POE::Component::Schedule(3)

NAME
POE::Component::Schedule - Schedule POE events using DateTime::Set iterators

SYNOPSIS
    use POE qw(Component::Schedule);
    use DateTime::Set;

    POE::Session->create(
        inline_states => {
            _start => sub {
                $_[HEAP]{sched} = POE::Component::Schedule->add(
                    $_[SESSION], Tick => DateTime::Set->from_recurrence(
                        after      => DateTime->now,
                        before     => DateTime->now->add(seconds => 3),
                        recurrence => sub {
                            return $_[0]->truncate( to => 'second' )->add( seconds => 1 )
                        },
                    ),
                );
            },
            Tick => sub {
                print 'tick ', scalar localtime, "\n";
            },
            remove_sched => sub {
                # Three ways to remove a schedule
                # The first one is only for API compatibility with POE::Component::Cron
                $_[HEAP]{sched}->delete;
                $_[HEAP]{sched} = undef;
                delete $_[HEAP]{sched};
            },
            _stop => sub {
                print "_stop\n";
            },
        },
    );

    POE::Kernel->run();

DESCRIPTION
This component encapsulates a session that sends events to client sessions on a schedule as defined by a DateTime::Set iterator.

POE::Component::Schedule METHODS

  spawn(Alias => name)
Start up the PoCo::Schedule background session with the given alias. Returns the back-end session handle.

No need to call this in normal use, add() and new() all crank one of these up if it is needed.

  add($session, $event_name, $iterator, @event_args)
    my $sched = POE::Component::Schedule->add(
        $session,
        $event_name,
        $DateTime_Set_iterator,
        @event_args
    );

Add a set of events to the scheduler.

Returns a schedule handle. The event is automatically deleted when the handle is not referenced anymore.

  new($session, $event_name, $iterator, @event_args)
new() is an alias for add().

SCHEDULE HANDLE METHODS

  delete()
Removes a schedule using the handle returned from add() or new().

DEPRECATED: Schedules are now automatically deleted when they are not referenced anymore. So just setting the container variable to "undef" will delete the schedule.

SEE ALSO
POE, DateTime::Set, POE::Component::Cron.

SUPPORT
You can look for information at:

•   RT: CPAN's request tracker

    <http://rt.cpan.org/NoAuth/Bugs.html?Dist=POE-Component-Schedule>: post bug report there.

•   CPAN Ratings

    <http://cpanratings.perl.org/p/POE-Component-Schedule>: if you use this distibution, please add comments on your experience for other users.

•   Search CPAN

    <http://search.cpan.org/dist/POE-Component-Schedule/>

•   AnnoCPAN: Annotated CPAN documentation

    <http://annocpan.org/dist/POE-Component-Schedule>

ACKNOWLEDGMENT & HISTORY
This module was a friendly fork of POE::Component::Cron to extract the generic parts and isolate the Cron specific code in order to reduce dependencies on other CPAN modules.

See <https://rt.cpan.org/Ticket/Display.html?id=44442>.

The orignal author of POE::Component::Cron is Chris Fedde.

POE::Component::Cron is now implemented as a class that inherits from POE::Component::Schedule.

Most of the POE::Component::Schedule internals have since been rewritten in 0.91_01 and we have now a complete test suite.

AUTHORS

Olivier Mengué, "dolmen@cpan.org"
Chris Fedde, "cfedde@cpan.org"

COPYRIGHT AND LICENSE

Copyright © 2009-2010 Olivier Mengué.
Copyright © 2007-2008 Chris Fedde.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.3 or, at your option, any later version of Perl 5 you may have available.