org.springframework.scheduling.commonj

Class WorkManagerTaskExecutor

java.lang.Object

org.springframework.jndi.JndiAccessor

org.springframework.jndi.JndiLocatorSupport

org.springframework.scheduling.commonj.WorkManagerTaskExecutor

All Implemented Interfaces:

commonj.work.WorkManager, java.util.concurrent.Executor, InitializingBean, AsyncListenableTaskExecutor, AsyncTaskExecutor, TaskExecutor, SchedulingTaskExecutor

public class WorkManagerTaskExecutor
extends JndiLocatorSupport
implements AsyncListenableTaskExecutor, SchedulingTaskExecutor, commonj.work.WorkManager, InitializingBean

TaskExecutor implementation that delegates to a CommonJ WorkManager, implementing the WorkManager interface, which either needs to be specified as reference or through the JNDI name.

This is the central convenience class for setting up a CommonJ WorkManager in a Spring context.

Also implements the CommonJ WorkManager interface itself, delegating all calls to the target WorkManager. Hence, a caller can choose whether it wants to talk to this executor through the Spring TaskExecutor interface or the CommonJ WorkManager interface.

The CommonJ WorkManager will usually be retrieved from the application server's JNDI environment, as defined in the server's management console.

Note: On the upcoming EE 7 compliant versions of WebLogic and WebSphere, a DefaultManagedTaskExecutor should be preferred, following JSR-236 support in Java EE 7.

Since:

2.0

Author:

Juergen Hoeller

Field Summary

Fields inherited from class org.springframework.jndi.JndiLocatorSupport

CONTAINER_PREFIX

Fields inherited from class org.springframework.jndi.JndiAccessor

logger

Fields inherited from interface org.springframework.core.task.AsyncTaskExecutor

TIMEOUT_IMMEDIATE, TIMEOUT_INDEFINITE

Fields inherited from interface commonj.work.WorkManager

IMMEDIATE, INDEFINITE

Constructor Summary

Constructors

Constructor and Description
WorkManagerTaskExecutor()

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet() Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.
void	execute(java.lang.Runnable task) Execute the given task.
void	execute(java.lang.Runnable task, long startTimeout) Execute the given task.
boolean	prefersShortLivedTasks() This task executor prefers short-lived work units.
commonj.work.WorkItem	schedule(commonj.work.Work work)
commonj.work.WorkItem	schedule(commonj.work.Work work, commonj.work.WorkListener workListener)
void	setTaskDecorator(TaskDecorator taskDecorator) Specify a custom TaskDecorator to be applied to any Runnable about to be executed.
void	setWorkListener(commonj.work.WorkListener workListener) Specify a CommonJ WorkListener to apply, if any.
void	setWorkManager(commonj.work.WorkManager workManager) Specify the CommonJ WorkManager to delegate to.
void	setWorkManagerName(java.lang.String workManagerName) Set the JNDI name of the CommonJ WorkManager.
<T> java.util.concurrent.Future<T>	submit(java.util.concurrent.Callable<T> task) Submit a Callable task for execution, receiving a Future representing that task.
java.util.concurrent.Future<?>	submit(java.lang.Runnable task) Submit a Runnable task for execution, receiving a Future representing that task.
<T> ListenableFuture<T>	submitListenable(java.util.concurrent.Callable<T> task) Submit a Callable task for execution, receiving a ListenableFuture representing that task.
ListenableFuture<?>	submitListenable(java.lang.Runnable task) Submit a Runnable task for execution, receiving a ListenableFuture representing that task.
boolean	waitForAll(java.util.Collection workItems, long timeout)
java.util.Collection	waitForAny(java.util.Collection workItems, long timeout)

Methods inherited from class org.springframework.jndi.JndiLocatorSupport

convertJndiName, isResourceRef, lookup, lookup, setResourceRef

Methods inherited from class org.springframework.jndi.JndiAccessor

getJndiEnvironment, getJndiTemplate, setJndiEnvironment, setJndiTemplate

Methods inherited from class java.lang.Object

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

Constructor Detail

WorkManagerTaskExecutor

public WorkManagerTaskExecutor()

Method Detail

setWorkManager

public void setWorkManager(commonj.work.WorkManager workManager)

Specify the CommonJ WorkManager to delegate to.

Alternatively, you can also specify the JNDI name of the target WorkManager.

See Also:

setWorkManagerName(java.lang.String)

setWorkManagerName

public void setWorkManagerName(java.lang.String workManagerName)

Set the JNDI name of the CommonJ WorkManager.

This can either be a fully qualified JNDI name, or the JNDI name relative to the current environment naming context if "resourceRef" is set to "true".

See Also:

setWorkManager(commonj.work.WorkManager), JndiLocatorSupport.setResourceRef(boolean)

setWorkListener

public void setWorkListener(commonj.work.WorkListener workListener)

Specify a CommonJ WorkListener to apply, if any.

