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#-*- perl -*-
#
# Copyright (C) 2003 Ken'ichi Fukamachi
# All rights reserved. This program is free software; you can
# redistribute it and/or modify it under the same terms as Perl itself.
#
# $FML: Journal.pm,v 1.3 2003/12/30 03:47:54 fukachan Exp $
#
package FML::Cache::Journal;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK $AUTOLOAD);
use Carp;
=head1 NAME
FML::Cache::Journal - interface into Tie::JournaledDir
=head1 SYNOPSIS
=head1 DESCRIPTION
=head1 METHODS
=head2 new($curproc)
=head2 open($cache_dir, $class)
=head2 close()
=cut
# Descriptions: constructor.
# Arguments: OBJ($self) OBJ($curproc)
# Side Effects: create object
# Return Value: OBJ
sub new
{
my ($self, $curproc) = @_;
my ($type) = ref($self) || $self;
my $me = { _curproc => $curproc };
return bless $me, $type;
}
# Descriptions: open database by Tie::JournaledDir.
# Arguments: OBJ($self) STR($cache_dir) STR($class)
# Side Effects: open database, mkdir if needed
# Return Value: HASH_REF to dabase
sub open
{
my ($self, $cache_dir, $class) = @_;
my $curproc = $self->{ _curproc };
my $config = $curproc->config();
my $mode = $config->{ directory_private_mode } || 0700;
my (%db) = ();
use File::Spec;
my $dir = File::Spec->catfile($cache_dir, $class);
unless (-d $dir) {
$curproc->mkdir($dir, $mode);
}
use Tie::JournaledDir;
tie %db, 'Tie::JournaledDir', { dir => $dir };
$self->{ _db } = \%db;
return \%db;
}
# Descriptions: close database.
# Arguments: OBJ($self)
# Side Effects: none
# Return Value: none
sub close
{
my ($self) = @_;
my $db = $self->{ _db };
untie %$db;
}
=head1 CODING STYLE
See C<http://www.fml.org/software/FNF/> on fml coding style guide.
=head1 AUTHOR
Ken'ichi Fukamachi
=head1 COPYRIGHT
Copyright (C) 2003 Ken'ichi Fukamachi
All rights reserved. This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.
=head1 HISTORY
FML::Cache::Journal appeared in fml8 mailing list driver package.
See C<http://www.fml.org/> for more details.
=cut
1;
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