/*
 * 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
 *
 *      https://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.
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package org.springframework.scheduling.config;

import org.w3c.dom.Element;

import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.StringUtils;

Parser for the 'executor' element of the 'task' namespace.
Author:Mark Fisher, Juergen Hoeller
Since:3.0
/** * Parser for the 'executor' element of the 'task' namespace. * * @author Mark Fisher * @author Juergen Hoeller * @since 3.0 */
public class ExecutorBeanDefinitionParser extends AbstractSingleBeanDefinitionParser { @Override protected String getBeanClassName(Element element) { return "org.springframework.scheduling.config.TaskExecutorFactoryBean"; } @Override protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) { String keepAliveSeconds = element.getAttribute("keep-alive"); if (StringUtils.hasText(keepAliveSeconds)) { builder.addPropertyValue("keepAliveSeconds", keepAliveSeconds); } String queueCapacity = element.getAttribute("queue-capacity"); if (StringUtils.hasText(queueCapacity)) { builder.addPropertyValue("queueCapacity", queueCapacity); } configureRejectionPolicy(element, builder); String poolSize = element.getAttribute("pool-size"); if (StringUtils.hasText(poolSize)) { builder.addPropertyValue("poolSize", poolSize); } } private void configureRejectionPolicy(Element element, BeanDefinitionBuilder builder) { String rejectionPolicy = element.getAttribute("rejection-policy"); if (!StringUtils.hasText(rejectionPolicy)) { return; } String prefix = "java.util.concurrent.ThreadPoolExecutor."; String policyClassName; if (rejectionPolicy.equals("ABORT")) { policyClassName = prefix + "AbortPolicy"; } else if (rejectionPolicy.equals("CALLER_RUNS")) { policyClassName = prefix + "CallerRunsPolicy"; } else if (rejectionPolicy.equals("DISCARD")) { policyClassName = prefix + "DiscardPolicy"; } else if (rejectionPolicy.equals("DISCARD_OLDEST")) { policyClassName = prefix + "DiscardOldestPolicy"; } else { policyClassName = rejectionPolicy; } builder.addPropertyValue("rejectedExecutionHandler", new RootBeanDefinition(policyClassName)); } }