001/* 002 * Copyright 2002-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.scheduling.annotation; 018 019import org.springframework.context.annotation.AdviceMode; 020import org.springframework.context.annotation.AdviceModeImportSelector; 021 022/** 023 * Selects which implementation of {@link AbstractAsyncConfiguration} should 024 * be used based on the value of {@link EnableAsync#mode} on the importing 025 * {@code @Configuration} class. 026 * 027 * @author Chris Beams 028 * @author Juergen Hoeller 029 * @since 3.1 030 * @see EnableAsync 031 * @see ProxyAsyncConfiguration 032 */ 033public class AsyncConfigurationSelector extends AdviceModeImportSelector<EnableAsync> { 034 035 private static final String ASYNC_EXECUTION_ASPECT_CONFIGURATION_CLASS_NAME = 036 "org.springframework.scheduling.aspectj.AspectJAsyncConfiguration"; 037 038 039 /** 040 * Returns {@link ProxyAsyncConfiguration} or {@code AspectJAsyncConfiguration} 041 * for {@code PROXY} and {@code ASPECTJ} values of {@link EnableAsync#mode()}, 042 * respectively. 043 */ 044 @Override 045 public String[] selectImports(AdviceMode adviceMode) { 046 switch (adviceMode) { 047 case PROXY: 048 return new String[] {ProxyAsyncConfiguration.class.getName()}; 049 case ASPECTJ: 050 return new String[] {ASYNC_EXECUTION_ASPECT_CONFIGURATION_CLASS_NAME}; 051 default: 052 return null; 053 } 054 } 055 056}