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|
=head1 NAME
Cache::Null::Entry - An entry in the Null implementation of Cache
=head1 SYNOPSIS
See 'Cache::Entry' for a synopsis.
=head1 DESCRIPTION
This module implements a version of Cache::Entry for the Cache::Null variant
of Cache. It should not be created or used directly, please see
'Cache::Null' or 'Cache::Entry' instead.
=cut
package Cache::Null::Entry;
require 5.006;
use strict;
use warnings;
use Cache::IOString;
use base qw(Cache::Entry);
use fields qw();
our $VERSION = '2.11';
sub new {
my Cache::Null::Entry $self = shift;
$self = fields::new($self) unless ref $self;
$self->SUPER::new(@_);
return $self;
}
sub exists {
#my Cache::Null::Entry $self = shift;
return 0;
}
sub set {
#my Cache::Null::Entry $self = shift;
return;
}
sub get {
#my Cache::Null::Entry $self = shift;
return undef;
}
sub size {
#my Cache::Null::Entry $self = shift;
return undef;
}
sub remove {
#my Cache::Null::Entry $self = shift;
return;
}
sub expiry {
#my Cache::Null::Entry $self = shift;
return undef;
}
sub set_expiry {
#my Cache::Null::Entry $self = shift;
return;
}
sub _handle {
my Cache::Null::Entry $self = shift;
my ($mode) = @_;
# return undef unless writing - otherwise return a dummy handle
return undef unless $mode =~ />|\+/;
my $data = '';
return Cache::IOString->new(\$data, $mode);
}
sub validity {
#my Cache::Null::Entry $self = shift;
return undef;
}
sub set_validity {
#my Cache::Null::Entry $self = shift;
return;
}
1;
__END__
=head1 SEE ALSO
Cache::Entry, Cache::Null
=head1 AUTHOR
Chris Leishman <chris@leishman.org>
Based on work by DeWitt Clinton <dewitt@unto.net>
=head1 COPYRIGHT
Copyright (C) 2003-2006 Chris Leishman. All Rights Reserved.
This module is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND,
either expressed or implied. This program is free software; you can
redistribute or modify it under the same terms as Perl itself.
$Id: Entry.pm,v 1.5 2006/01/31 15:23:58 caleishm Exp $
=cut
|
