/* * Copyright 2002-2016 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; import java.util.concurrent.Executor; /** * Simple task executor interface that abstracts the execution * of a {@link Runnable}. * * <p>Implementations can use all sorts of different execution strategies, * such as: synchronous, asynchronous, using a thread pool, and more. * * <p>Equivalent to JDK 1.5's {@link java.util.concurrent.Executor} * interface; extending it now in Spring 3.0, so that clients may declare * a dependency on an Executor and receive any TaskExecutor implementation. * This interface remains separate from the standard Executor interface * mainly for backwards compatibility with JDK 1.4 in Spring 2.x. * * @author Juergen Hoeller * @since 2.0 * @see java.util.concurrent.Executor */ @FunctionalInterface public interface TaskExecutor extends Executor { /** * Execute the given {@code task}. * <p>The call might return immediately if the implementation uses * an asynchronous execution strategy, or might block in the case * of synchronous execution. * @param task the {@code Runnable} to execute (never {@code null}) * @throws TaskRejectedException if the given task was not accepted */ @Override void execute(Runnable task); }