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SimpleTaskWorkManager (Spring Framework API 2.0) - Spring Framework 2.0.5 API 文档英文版

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org.springframework.jca.work
Class SimpleTaskWorkManager

java.lang.Object
  org.springframework.jca.work.SimpleTaskWorkManager

All Implemented Interfaces:

WorkManager

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public class SimpleTaskWorkManager
extends Object
implements WorkManager

Simple JCA 1.5 WorkManager implementation that delegates to a Spring TaskExecutor. Provides simple task execution including start timeouts, but without support for a JCA ExecutionContext (i.e. without support for imported transactions).

Uses a SyncTaskExecutor for doWork(javax.resource.spi.work.Work) calls and a SimpleAsyncTaskExecutor for startWork(javax.resource.spi.work.Work) and scheduleWork(javax.resource.spi.work.Work) calls, by default. These default task executors can be overridden through configuration.

NOTE: This WorkManager does not provide thread pooling by default! Specify a ThreadPoolTaskExecutor (or any other thread-pooling TaskExecutor) as "asyncTaskExecutor" in order to achieve actual thread pooling.

This WorkManager automatically detects a specified AsyncTaskExecutor implementation and uses its extended timeout functionality where appropriate. JCA WorkListeners are fully supported in any case.

Since:

2.0.3

Author:

Juergen Hoeller

See Also:

setSyncTaskExecutor(org.springframework.core.task.TaskExecutor), setAsyncTaskExecutor(org.springframework.core.task.TaskExecutor)

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Field Summary

 

Fields inherited from interface javax.resource.spi.work.WorkManager
IMMEDIATE, INDEFINITE, UNKNOWN

 

Constructor Summary
SimpleTaskWorkManager()

 

Method Summary
void	doWork(Work work)
void	doWork(Work work, long startTimeout, ExecutionContext executionContext, WorkListener workListener)
protected  long	executeWork(TaskExecutor taskExecutor, Work work, long startTimeout, boolean blockUntilStarted, ExecutionContext executionContext, WorkListener workListener)           Execute the given Work on the specified TaskExecutor.
void	scheduleWork(Work work)
void	scheduleWork(Work work, long startTimeout, ExecutionContext executionContext, WorkListener workListener)
void	setAsyncTaskExecutor(TaskExecutor asyncTaskExecutor)           Specify the TaskExecutor to use for asynchronous work execution (i.e.
void	setSyncTaskExecutor(TaskExecutor syncTaskExecutor)           Specify the TaskExecutor to use for synchronous work execution (i.e.
long	startWork(Work work)
long	startWork(Work work, long startTimeout, ExecutionContext executionContext, WorkListener workListener)

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

SimpleTaskWorkManager

public SimpleTaskWorkManager()

Method Detail

setSyncTaskExecutor

public void setSyncTaskExecutor(TaskExecutor syncTaskExecutor)

Specify the TaskExecutor to use for synchronous work execution (i.e. doWork(javax.resource.spi.work.Work) calls).

Default is a SyncTaskExecutor.

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setAsyncTaskExecutor

public void setAsyncTaskExecutor(TaskExecutor asyncTaskExecutor)

Specify the TaskExecutor to use for asynchronous work execution (i.e. startWork(javax.resource.spi.work.Work) and scheduleWork(javax.resource.spi.work.Work) calls).

This will typically (but not necessarily) be an AsyncTaskExecutor implementation. Default is a SimpleAsyncTaskExecutor.

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doWork

public void doWork(Work work)
            throws WorkException

Specified by:

doWork in interface WorkManager

Throws:

WorkException

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doWork

public void doWork(Work work,
                   long startTimeout,
                   ExecutionContext executionContext,
                   WorkListener workListener)
            throws WorkException

Specified by:

doWork in interface WorkManager

Throws:

WorkException

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startWork

public long startWork(Work work)
               throws WorkException

Specified by:

startWork in interface WorkManager

Throws:

WorkException

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startWork

public long startWork(Work work,
                      long startTimeout,
                      ExecutionContext executionContext,
                      WorkListener workListener)
               throws WorkException

Specified by:

startWork in interface WorkManager

Throws:

WorkException

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scheduleWork

public void scheduleWork(Work work)
                  throws WorkException

Specified by:

scheduleWork in interface WorkManager

Throws:

WorkException

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scheduleWork

public void scheduleWork(Work work,
                         long startTimeout,
                         ExecutionContext executionContext,
                         WorkListener workListener)
                  throws WorkException

Specified by:

scheduleWork in interface WorkManager

Throws:

WorkException

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executeWork

protected long executeWork(TaskExecutor taskExecutor,
                           Work work,
                           long startTimeout,
                           boolean blockUntilStarted,
                           ExecutionContext executionContext,
                           WorkListener workListener)
                    throws WorkException

Execute the given Work on the specified TaskExecutor.

Parameters:

taskExecutor - the TaskExecutor to use

work - the Work to execute

startTimeout - the time duration within which the Work is supposed to start

blockUntilStarted - whether to block until the Work has started

executionContext - the JCA ExecutionContext for the given Work

workListener - the WorkListener to clal for the given Work

Returns:

the time elapsed from Work acceptance until start of execution (or -1 if not applicable or not known)

Throws:

WorkException - if the TaskExecutor did not accept the Work

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