add overload (stringification) to Column, setup some defaults and make some attrs...

[dbsrgits/SQL-Translator-2.0-ish.git] / lib / SQL / Translator / Object / Column.pm

use MooseX::Declare;
class SQL::Translator::Object::Column extends SQL::Translator::Object is dirty {
    use MooseX::Types::Moose qw(Bool Int Maybe ScalarRef Str);
    use MooseX::MultiMethods;
    use SQL::Translator::Types qw(Bit ColumnSize Constraint Table Trigger);
    clean;

    use overload
        '""'     => sub { shift->name },
        'bool'   => sub { $_[0]->name || $_[0] },
        fallback => 1,
    ;

    has 'table' => (
        is => 'rw',
        isa => Table,
        weak_ref => 1,
    );
    
    has 'name' => (
        is => 'rw',
        isa => Str,
        required => 1,
        trigger => sub { die "Cannot use '' as a column name" if $_[1] eq '' }
    );
    
    has 'data_type' => (
        is => 'rw',
        isa => Str,
        required => 1,
        default => '',
    );

    has 'sql_data_type' => (
        is => 'rw',
        isa => Int,
        required => 1,
        default => 0
    );
    
    has 'size' => (
        is => 'rw',
        isa => ColumnSize,
        coerce => 1,
        auto_deref => 1,
        default => sub { [ 0 ] },
    );
    
    has 'is_nullable' => (
        is => 'rw',
        isa => Bit,
        required => 1,
        default => 1
    );
    
    has 'default_value' => (
        is => 'rw',
        isa => Maybe[ScalarRef|Str],
    );

    has 'is_auto_increment' => (
        is => 'rw',
        isa => Bit,
        required => 1,
        coerce => 1,
        default => 0
    );

    has 'is_primary_key' => (
        is => 'rw',
        isa => Bool,
        default => 0
    );

    has 'is_foreign_key' => (
        is => 'rw',
        isa => Bool,
        default => 0
    );

    has 'foreign_key_reference' => (
         is => 'rw',
         isa => Constraint,
    );
    
    has 'trigger' => (
        is => 'rw',
        isa => Trigger,
    );

    around size(@args) {
        $self->$orig(@args) if @args;
        my @sizes = $self->$orig;
        return wantarray ? @sizes
                         : join ',', @sizes;
    }

    method full_name { $self->table->name . '.' . $self->name }
    method schema { $self->table->schema }

    method order { }
    method is_unique { }

    before name($name?) { die "Can't use column name $name" if $name && $self->table->exists_column($name) && $name ne $self->name; }
}