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Spring Framework example source code file (AsyncTaskExecutor.java)

This example Spring Framework source code file (AsyncTaskExecutor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

asynctaskexecutor, asynctaskexecutor, taskexecutor, taskexecutor, timeout_immediate, timeout_immediate, timeout_indefinite, timeout_indefinite

The Spring Framework AsyncTaskExecutor.java source code

/*
 * Copyright 2002-2007 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.core.task;

/**
 * Extended interface for asynchronous {@link TaskExecutor} implementations,
 * offering an overloaded {@link #execute(Runnable, long)} variant with
 * start timeout parameter.
 *
 * <p>Implementing this interface also indicates that the {@link #execute(Runnable)}
 * method will not execute its Runnable in the caller's thread but rather
 * asynchronously in some other thread (at least usually).
 *
 * @author Juergen Hoeller
 * @since 2.0.3
 * @see SimpleAsyncTaskExecutor
 * @see org.springframework.scheduling.SchedulingTaskExecutor
 */
public interface AsyncTaskExecutor extends TaskExecutor {

	/** Constant that indicates immediate execution */
	long TIMEOUT_IMMEDIATE = 0;

	/** Constant that indicates no time limit */
	long TIMEOUT_INDEFINITE = Long.MAX_VALUE;


	/**
	 * Execute the given <code>task.
	 * @param task the <code>Runnable to execute (never null)
	 * @param startTimeout the time duration 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 {@link #TIMEOUT_IMMEDIATE} or
	 * {@link #TIMEOUT_INDEFINITE} (the default as used by {@link #execute(Runnable)}).
	 * @throws TaskTimeoutException in case of the task being rejected because
	 * of the timeout (i.e. it cannot be started in time)
	 * @throws TaskRejectedException if the given task was not accepted
	 */
	void execute(Runnable task, long startTimeout);

}

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