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Java Source Code / Java Documentation » J2EE » spring framework 2.0.6 » org.springframework.scheduling.concurrent

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.springframework.scheduling.concurrent .ScheduledExecutorFactoryBean

ScheduledExecutorFactoryBean

public class ScheduledExecutorFactoryBean implements FactoryBean,BeanNameAware,InitializingBean,DisposableBean(Code)

org.springframework.beans.factory.FactoryBean that sets up a JDK 1.5 java.util.concurrent.ScheduledExecutorService (by default: java.util.concurrent.ScheduledThreadPoolExecutor as implementation) and exposes it for bean references.

Allows for registration of ScheduledExecutorTask ScheduledExecutorTasks , automatically starting the ScheduledExecutorService on initialization and cancelling it on destruction of the context. In scenarios that just require static registration of tasks at startup, there is no need to access the ScheduledExecutorService instance itself in application code.

Note that java.util.concurrent.ScheduledExecutorService uses a Runnable instance that is shared between repeated executions, in contrast to Quartz which instantiates a new Job for each execution.

This class is analogous to the org.springframework.scheduling.timer.TimerFactoryBean class for the JDK 1.3 java.util.Timer facility.
author:
   Juergen Hoeller
since:
   2.0
See Also:   ScheduledExecutorTask
See Also:   java.util.concurrent.ScheduledExecutorService
See Also:   java.util.concurrent.ScheduledThreadPoolExecutor
See Also:   org.springframework.scheduling.timer.TimerFactoryBean

Field Summary
final protected Log	logger

Method Summary
public void	afterPropertiesSet()
protected ScheduledExecutorService	createExecutor(int poolSize, ThreadFactory threadFactory, RejectedExecutionHandler rejectedExecutionHandler) Create a new ScheduledExecutorService instance.
public void	destroy() Cancel the ScheduledExecutorService on bean factory shutdown, stopping all scheduled tasks.
public Object	getObject()
public Class	getObjectType()
protected Runnable	getRunnableToSchedule(ScheduledExecutorTask task) Determine the actual Runnable to schedule for the given task.
public boolean	isSingleton()
protected void	registerTasks(ScheduledExecutorTask[] tasks, ScheduledExecutorService executor) Register the specified ScheduledExecutorTask ScheduledExecutorTasks on the given ScheduledExecutorService .
public void	setBeanName(String name)
public void	setContinueScheduledExecutionAfterException(boolean continueScheduledExecutionAfterException) Specify whether to continue the execution of a scheduled task after it threw an exception.
public void	setExposeUnconfigurableExecutor(boolean exposeUnconfigurableExecutor) Specify whether this FactoryBean should expose an unconfigurable decorator for the created executor.
public void	setPoolSize(int poolSize) Set the ScheduledExecutorService's pool size.
public void	setRejectedExecutionHandler(RejectedExecutionHandler rejectedExecutionHandler) Set the RejectedExecutionHandler to use for the ThreadPoolExecutor.
public void	setScheduledExecutorTasks(ScheduledExecutorTask[] scheduledExecutorTasks) Register a list of ScheduledExecutorTask objects with the ScheduledExecutorService that this FactoryBean creates.
public void	setThreadFactory(ThreadFactory threadFactory) Set the ThreadFactory to use for the ThreadPoolExecutor's thread pool.

Field Detail

logger
final protected Log logger(Code)

Method Detail

afterPropertiesSet
public void afterPropertiesSet()(Code)

createExecutor
protected ScheduledExecutorService createExecutor(int poolSize, ThreadFactory threadFactory, RejectedExecutionHandler rejectedExecutionHandler)(Code)
	Create a new ScheduledExecutorService instance. Called by `afterPropertiesSet`. The default implementation creates a ScheduledThreadPoolExecutor . Can be overridden in subclasses to provide custom ScheduledExecutorService instances. Parameters: poolSize - the specified pool size Parameters: threadFactory - the ThreadFactory to use Parameters: rejectedExecutionHandler - the RejectedExecutionHandler to use a new ScheduledExecutorService instance See Also: ScheduledExecutorFactoryBean.afterPropertiesSet() See Also: java.util.concurrent.ScheduledThreadPoolExecutor

