001/* 002 * Copyright 2002-2016 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.config; 018 019import org.w3c.dom.Element; 020 021import org.springframework.beans.factory.support.BeanDefinitionBuilder; 022import org.springframework.beans.factory.support.RootBeanDefinition; 023import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser; 024import org.springframework.beans.factory.xml.ParserContext; 025import org.springframework.util.StringUtils; 026 027/** 028 * Parser for the 'executor' element of the 'task' namespace. 029 * 030 * @author Mark Fisher 031 * @author Juergen Hoeller 032 * @since 3.0 033 */ 034public class ExecutorBeanDefinitionParser extends AbstractSingleBeanDefinitionParser { 035 036 @Override 037 protected String getBeanClassName(Element element) { 038 return "org.springframework.scheduling.config.TaskExecutorFactoryBean"; 039 } 040 041 @Override 042 protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) { 043 String keepAliveSeconds = element.getAttribute("keep-alive"); 044 if (StringUtils.hasText(keepAliveSeconds)) { 045 builder.addPropertyValue("keepAliveSeconds", keepAliveSeconds); 046 } 047 String queueCapacity = element.getAttribute("queue-capacity"); 048 if (StringUtils.hasText(queueCapacity)) { 049 builder.addPropertyValue("queueCapacity", queueCapacity); 050 } 051 configureRejectionPolicy(element, builder); 052 String poolSize = element.getAttribute("pool-size"); 053 if (StringUtils.hasText(poolSize)) { 054 builder.addPropertyValue("poolSize", poolSize); 055 } 056 } 057 058 private void configureRejectionPolicy(Element element, BeanDefinitionBuilder builder) { 059 String rejectionPolicy = element.getAttribute("rejection-policy"); 060 if (!StringUtils.hasText(rejectionPolicy)) { 061 return; 062 } 063 String prefix = "java.util.concurrent.ThreadPoolExecutor."; 064 String policyClassName; 065 if (rejectionPolicy.equals("ABORT")) { 066 policyClassName = prefix + "AbortPolicy"; 067 } 068 else if (rejectionPolicy.equals("CALLER_RUNS")) { 069 policyClassName = prefix + "CallerRunsPolicy"; 070 } 071 else if (rejectionPolicy.equals("DISCARD")) { 072 073 } 074 else if (rejectionPolicy.equals("DISCARD_OLDEST")) { 075 policyClassName = prefix + "DiscardOldestPolicy"; 076 } 077 else { 078 policyClassName = rejectionPolicy; 079 } 080 builder.addPropertyValue("rejectedExecutionHandler", new RootBeanDefinition(policyClassName)); 081 } 082 083}