org.springframework.scheduling.concurrent
Class ConcurrentTaskExecutor

java.lang.Object
  org.springframework.scheduling.concurrent.ConcurrentTaskExecutor

All Implemented Interfaces:

Executor, TaskExecutor, SchedulingTaskExecutor

public class ConcurrentTaskExecutor
extends Object
implements SchedulingTaskExecutor, Executor

Adapter that takes a JDK 1.5 java.util.concurrent.Executor and exposes a Spring TaskExecutor for it.

NOTE: This class implements Spring's TaskExecutor interface as well as the JDK 1.5 Executor interface, with the former being the primary interface, the other just serving as secondary convenience. For this reason, the exception handling follows the TaskExecutor contract rather than the Executor contract, in particular regarding the TaskRejectedException.

Note that there is a pre-built ThreadPoolTaskExecutor that allows for defining a JDK 1.5 ThreadPoolExecutor in bean style, exposing it as a Spring TaskExecutor directly. This is a convenient alternative to a raw ThreadPoolExecutor definition with a separate definition of the present adapter class.

Since:

2.0

Author:

Juergen Hoeller

See Also:

Executor, ThreadPoolExecutor, Executors, ThreadPoolTaskExecutor

Constructor Summary

ConcurrentTaskExecutor()
Create a new ConcurrentTaskExecutor, using a single thread executor as default.

ConcurrentTaskExecutor(Executor concurrentExecutor)
Create a new ConcurrentTaskExecutor, using the given JDK 1.5 concurrent executor.

Method Summary

void	execute(Runnable task) Delegates to the specified JDK 1.5 concurrent executor.
Executor	getConcurrentExecutor() Return the JDK 1.5 concurrent executor that this adapter delegates to.
boolean	prefersShortLivedTasks() This task executor prefers short-lived work units.
void	setConcurrentExecutor(Executor concurrentExecutor) Specify the JDK 1.5 concurrent executor to delegate to.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConcurrentTaskExecutor

public ConcurrentTaskExecutor()

Create a new ConcurrentTaskExecutor, using a single thread executor as default.

See Also:

Executors.newSingleThreadExecutor()

ConcurrentTaskExecutor

public ConcurrentTaskExecutor(Executor concurrentExecutor)

Create a new ConcurrentTaskExecutor, using the given JDK 1.5 concurrent executor.

Parameters:

concurrentExecutor - the JDK 1.5 concurrent executor to delegate to

Method Detail

setConcurrentExecutor

public void setConcurrentExecutor(Executor concurrentExecutor)

Specify the JDK 1.5 concurrent executor to delegate to.

getConcurrentExecutor

public Executor getConcurrentExecutor()

Return the JDK 1.5 concurrent executor that this adapter delegates to.

execute

public void execute(Runnable task)

Delegates to the specified JDK 1.5 concurrent executor.

Specified by:

execute in interface Executor

Specified by:

execute in interface TaskExecutor

Parameters:

task - the Runnable to execute (never null)

See Also:

Executor.execute(Runnable)

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