/usr/share/perl5/Class/DBI/Cascade/Fail.pm is in libclass-dbi-perl 3.0.17-4.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | package Class::DBI::Cascade::Fail;
=head1 NAME
Class::DBI::Cascade::Fail - Do not cascade if foreign objects exist
=head1 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.
=cut
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;
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