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/*
 * 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.scheduling;

import org.springframework.core.task.TaskExecutor;

/**
 * A {@link org.springframework.core.task.TaskExecutor} extension exposing
 * scheduling characteristics that are relevant to potential task submitters.
 *
 * 

Scheduling clients are encouraged to submit * {@link Runnable Runnables} that match the exposed preferences * of the TaskExecutor implementation in use. * * @author Juergen Hoeller * @since 2.0 * @see SchedulingAwareRunnable * @see org.springframework.core.task.TaskExecutor * @see org.springframework.scheduling.commonj.WorkManagerTaskExecutor */ public interface SchedulingTaskExecutor extends TaskExecutor { /** * Does this TaskExecutor prefer short-lived tasks over * long-lived tasks? *

A SchedulingTaskExecutor implementation can indicate * whether it prefers submitted tasks to perform as little work as they * can within a single task execution. For example, submitted tasks * might break a repeated loop into individual subtasks which submit a * follow-up task afterwards (if feasible). *

This should be considered a hint. Of course TaskExecutor * clients are free to ignore this flag and hence the * SchedulingTaskExecutor interface overall. However, thread * pools will usually indicated a preference for short-lived tasks, to be * able to perform more fine-grained scheduling. * @return true if this TaskExecutor prefers * short-lived tasks */ boolean prefersShortLivedTasks(); }





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