org.quartz.plugins

Class SchedulerPluginWithUserTransactionSupport

java.lang.Object

org.quartz.plugins.SchedulerPluginWithUserTransactionSupport

All Implemented Interfaces:

SchedulerPlugin

Direct Known Subclasses:

XMLSchedulingDataProcessorPlugin

public abstract class SchedulerPluginWithUserTransactionSupport
extends Object
implements SchedulerPlugin

Base class for plugins that wish to support having their start and shutdown methods run within a UserTransaction. This is often necessary if using the JobStoreCMT and the plugin interacts with jobs/triggers.

The subclass should implement start(UserTransaction) and shutdown(UserTransaction). The UserTransaction will be non-null if property wrapInUserTransaction is set to true.

For convenience, this base class also provides an initialize() implementation which saves the scheduler and plugin name, as well as getLog() for logging.

Constructor Summary

Constructors

Constructor and Description
SchedulerPluginWithUserTransactionSupport()

Method Summary

Modifier and Type	Method and Description
protected org.slf4j.Logger	getLog() Get the commons Logger for this class.
protected String	getName() Get the name of this plugin.
protected Scheduler	getScheduler() Get this plugin's Scheduler.
boolean	getWrapInUserTransaction() Wrap the start() and shutdown() methods in a UserTransaction.
void	initialize(String pname, Scheduler sched)
void	setWrapInUserTransaction(boolean wrapInUserTransaction) Wrap the start() and shutdown() methods in a UserTransaction.
void	shutdown() Based on the value of wrapInUserTransaction, wraps the call to shutdown(UserTransaction) in a UserTransaction.
protected void	shutdown(UserTransaction userTransaction) 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() Based on the value of wrapInUserTransaction, wraps the call to start(UserTransaction) in a UserTransaction.
protected void	start(UserTransaction userTransaction) 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.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.quartz.spi.SchedulerPlugin

initialize

Constructor Detail

SchedulerPluginWithUserTransactionSupport

public SchedulerPluginWithUserTransactionSupport()

Method Detail

start

protected void start(UserTransaction userTransaction)

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.

If UserTransaction is not null, the plugin can call setRollbackOnly() on it to signal that the wrapped transaction should rollback.

Parameters:

userTransaction - The UserTranaction object used to provide a transaction around the start() operation. It will be null if wrapInUserTransaction is false or if the transaction failed to be started.

shutdown

protected void shutdown(UserTransaction userTransaction)

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

If UserTransaction is not null, the plugin can call setRollbackOnly() on it to signal that the wrapped transaction should rollback.

Parameters:

userTransaction - The UserTranaction object used to provide a transaction around the shutdown() operation. It will be null if wrapInUserTransaction is false or if the transaction failed to be started.

getLog

protected org.slf4j.Logger getLog()

Get the commons Logger for this class.

getName

protected String getName()

Get the name of this plugin. Set as part of initialize().

getScheduler

protected Scheduler getScheduler()

Get this plugin's Scheduler. Set as part of initialize().

initialize

public void initialize(String pname,
                       Scheduler sched)
                throws SchedulerException

Throws:

SchedulerException

getWrapInUserTransaction

public boolean getWrapInUserTransaction()

Wrap the start() and shutdown() methods in a UserTransaction. This is necessary for some plugins if using the JobStoreCMT.

setWrapInUserTransaction

public void setWrapInUserTransaction(boolean wrapInUserTransaction)

Wrap the start() and shutdown() methods in a UserTransaction. This is necessary for some plugins if using the JobStoreCMT.

start

public void start()

Based on the value of wrapInUserTransaction, wraps the call to start(UserTransaction) in a UserTransaction.

Specified by:

start in interface SchedulerPlugin

shutdown

public void shutdown()

Based on the value of wrapInUserTransaction, wraps the call to shutdown(UserTransaction) in a UserTransaction.

Specified by:

shutdown in interface SchedulerPlugin