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lib/Alzabo/Runtime/Column.pm  view on Meta::CPAN

package Alzabo::Runtime::Column;

use strict;
use vars qw($VERSION);

use Alzabo::Runtime;
use Params::Validate qw( :all );
Params::Validate::validation_options( on_fail => sub { Alzabo::Exception::Params->throw( error => join '', @_ ) } );

use base qw(Alzabo::Column);

$VERSION = 2.0;

sub alias_clone
{
    my $self = shift;

    my %p = validate( @_, { table => { isa => 'Alzabo::Runtime::Table' },
                          } );

    my $clone;

    %$clone = %$self;
    $clone->{table} = $p{table};

    bless $clone, ref $self;

    return $clone;
}

sub alias
{
    my $self = shift;
    my %p = validate( @_, { as => { type => SCALAR } } );

    my $clone;
    %$clone = %$self;

    bless $clone, ref $self;

    $clone->{alias_name} = $p{as};
    $clone->{real_column} = $self;

    return $clone;
}

sub alias_name
{
    return $_[0]->{alias_name} || $_[0]->{name};
}

1;

__END__

=head1 NAME

Alzabo::Runtime::Column - Column objects

=head1 SYNOPSIS

  use Alzabo::Runtime::Column;

=for pod_merge DESCRIPTION

=head1 INHERITS FROM

C<Alzabo::Column>