/*
* 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;
/**
* Extension of the Runnable interface, adding special callbacks
* for long-running operations.
*
* <p>This interface closely corresponds to the CommonJ Work interface,
* but is kept separate to avoid a required CommonJ dependency.
*
* <p>Scheduling-capable TaskExecutors are encouraged to check a submitted
* Runnable, detecting whether this interface is implemented and reacting
* as appropriately as they are able to.
*
* @author Juergen Hoeller
* @since 2.0
* @see commonj.work.Work
* @see org.springframework.core.task.TaskExecutor
* @see SchedulingTaskExecutor
* @see org.springframework.scheduling.commonj.WorkManagerTaskExecutor
*/
public interface SchedulingAwareRunnable extends Runnable {
/**
* Return whether the Runnable's operation is long-lived
* (<code>true</code>) versus short-lived (<code>false</code>).
* <p>In the former case, the task will not allocate a thread from the thread
* pool (if any) but rather be considered as long-running background thread.
* <p>This should be considered a hint. Of course TaskExecutor implementations
* are free to ignore this flag and the SchedulingAwareRunnable interface overall.
*/
boolean isLongLived();
}