org.quartz.spi

Interface SchedulerPlugin

All Known Implementing Classes:

JobInterruptMonitorPlugin, LoggingJobHistoryPlugin, LoggingTriggerHistoryPlugin, SchedulerPluginWithUserTransactionSupport, ShutdownHookPlugin, XMLSchedulingDataProcessorPlugin

public interface SchedulerPlugin

Provides an interface for a class to become a "plugin" to Quartz.

Plugins can do virtually anything you wish, though the most interesting ones will obviously interact with the scheduler in some way - either actively: by invoking actions on the scheduler, or passively: by being a JobListener, TriggerListener, and/or SchedulerListener.

If you use StdSchedulerFactory to initialize your Scheduler, it can also create and initialize your plugins - look at the configuration docs for details.

If you need direct access your plugin, you can have it explicitly put a reference to itself in the Scheduler's SchedulerContext as part of its #initialize(String, Scheduler) method.

Author:

James House

Method Summary

Methods

Modifier and Type	Method and Description
void	initialize(String name, Scheduler scheduler, ClassLoadHelper loadHelper) Called during creation of the Scheduler in order to give the SchedulerPlugin a chance to initialize.
void	shutdown() Called in order to inform the SchedulerPlugin that it should free up all of it's resources because the scheduler is shutting down.
void	start() Called when the associated Scheduler is started, in order to let the plug-in know it can now make calls into the scheduler if it needs to.

Method Detail

initialize

void initialize(String name,
              Scheduler scheduler,
              ClassLoadHelper loadHelper)
                throws SchedulerException

Called during creation of the Scheduler in order to give the SchedulerPlugin a chance to initialize.

At this point, the Scheduler's JobStore is not yet initialized.

If you need direct access your plugin, for example during Job execution, you can have this method explicitly put a reference to this plugin in the Scheduler's SchedulerContext.

Parameters:

name - The name by which the plugin is identified.

scheduler - The scheduler to which the plugin is registered.

loadHelper - The classLoadHelper the SchedulerFactory is actually using

Throws:

SchedulerConfigException - if there is an error initializing.

SchedulerException

start

void start()

Called when the associated Scheduler is started, in order to let the plug-in know it can now make calls into the scheduler if it needs to.

shutdown

void shutdown()

Called in order to inform the SchedulerPlugin that it should free up all of it's resources because the scheduler is shutting down.