/*
* Copyright 2002-2009 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
*
* http://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.web.servlet.config;
import java.util.List;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.parsing.BeanComponentDefinition;
import org.springframework.beans.factory.parsing.CompositeComponentDefinition;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.factory.xml.BeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.xml.DomUtils;
import org.springframework.web.servlet.handler.MappedInterceptor;
import org.w3c.dom.Element;
/**
* {@link org.springframework.beans.factory.xml.BeanDefinitionParser} that parses a {@code interceptors} element to register
* a set of {@link MappedInterceptor} definitions.
*
* @author Keith Donald
* @since 3.0
*/
class InterceptorsBeanDefinitionParser implements BeanDefinitionParser {
public BeanDefinition parse(Element element, ParserContext parserContext) {
CompositeComponentDefinition compDefinition = new CompositeComponentDefinition(element.getTagName(), parserContext.extractSource(element));
parserContext.pushContainingComponent(compDefinition);
List<Element> interceptors = DomUtils.getChildElementsByTagName(element, new String[] { "bean", "interceptor" });
for (Element interceptor : interceptors) {
RootBeanDefinition mappedInterceptorDef = new RootBeanDefinition(MappedInterceptor.class);
mappedInterceptorDef.setSource(parserContext.extractSource(interceptor));
mappedInterceptorDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
String[] pathPatterns;
BeanDefinitionHolder interceptorDef;
if ("interceptor".equals(interceptor.getLocalName())) {
List<Element> paths = DomUtils.getChildElementsByTagName(interceptor, "mapping");
pathPatterns = new String[paths.size()];
for (int i = 0; i < paths.size(); i++) {
pathPatterns[i] = paths.get(i).getAttribute("path");
}
Element interceptorBean = DomUtils.getChildElementByTagName(interceptor, "bean");
interceptorDef = parserContext.getDelegate().parseBeanDefinitionElement(interceptorBean);
interceptorDef = parserContext.getDelegate().decorateBeanDefinitionIfRequired(interceptorBean, interceptorDef);
} else {
pathPatterns = null;
interceptorDef = parserContext.getDelegate().parseBeanDefinitionElement(interceptor);
interceptorDef = parserContext.getDelegate().decorateBeanDefinitionIfRequired(interceptor, interceptorDef);
}
mappedInterceptorDef.getConstructorArgumentValues().addIndexedArgumentValue(0, pathPatterns);
mappedInterceptorDef.getConstructorArgumentValues().addIndexedArgumentValue(1, interceptorDef);
String mappedInterceptorName = parserContext.getReaderContext().registerWithGeneratedName(mappedInterceptorDef);
parserContext.registerComponent(new BeanComponentDefinition(mappedInterceptorDef, mappedInterceptorName));
}
parserContext.popAndRegisterContainingComponent();
return null;
}
}
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