Executor, ExecutorServicepublic class ManagedExecutorService extends Object implements ExecutorService
ExecutorService instances originating from an application
server are wrapped with this ManagedExecutorService.
The ManagedExecutorService wraps an ExecutorService and
prevents execution of the ExecutorService.shutdown() and
ExecutorService.shutdownNow() methods (them methods are not delegated
and therewith disabled).
This is helpful when you either expect an ExecutorService passed by
an application server or, if none is passed, you retrieve a private
ExecutorService yourself:
In the second case, you might want to shutdown your ExecutorService
after usage, in the first case you do not want to do so as the application
server is to take care on shutdown. You then do not wrap your private
ExecutorService; you do wrap any ExecutorService being passed
to you (by an application server).
Wrapping the ExecutorService being passed from the application server
and not wrapping the one you create yourself will enable you to shutdown the
ExecutorService in any case; in case it is your private one, it will
be shutdown; in case it is the one from the application server, the shutdown
calls are just ignored.
| Constructor | Description |
|---|---|
ManagedExecutorService(ExecutorService eExecutorService) |
Instantiates a new managed executor service.
|
| Modifier and Type | Method | Description |
|---|---|---|
boolean |
awaitTermination(long aTimeout,
TimeUnit aUnit) |
|
void |
execute(Runnable aArg0) |
|
<T> List<Future<T>> |
invokeAll(Collection<? extends Callable<T>> aTasks) |
|
<T> List<Future<T>> |
invokeAll(Collection<? extends Callable<T>> aTasks,
long aTimeout,
TimeUnit aUnit) |
|
<T> T |
invokeAny(Collection<? extends Callable<T>> aTasks) |
|
<T> T |
invokeAny(Collection<? extends Callable<T>> aTasks,
long aTimeout,
TimeUnit aUnit) |
|
boolean |
isShutdown() |
|
boolean |
isTerminated() |
|
void |
shutdown() |
|
List<Runnable> |
shutdownNow() |
|
Future<?> |
submit(Runnable aTask) |
|
<T> Future<T> |
submit(Runnable aTask,
T aResult) |
|
<T> Future<T> |
submit(Callable<T> aTask) |
public ManagedExecutorService(ExecutorService eExecutorService)
eExecutorService - the e executor servicepublic boolean awaitTermination(long aTimeout,
TimeUnit aUnit)
throws InterruptedException
awaitTermination in interface ExecutorServiceInterruptedExceptionpublic <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> aTasks, long aTimeout, TimeUnit aUnit) throws InterruptedException
invokeAll in interface ExecutorServiceInterruptedExceptionpublic <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> aTasks) throws InterruptedException
invokeAll in interface ExecutorServiceInterruptedExceptionpublic <T> T invokeAny(Collection<? extends Callable<T>> aTasks, long aTimeout, TimeUnit aUnit) throws InterruptedException, ExecutionException, TimeoutException
invokeAny in interface ExecutorServiceInterruptedExceptionExecutionExceptionTimeoutExceptionpublic <T> T invokeAny(Collection<? extends Callable<T>> aTasks) throws InterruptedException, ExecutionException
invokeAny in interface ExecutorServiceInterruptedExceptionExecutionExceptionpublic boolean isShutdown()
isShutdown in interface ExecutorServicepublic boolean isTerminated()
isTerminated in interface ExecutorServicepublic void shutdown()
shutdown in interface ExecutorServicepublic List<Runnable> shutdownNow()
shutdownNow in interface ExecutorServicepublic <T> Future<T> submit(Callable<T> aTask)
submit in interface ExecutorServicepublic <T> Future<T> submit(Runnable aTask, T aResult)
submit in interface ExecutorServicepublic Future<?> submit(Runnable aTask)
submit in interface ExecutorServiceCopyright © 2018. All rights reserved.