destroy
public void destroy()(Code)
	Cancel the ScheduledExecutorService on bean factory shutdown, stopping all scheduled tasks. See Also: java.util.concurrent.ScheduledExecutorService.shutdown

getObject
public Object getObject()(Code)

getObjectType
public Class getObjectType()(Code)

getRunnableToSchedule
protected Runnable getRunnableToSchedule(ScheduledExecutorTask task)(Code)
	Determine the actual Runnable to schedule for the given task. Wraps the task's Runnable in a org.springframework.scheduling.support.DelegatingExceptionProofRunnable if necessary, according to the ScheduledExecutorFactoryBean.setContinueScheduledExecutionAfterException "continueScheduledExecutionAfterException" flag. Parameters: task - the ScheduledExecutorTask to schedule the actual Runnable to schedule (may be a decorator)

isSingleton
public boolean isSingleton()(Code)

registerTasks
protected void registerTasks(ScheduledExecutorTask[] tasks, ScheduledExecutorService executor)(Code)
	Register the specified ScheduledExecutorTask ScheduledExecutorTasks on the given ScheduledExecutorService . Parameters: tasks - the specified ScheduledExecutorTasks (never empty) Parameters: executor - the ScheduledExecutorService to register the tasks on.

setBeanName
public void setBeanName(String name)(Code)

setContinueScheduledExecutionAfterException
public void setContinueScheduledExecutionAfterException(boolean continueScheduledExecutionAfterException)(Code)
	Specify whether to continue the execution of a scheduled task after it threw an exception. Default is "false", matching the native behavior of a java.util.concurrent.ScheduledExecutorService . Switch this flag to "true" for exception-proof execution of each task, continuing scheduled execution as in the case of successful execution. See Also: java.util.concurrent.ScheduledExecutorService.scheduleAtFixedRate

setExposeUnconfigurableExecutor
public void setExposeUnconfigurableExecutor(boolean exposeUnconfigurableExecutor)(Code)
	Specify whether this FactoryBean should expose an unconfigurable decorator for the created executor. Default is "false", exposing the raw executor as bean reference. Switch this flag to "true" to strictly prevent clients from modifying the executor's configuration. See Also: java.util.concurrent.Executors.unconfigurableScheduledExecutorService

setPoolSize
public void setPoolSize(int poolSize)(Code)
	Set the ScheduledExecutorService's pool size. Default is 1.

setRejectedExecutionHandler
public void setRejectedExecutionHandler(RejectedExecutionHandler rejectedExecutionHandler)(Code)
	Set the RejectedExecutionHandler to use for the ThreadPoolExecutor. Default is the ThreadPoolExecutor's default abort policy. See Also: java.util.concurrent.ThreadPoolExecutor.AbortPolicy

setScheduledExecutorTasks
public void setScheduledExecutorTasks(ScheduledExecutorTask[] scheduledExecutorTasks)(Code)
	Register a list of ScheduledExecutorTask objects with the ScheduledExecutorService that this FactoryBean creates. Depending on each ScheduledExecutorTask's settings, it will be registered via one of ScheduledExecutorService's schedule methods. See Also: java.util.concurrent.ScheduledExecutorService.schedule(java.lang.Runnablelongjava.util.concurrent.TimeUnit) See Also: java.util.concurrent.ScheduledExecutorService.scheduleWithFixedDelay(java.lang.Runnablelonglongjava.util.concurrent.TimeUnit) See Also: java.util.concurrent.ScheduledExecutorService.scheduleAtFixedRate(java.lang.Runnablelonglongjava.util.concurrent.TimeUnit)

setThreadFactory
public void setThreadFactory(ThreadFactory threadFactory)(Code)
	Set the ThreadFactory to use for the ThreadPoolExecutor's thread pool. Default is the ThreadPoolExecutor's default thread factory. See Also: java.util.concurrent.Executors.defaultThreadFactory

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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