org.quartz.plugins.xml

Class XMLSchedulingDataProcessorPlugin

java.lang.Object

org.quartz.plugins.SchedulerPluginWithUserTransactionSupport

org.quartz.plugins.xml.XMLSchedulingDataProcessorPlugin

All Implemented Interfaces:

FileScanListener, SchedulerPlugin

public class XMLSchedulingDataProcessorPlugin
extends SchedulerPluginWithUserTransactionSupport
implements FileScanListener

This plugin loads XML file(s) to add jobs and schedule them with triggers as the scheduler is initialized, and can optionally periodically scan the file for changes.

The XML schema definition can be found here: http://www.quartz-scheduler.org/xml/job_scheduling_data_2_0.xsd

The periodically scanning of files for changes is not currently supported in a clustered environment.

If using this plugin with JobStoreCMT, be sure to set the plugin property wrapInUserTransaction to true. Also, if you have a positive scanInterval be sure to set org.quartz.scheduler.wrapJobExecutionInUserTransaction to true.

Author:

James House, Pierre Awaragi, pl47ypus

See Also:

XMLSchedulingDataProcessor

Field Summary

Fields

Modifier and Type	Field and Description
protected ClassLoadHelper	classLoadHelper

Constructor Summary

Constructors

Constructor and Description
XMLSchedulingDataProcessorPlugin()

Method Summary

Modifier and Type	Method and Description
void	fileUpdated(java.lang.String fileName)
java.lang.String	getFileNames() Comma separated list of file names (with paths) to the XML files that should be read.
long	getScanInterval() The interval (in seconds) at which to scan for changes to the file.
void	initialize(java.lang.String name, Scheduler scheduler, ClassLoadHelper schedulerFactoryClassLoadHelper) Called during creation of the Scheduler in order to give the SchedulerPlugin a chance to initialize.
boolean	isFailOnFileNotFound() Whether or not initialization of the plugin should fail (throw an exception) if the file cannot be found.
void	processFile(java.lang.String filePath)
void	setFailOnFileNotFound(boolean failOnFileNotFound) Whether or not initialization of the plugin should fail (throw an exception) if the file cannot be found.
void	setFileNames(java.lang.String fileNames) The file name (and path) to the XML file that should be read.
void	setScanInterval(long scanInterval) The interval (in seconds) at which to scan for changes to the file.
void	shutdown() Overriden to ignore wrapInUserTransaction because shutdown() does not interact with the Scheduler.
void	start(javax.transaction.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 org.quartz.plugins.SchedulerPluginWithUserTransactionSupport

getLog, getName, getScheduler, getWrapInUserTransaction, initialize, setWrapInUserTransaction, shutdown, start

Methods inherited from class java.lang.Object

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

Field Detail

classLoadHelper

protected ClassLoadHelper classLoadHelper

Constructor Detail

XMLSchedulingDataProcessorPlugin

public XMLSchedulingDataProcessorPlugin()

Method Detail

getFileNames

public java.lang.String getFileNames()

Comma separated list of file names (with paths) to the XML files that should be read.

setFileNames

public void setFileNames(java.lang.String fileNames)

The file name (and path) to the XML file that should be read.

getScanInterval

public long getScanInterval()

The interval (in seconds) at which to scan for changes to the file. If the file has been changed, it is re-loaded and parsed. The default value for the interval is 0, which disables scanning.

Returns:

Returns the scanInterval.

setScanInterval

public void setScanInterval(long scanInterval)

The interval (in seconds) at which to scan for changes to the file. If the file has been changed, it is re-loaded and parsed. The default value for the interval is 0, which disables scanning.

Parameters:

scanInterval - The scanInterval to set.

isFailOnFileNotFound

public boolean isFailOnFileNotFound()

Whether or not initialization of the plugin should fail (throw an exception) if the file cannot be found. Default is true.

setFailOnFileNotFound

public void setFailOnFileNotFound(boolean failOnFileNotFound)

Whether or not initialization of the plugin should fail (throw an exception) if the file cannot be found. Default is true.

initialize

public void initialize(java.lang.String name,
                       Scheduler scheduler,
                       ClassLoadHelper schedulerFactoryClassLoadHelper)
                throws SchedulerException

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

Specified by:

initialize in interface SchedulerPlugin

Parameters:

name - The name by which the plugin is identified.

scheduler - The scheduler to which the plugin is registered.

schedulerFactoryClassLoadHelper - The classLoadHelper the SchedulerFactory is actually using

Throws:

SchedulerConfigException - if there is an error initializing.

SchedulerException

start

public void start(javax.transaction.UserTransaction userTransaction)

Description copied from class: SchedulerPluginWithUserTransactionSupport

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.

Overrides:

start in class SchedulerPluginWithUserTransactionSupport

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

public void shutdown()

Overriden to ignore wrapInUserTransaction because shutdown() does not interact with the Scheduler.

Specified by:

shutdown in interface SchedulerPlugin

Overrides:

shutdown in class SchedulerPluginWithUserTransactionSupport

processFile

public void processFile(java.lang.String filePath)

fileUpdated

public void fileUpdated(java.lang.String fileName)

Specified by:

fileUpdated in interface FileScanListener

See Also:

FileScanListener.fileUpdated(java.lang.String)