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package FS::queue_depend;
use base qw( FS::Record );
use strict;
use FS::Record qw( dbh );
=head1 NAME
FS::queue_depend - Object methods for queue_depend records
=head1 SYNOPSIS
use FS::queue_depend;
$record = new FS::queue_depend \%hash;
$record = new FS::queue_depend { 'column' => 'value' };
$error = $record->insert;
$error = $new_record->replace($old_record);
$error = $record->delete;
$error = $record->check;
=head1 DESCRIPTION
An FS::queue_depend object represents an job dependancy. FS::queue_depend
inherits from FS::Record. The following fields are currently supported:
=over 4
=item dependnum - primary key
=item jobnum - source jobnum (see L<FS::queue>).
=item depend_jobnum - dependancy jobnum (see L<FS::queue>)
=back
The job specified by B<jobnum> depends on the job specified B<depend_jobnum> -
the B<jobnum> job will not be run until the B<depend_jobnum> job has completed
successfully (or manually removed).
=head1 METHODS
=over 4
=item new HASHREF
Creates a new dependancy. To add the dependancy to the database, see
L<"insert">.
Note that this stores the hash reference, not a distinct copy of the hash it
points to. You can ask the object for a copy with the I<hash> method.
=cut
# the new method can be inherited from FS::Record, if a table method is defined
sub table { 'queue_depend'; }
=item insert
Adds this record to the database. If there is an error, returns the error,
otherwise returns false.
=cut
# the insert method can be inherited from FS::Record
=item delete
Delete this record from the database.
=cut
# the delete method can be inherited from FS::Record
=item replace OLD_RECORD
Replaces the OLD_RECORD with this one in the database. If there is an error,
returns the error, otherwise returns false.
=cut
# the replace method can be inherited from FS::Record
=item check
Checks all fields to make sure this is a valid dependancy. If there is
an error, returns the error, otherwise returns false. Called by the insert
and replace methods.
=cut
sub check {
my $self = shift;
$self->ut_numbern('dependnum')
|| $self->ut_foreign_key('jobnum', 'queue', 'jobnum')
|| $self->ut_foreign_key('depend_jobnum', 'queue', 'jobnum')
|| $self->SUPER::check
;
}
=back
=cut
sub _upgrade_schema {
my ($class, %opts) = @_;
my $sql = '
DELETE FROM queue_depend WHERE NOT EXISTS
( SELECT 1 FROM queue WHERE queue.jobnum = queue_depend.jobnum )
';
my $sth = dbh->prepare($sql) or die dbh->errstr;
$sth->execute or die $sth->errstr;
'';
}
=head1 BUGS
=head1 SEE ALSO
L<FS::queue>, L<FS::Record>, schema.html from the base documentation.
=cut
1;
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