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org.springframework.scheduling.commonj Documentation Differences

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Class WorkManagerTaskExecutor

TaskExecutor implementation that delegates to a CommonJ WorkManager, implementing the 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: At the time of this writing, the CommonJ WorkManager facility is only supported on IBM WebSphere 6.0+ and BEA WebLogic 9.0+, despite being such a crucial API for an application server. (There is a similar facility available on WebSphere 5.1 Enterprise, though, which we will discuss below.)

On JBoss and GlassFish, a similar facility is available through the JCA WorkManager. See the classes which are the direct equivalent of this CommonJ adapter class. A similar facility is available on WebSphere 5.1, under the name "Asynch Beans". Its central interface is called WorkManager too and is also obtained from JNDI, just like a standard CommonJ WorkManager. However, this WorkManager variant is notably different: The central execution method is called "startWork" instead of "schedule", and takes a slightly different Work interface as parameter. Support for this WebSphere 5.1 variant can be built with this class and its helper DelegatingWork as template: Call the WorkManager's startWork(Work) instead of schedule(Work) in the execute(Runnable) implementation. Furthermore, for simplicity's sake, drop the entire "Implementation of the CommonJ WorkManager interface" section (and the corresponding implements WorkManager clause at the class level). Of course, you also need to change all imports in your WorkManagerTaskExecutor and DelegatingWork variants to the corresponding WebSphere API imports ( and, respectively). This should be sufficient to get a TaskExecutor adapter for WebSphere 5. @author Juergen Hoeller @since 2.0