This shared WorkListener instance will be passed on to the WorkManager by all execute(java.lang.Runnable) calls on this TaskExecutor.

setTaskDecorator

public void setTaskDecorator(TaskDecorator taskDecorator)

Specify a custom TaskDecorator to be applied to any Runnable about to be executed.

Note that such a decorator is not necessarily being applied to the user-supplied Runnable/Callable but rather to the actual execution callback (which may be a wrapper around the user-supplied task).

The primary use case is to set some execution context around the task's invocation, or to provide some monitoring/statistics for task execution.

Since:

4.3

afterPropertiesSet

public void afterPropertiesSet()
                        throws javax.naming.NamingException

Description copied from interface: InitializingBean

Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.

This method allows the bean instance to perform validation of its overall configuration and final initialization when all bean properties have been set.

Specified by:

afterPropertiesSet in interface InitializingBean

Throws:

javax.naming.NamingException

execute

public void execute(java.lang.Runnable task)

Description copied from interface: TaskExecutor

Execute the given task.

The call might return immediately if the implementation uses an asynchronous execution strategy, or might block in the case of synchronous execution.

Specified by:

execute in interface java.util.concurrent.Executor

Specified by:

execute in interface TaskExecutor

Parameters:

task - the Runnable to execute (never null)

execute

public void execute(java.lang.Runnable task,
                    long startTimeout)

Description copied from interface: AsyncTaskExecutor

Execute the given task.

Specified by:

execute in interface AsyncTaskExecutor

Parameters:

task - the Runnable to execute (never null)

startTimeout - the time duration (milliseconds) within which the task is supposed to start. This is intended as a hint to the executor, allowing for preferred handling of immediate tasks. Typical values are AsyncTaskExecutor.TIMEOUT_IMMEDIATE or AsyncTaskExecutor.TIMEOUT_INDEFINITE (the default as used by TaskExecutor.execute(Runnable)).

submit

public java.util.concurrent.Future<?> submit(java.lang.Runnable task)

Description copied from interface: AsyncTaskExecutor

Submit a Runnable task for execution, receiving a Future representing that task. The Future will return a null result upon completion.

Specified by:

submit in interface AsyncTaskExecutor

Parameters:

task - the Runnable to execute (never null)

Returns:

a Future representing pending completion of the task

submit

public <T> java.util.concurrent.Future<T> submit(java.util.concurrent.Callable<T> task)

Description copied from interface: AsyncTaskExecutor

Submit a Callable task for execution, receiving a Future representing that task. The Future will return the Callable's result upon completion.

Specified by:

submit in interface AsyncTaskExecutor

Parameters:

task - the Callable to execute (never null)

Returns:

a Future representing pending completion of the task

submitListenable

public ListenableFuture<?> submitListenable(java.lang.Runnable task)

Description copied from interface: AsyncListenableTaskExecutor

Submit a Runnable task for execution, receiving a ListenableFuture representing that task. The Future will return a null result upon completion.

Specified by:

submitListenable in interface AsyncListenableTaskExecutor

Parameters:

task - the Runnable to execute (never null)

Returns:

a ListenableFuture representing pending completion of the task

submitListenable

public <T> ListenableFuture<T> submitListenable(java.util.concurrent.Callable<T> task)

Description copied from interface: AsyncListenableTaskExecutor

Submit a Callable task for execution, receiving a ListenableFuture representing that task. The Future will return the Callable's result upon completion.

Specified by:

submitListenable in interface AsyncListenableTaskExecutor

Parameters:

task - the Callable to execute (never null)

Returns:

a ListenableFuture representing pending completion of the task

prefersShortLivedTasks

public boolean prefersShortLivedTasks()

This task executor prefers short-lived work units.

Specified by:

prefersShortLivedTasks in interface SchedulingTaskExecutor

Returns:

true if this TaskExecutor prefers short-lived tasks

schedule

public commonj.work.WorkItem schedule(commonj.work.Work work)
                               throws commonj.work.WorkException,
                                      java.lang.IllegalArgumentException

Specified by:

schedule in interface commonj.work.WorkManager

Throws:

commonj.work.WorkException

java.lang.IllegalArgumentException

schedule

public commonj.work.WorkItem schedule(commonj.work.Work work,
                                      commonj.work.WorkListener workListener)
                               throws commonj.work.WorkException

Specified by:

schedule in interface commonj.work.WorkManager

Throws:

commonj.work.WorkException

waitForAll

public boolean waitForAll(java.util.Collection workItems,
                          long timeout)
                   throws java.lang.InterruptedException

Specified by:

waitForAll in interface commonj.work.WorkManager

Throws:

java.lang.InterruptedException

waitForAny

public java.util.Collection waitForAny(java.util.Collection workItems,
                                       long timeout)
                                throws java.lang.InterruptedException

Specified by:

waitForAny in interface commonj.work.WorkManager

Throws:

java.lang.InterruptedException