TableClause->new({
            name => $val,
        });
    }

    return $self->$orig( $clean_val );
};


sub to_string
{
    my ($self) = @_;
    return 'FROM ' . join( ', ', map { $_->to_string } $self->tables );
}


no Moose;
__PACKAGE__->meta->make_immutable;
1;
__END__

