######################################################################
#
# EPrints::MetaField::Counter;
#
######################################################################
#
#
######################################################################

=pod

=head1 NAME

B<EPrints::MetaField::Counter> - an incrementing integer

=head1 DESCRIPTION

This field represents an integer whose default value is an incrementing integer (1,2,3 ...).

=over 4

=cut

package EPrints::MetaField::Counter;

use strict;
use warnings;

use EPrints::MetaField::Int;
our @ISA = qw( EPrints::MetaField::Int );

sub get_property_defaults
{
	my( $self ) = @_;
	my %defaults = $self->SUPER::get_property_defaults;
	$defaults{sql_counter} = $EPrints::MetaField::REQUIRED;
	return %defaults;
}

sub get_default_value
{
	my( $self, $session ) = @_;

	return $session->get_database->counter_next( $self->get_property( "sql_counter" ) );
}

######################################################################
1;

=head1 COPYRIGHT

=for COPYRIGHT BEGIN

Copyright 2022 University of Southampton.
EPrints 3.4 is supplied by EPrints Services.

http://www.eprints.org/eprints-3.4/

=for COPYRIGHT END

=for LICENSE BEGIN

This file is part of EPrints 3.4 L<http://www.eprints.org/>.

EPrints 3.4 and this file are released under the terms of the
GNU Lesser General Public License version 3 as published by
the Free Software Foundation unless otherwise stated.

EPrints 3.4 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 EPrints 3.4.
If not, see L<http://www.gnu.org/licenses/>.

=for LICENSE END