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package Badger::Data::Facet::List::Size;
use Badger::Data::Facet::Class
version => 0.01,
type => 'list',
args => 'size';
sub validate {
my ($self, $value, $type) = @_;
return scalar(@$value) == $self->{ size }
? $value
: $self->invalid_msg(
wrong_size => $type || 'List', $self->{ size }, scalar(@$value)
);
}
1;
__END__
=head1 NAME
Badger::Data::Facet::List::Size - validation facet for the size of a list
=head1 DESCRIPTION
This module implements a validation facets that checks the size of a list.
=head1 METHODS
This module implement the following method in addition to those inherited from
the L<Badger::Data::Facet::List>, L<Badger::Data::Facet> and L<Badger::Base>
base classes.
=head2 validate($list_ref, $type)
This method validates that the size of the list (i.e. number of elements)
passed by reference as the first argument equals to the pre-defined size.
=head1 AUTHOR
Andy Wardley L<http://wardley.org/>
=head1 COPYRIGHT
Copyright (C) 2008-2012 Andy Wardley. All Rights Reserved.
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=head1 SEE ALSO
L<Badger::Base>,
L<Badger::Data::Facet>,
L<Badger::Data::Facet::List>.
=cut
# Local Variables:
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# End:
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