001/* 002 * Copyright 2013-2014 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 */ 016package org.springframework.batch.core.jsr.configuration.xml; 017 018import java.util.Collection; 019 020import org.springframework.batch.core.job.flow.JobExecutionDecider; 021import org.springframework.batch.core.jsr.configuration.support.BatchArtifactType; 022import org.springframework.batch.core.jsr.job.flow.support.state.JsrStepState; 023import org.springframework.beans.factory.config.BeanDefinition; 024import org.springframework.beans.factory.config.RuntimeBeanReference; 025import org.springframework.beans.factory.parsing.BeanComponentDefinition; 026import org.springframework.beans.factory.support.AbstractBeanDefinition; 027import org.springframework.beans.factory.support.BeanDefinitionBuilder; 028import org.springframework.beans.factory.xml.ParserContext; 029import org.springframework.util.StringUtils; 030import org.w3c.dom.Element; 031 032/** 033 * Parser for the <decision /> element as specified in JSR-352. The current state 034 * parses a decision element and assumes that it refers to a {@link JobExecutionDecider} 035 * 036 * @author Michael Minella 037 * @author Chris Schaefer 038 * @since 3.0 039 */ 040public class JsrDecisionParser { 041 042 private static final String ID_ATTRIBUTE = "id"; 043 private static final String REF_ATTRIBUTE = "ref"; 044 045 public Collection<BeanDefinition> parse(Element element, ParserContext parserContext, String jobFactoryRef) { 046 BeanDefinitionBuilder factoryBuilder = BeanDefinitionBuilder.genericBeanDefinition(); 047 AbstractBeanDefinition factoryDefinition = factoryBuilder.getRawBeanDefinition(); 048 factoryDefinition.setBeanClass(DecisionStepFactoryBean.class); 049 050 BeanDefinitionBuilder stateBuilder = BeanDefinitionBuilder.genericBeanDefinition(JsrStepState.class); 051 052 String idAttribute = element.getAttribute(ID_ATTRIBUTE); 053 054 parserContext.registerBeanComponent(new BeanComponentDefinition(factoryDefinition, idAttribute)); 055 stateBuilder.addConstructorArgReference(idAttribute); 056 057 String refAttribute = element.getAttribute(REF_ATTRIBUTE); 058 factoryDefinition.getPropertyValues().add("decider", new RuntimeBeanReference(refAttribute)); 059 factoryDefinition.getPropertyValues().add("name", idAttribute); 060 061 if(StringUtils.hasText(jobFactoryRef)) { 062 factoryDefinition.setAttribute("jobParserJobFactoryBeanRef", jobFactoryRef); 063 } 064 065 new PropertyParser(refAttribute, parserContext, BatchArtifactType.STEP_ARTIFACT, idAttribute).parseProperties(element); 066 067 return FlowParser.getNextElements(parserContext, stateBuilder.getBeanDefinition(), element); 068 } 069}