org.springframework.scheduling.concurrent.ConcurrentTaskExecutor Maven / Gradle / Ivy
/*
* Copyright 2002-2006 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.scheduling.concurrent;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import org.springframework.scheduling.SchedulingTaskExecutor;
/**
* Adapter that takes a JDK 1.5 java.util.concurrent.Executor
* and exposes a Spring TaskExecutor for it.
*
* Note that there is a pre-built ThreadPoolTaskExecutor that allows
* for defining a JDK 1.5 ThreadPoolExecutor in bean style, exposing
* it as both Spring TaskExecutor and JDK 1.5 Executor. This is a
* convenient alternative to a direct ThreadPoolExecutor definition
* with separate ConcurrentTaskExecutor adapter definition.
*
* @author Juergen Hoeller
* @since 2.0
* @see java.util.concurrent.Executor
* @see java.util.concurrent.ThreadPoolExecutor
* @see java.util.concurrent.Executors
* @see ThreadPoolTaskExecutor
*/
public class ConcurrentTaskExecutor implements SchedulingTaskExecutor, Executor {
private Executor concurrentExecutor;
/**
* Create a new ConcurrentTaskExecutor,
* using a single thread executor as default.
* @see java.util.concurrent.Executors#newSingleThreadExecutor()
*/
public ConcurrentTaskExecutor() {
setConcurrentExecutor(null);
}
/**
* Create a new ConcurrentTaskExecutor,
* using the given JDK 1.5 concurrent executor as default.
* @param concurrentExecutor the JDK 1.5 concurrent executor to delegate to
*/
public ConcurrentTaskExecutor(Executor concurrentExecutor) {
setConcurrentExecutor(concurrentExecutor);
}
/**
* Specify the JDK 1.5 concurrent executor to delegate to.
*/
public void setConcurrentExecutor(Executor concurrentExecutor) {
this.concurrentExecutor =
(concurrentExecutor != null ? concurrentExecutor : Executors.newSingleThreadExecutor());
}
/**
* Delegates to the specified JDK 1.5 concurrent executor.
* @see java.util.concurrent.Executor#execute(Runnable)
*/
public void execute(Runnable task) {
this.concurrentExecutor.execute(task);
}
public boolean isShortLivedPreferred() {
return true;
}
}