Class::DBI::Cascade::Fail - Do not cascade if foreign objects exist

Class-DBI documentation

Contained in the Class-DBI distribution.

Index

NAME
DESCRIPTION

Code Index:

package Class::DBI::Cascade::Fail
- cascade
EOF

NAME

Class::DBI::Cascade::Fail - Do not cascade if foreign objects exist

DESCRIPTION

This is a Cascading Delete strategy that will throw an error if any object about to be deleted still has any other objects pointing at it.

Class-DBI documentation

Contained in the Class-DBI distribution.

package Class::DBI::Cascade::Fail;

use strict;
use warnings;

use base 'Class::DBI::Cascade::None';

sub cascade {
	my ($self, $obj) = @_;
	my $refs = $self->foreign_for($obj)->count or return;
	$self->{_rel}->foreign_class->_croak(
		"$refs objects still refer to $obj. Deletion failed");
}

1;