org.springframework.integration.config.xml.ChannelInterceptorParser Maven / Gradle / Ivy
/*
* Copyright 2002-2019 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.integration.config.xml;
import java.util.HashMap;
import java.util.Map;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.config.RuntimeBeanReference;
import org.springframework.beans.factory.parsing.BeanComponentDefinition;
import org.springframework.beans.factory.support.ManagedList;
import org.springframework.beans.factory.xml.BeanDefinitionParserDelegate;
import org.springframework.beans.factory.xml.ParserContext;
/**
* A helper class for parsing the sub-elements of a channel's
* interceptors element.
*
* @author Mark Fisher
* @author Oleg Zhurakousky
* @author Gary Russell
*/
public class ChannelInterceptorParser {
private final Map parsers;
public ChannelInterceptorParser() {
this.parsers = new HashMap();
this.parsers.put("wire-tap", new WireTapParser());
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public ManagedList parseInterceptors(Element element, ParserContext parserContext) {
ManagedList interceptors = new ManagedList();
NodeList childNodes = element.getChildNodes();
for (int i = 0; i < childNodes.getLength(); i++) {
Node child = childNodes.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE) {
Element childElement = (Element) child;
String localName = child.getLocalName();
if ("bean".equals(localName)) {
BeanDefinitionParserDelegate delegate = parserContext.getDelegate();
BeanDefinitionHolder holder = delegate.parseBeanDefinitionElement(childElement);
holder = delegate.decorateBeanDefinitionIfRequired(childElement, holder); // NOSONAR never null
parserContext.registerBeanComponent(new BeanComponentDefinition(holder));
interceptors.add(new RuntimeBeanReference(holder.getBeanName()));
}
else if ("ref".equals(localName)) {
String ref = childElement.getAttribute("bean");
interceptors.add(new RuntimeBeanReference(ref));
}
else {
BeanDefinitionRegisteringParser parser = this.parsers.get(localName);
if (parser == null) {
parserContext.getReaderContext().error(
"unsupported interceptor element '" + localName + "'", childElement);
}
String interceptorBeanName = parser.parse(childElement, parserContext);
interceptors.add(new RuntimeBeanReference(interceptorBeanName));
}
}
}
return interceptors;
}
}