Michael Schout > Apache-Singleton-0.15 > Apache::Singleton

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Module Version: 0.15   Source   Latest Release: Apache-Singleton-0.16

NAME ^

Apache::Singleton - Singleton class for mod_perl

VERSION ^

version 0.15

SYNOPSIS ^

  package Printer;
  # default:
  #   Request for mod_perl env
  #   Process for non-mod_perl env
  use base qw(Apache::Singleton);

  package Printer::PerRequest;
  use base qw(Apache::Singleton::Request);

  package Printer::PerProcess;
  use base qw(Apache::Singleton::Process);

DESCRIPTION ^

Apache::Singleton works the same as Class::Singleton, but with various object lifetime (scope). See Class::Singleton first.

OBJECT LIFETIME ^

By inheriting one of the following sublasses of Apache::Singleton, you can change the scope of your object.

Request
  use base qw(Apache::Singleton::Request);

One instance for one request. Apache::Singleton will remove instance on each request. Implemented using mod_perl pnotes API. In mod_perl environment (where $ENV{MOD_PERL} is defined), this is the default scope, so inheriting from Apache::Singleton would do the same effect.

NOTE: You need PerlOptions +GlobalRequest in your apache configuration in order to use the Request lifetime method.

Process
  use base qw(Apache::Singleton::Process);

One instance for one httpd process. Implemented using package global. In non-mod_perl environment, this is the default scope, and you may notice this is the same beaviour with Class::Singleton ;)

So you can use this module safely under non-mod_perl environment.

CREDITS ^

Original idea by Matt Sergeant <matt@sergeant.org> and Perrin Harkins <perrin@elem.com>.

Initial implementation and versions 0.01 to 0.07 by Tatsuhiko Miyagawa <miyagawa@bulknews.net>.

SEE ALSO ^

Apache::Singleton::Request, Apache::Singleton::Process, Class::Singleton

SOURCE ^

The development version is on github at http://github.com/mschout/apache-singleton and may be cloned from git://github.com/mschout/apache-singleton.git

BUGS ^

Please report any bugs or feature requests to bug-apache-singleton@rt.cpan.org or through the web interface at: http://rt.cpan.org/Public/Dist/Display.html?Name=Apache-Singleton

AUTHOR ^

Michael Schout <mschout@cpan.org>

COPYRIGHT AND LICENSE ^

This software is copyright (c) 2009 by Michael Schout.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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