001/* 002 * Copyright 2006-2009 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.configuration.xml; 017 018import java.util.Collection; 019 020import org.springframework.batch.core.job.flow.support.state.StepState; 021import org.springframework.beans.factory.config.BeanDefinition; 022import org.springframework.beans.factory.parsing.BeanComponentDefinition; 023import org.springframework.beans.factory.support.AbstractBeanDefinition; 024import org.springframework.beans.factory.support.BeanDefinitionBuilder; 025import org.springframework.beans.factory.xml.ParserContext; 026import org.w3c.dom.Element; 027 028/** 029 * Internal parser for the <step/> elements inside a job. A step element 030 * references a bean definition for a 031 * {@link org.springframework.batch.core.Step} and goes on to (optionally) list 032 * a set of transitions from that step to others with <next on="pattern" 033 * to="stepName"/>. Used by the {@link JobParser}. 034 * 035 * @see JobParser 036 * 037 * @author Dave Syer 038 * @author Thomas Risberg 039 * @since 2.0 040 */ 041public class InlineStepParser extends AbstractStepParser { 042 043 /** 044 * Parse the step and turn it into a list of transitions. 045 * 046 * @param element the <step/gt; element to parse 047 * @param parserContext the parser context for the bean factory 048 * @param jobFactoryRef the reference to the {@link JobParserJobFactoryBean} 049 * from the enclosing tag 050 * @return a collection of bean definitions for 051 * {@link org.springframework.batch.core.job.flow.support.StateTransition} 052 * instances objects 053 */ 054 public Collection<BeanDefinition> parse(Element element, ParserContext parserContext, String jobFactoryRef) { 055 056 BeanDefinitionBuilder stateBuilder = BeanDefinitionBuilder.genericBeanDefinition(StepState.class); 057 String stepId = element.getAttribute(ID_ATTR); 058 059 AbstractBeanDefinition bd = parseStep(element, parserContext, jobFactoryRef); 060 parserContext.registerBeanComponent(new BeanComponentDefinition(bd, stepId)); 061 stateBuilder.addConstructorArgReference(stepId); 062 063 return InlineFlowParser.getNextElements(parserContext, stepId, stateBuilder.getBeanDefinition(), element); 064 065 } 066 067}