org.springframework.batch.core.jsr.configuration.xml.BatchParser Maven / Gradle / Ivy
/*
* Copyright 2013-2021 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.
*/
package org.springframework.batch.core.jsr.configuration.xml;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.xml.AbstractBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.xml.DomUtils;
import org.w3c.dom.Element;
/**
* Parser used to parse the batch.xml file as defined in JSR-352. It is not
* recommended to use the batch.xml approach with Spring to manage bean instantiation.
* It is recommended that standard Spring bean configurations (via XML or Java Config)
* be used.
*
* @author Michael Minella
* @since 3.0
*/
public class BatchParser extends AbstractBeanDefinitionParser {
private static final Log logger = LogFactory.getLog(BatchParser.class);
@Override
protected boolean shouldGenerateIdAsFallback() {
return true;
}
@Override
protected AbstractBeanDefinition parseInternal(Element element,
ParserContext parserContext) {
BeanDefinitionRegistry registry = parserContext.getRegistry();
parseRefElements(element, registry);
return null;
}
private void parseRefElements(Element element,
BeanDefinitionRegistry registry) {
List beanElements = DomUtils.getChildElementsByTagName(element, "ref");
if(beanElements.size() > 0) {
for (Element curElement : beanElements) {
AbstractBeanDefinition beanDefinition = BeanDefinitionBuilder.genericBeanDefinition(curElement.getAttribute("class"))
.getBeanDefinition();
beanDefinition.setScope("step");
String beanName = curElement.getAttribute("id");
if(!registry.containsBeanDefinition(beanName)) {
registry.registerBeanDefinition(beanName, beanDefinition);
} else {
if (logger.isInfoEnabled()) {
logger.info("Ignoring batch.xml bean definition for " + beanName + " because another bean of the same name has been registered");
}
}
}
}
}
}