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Spring Framework example source code file (TestNamespaceHandler.java)

This example Spring Framework source code file (TestNamespaceHandler.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

abstractinterceptordrivenbeandefinitiondecorator, beandefinition, beandefinition, beandefinitiondecorator, beandefinitionholder, beandefinitionholder, debugbeandefinitiondecorator, dom, mutablepropertyvalues, mutablepropertyvalues, objectnamebeandefinitiondecorator, parsercontext, parsercontext, persondefinitionparser, testbeandefinitionparser

The Spring Framework TestNamespaceHandler.java source code

/*
 * Copyright 2002-2006 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.beans.factory.xml.support;

import org.springframework.aop.config.AbstractInterceptorDrivenBeanDefinitionDecorator;
import org.springframework.aop.interceptor.DebugInterceptor;
import org.springframework.aop.interceptor.NopInterceptor;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.TestBean;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.BeanDefinitionDecorator;
import org.springframework.beans.factory.xml.BeanDefinitionParser;
import org.springframework.beans.factory.xml.NamespaceHandlerSupport;
import org.springframework.beans.factory.xml.ParserContext;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

/**
 * @author Rob Harrop
 */
public class TestNamespaceHandler extends NamespaceHandlerSupport {

	public void init() {
		registerBeanDefinitionParser("testBean", new TestBeanDefinitionParser());
		registerBeanDefinitionParser("person", new PersonDefinitionParser());

		registerBeanDefinitionDecorator("set", new PropertyModifyingBeanDefinitionDecorator());
		registerBeanDefinitionDecorator("debug", new DebugBeanDefinitionDecorator());
		registerBeanDefinitionDecorator("nop", new NopInterceptorBeanDefinitionDecorator());
		registerBeanDefinitionDecoratorForAttribute("object-name", new ObjectNameBeanDefinitionDecorator());
	}

	private static class TestBeanDefinitionParser implements BeanDefinitionParser {

		public BeanDefinition parse(Element element, ParserContext parserContext) {
			RootBeanDefinition definition = new RootBeanDefinition();
			definition.setBeanClass(TestBean.class);

			MutablePropertyValues mpvs = new MutablePropertyValues();
			mpvs.addPropertyValue("name", element.getAttribute("name"));
			mpvs.addPropertyValue("age", element.getAttribute("age"));
			definition.setPropertyValues(mpvs);

			parserContext.getRegistry().registerBeanDefinition(element.getAttribute("id"), definition);

			return null;
		}
	}

	private static final class PersonDefinitionParser extends AbstractSingleBeanDefinitionParser {

		protected Class getBeanClass(Element element) {
			return TestBean.class;
		}

		protected void doParse(Element element, BeanDefinitionBuilder builder) {
			builder.addPropertyValue("name", element.getAttribute("name"));
			builder.addPropertyValue("age", element.getAttribute("age"));
		}
	}

	private static class PropertyModifyingBeanDefinitionDecorator implements BeanDefinitionDecorator {

		public BeanDefinitionHolder decorate(Node node, BeanDefinitionHolder definition, ParserContext parserContext) {
			Element element = (Element) node;
			BeanDefinition def = definition.getBeanDefinition();

			MutablePropertyValues mpvs = (def.getPropertyValues() == null) ? new MutablePropertyValues() : def.getPropertyValues();
			mpvs.addPropertyValue("name", element.getAttribute("name"));
			mpvs.addPropertyValue("age", element.getAttribute("age"));

			((AbstractBeanDefinition) def).setPropertyValues(mpvs);
			return definition;
		}
	}

	private static class DebugBeanDefinitionDecorator extends AbstractInterceptorDrivenBeanDefinitionDecorator {

		protected BeanDefinition createInterceptorDefinition(Node node) {
			return new RootBeanDefinition(DebugInterceptor.class);
		}
	}

	private static class NopInterceptorBeanDefinitionDecorator extends AbstractInterceptorDrivenBeanDefinitionDecorator {

		protected BeanDefinition createInterceptorDefinition(Node node) {
			return new RootBeanDefinition(NopInterceptor.class);
		}
	}

	private static class ObjectNameBeanDefinitionDecorator implements BeanDefinitionDecorator {

		public BeanDefinitionHolder decorate(Node node, BeanDefinitionHolder definition, ParserContext parserContext) {
			Attr objectNameAttribute = (Attr) node;
			definition.getBeanDefinition().setAttribute("objectName", objectNameAttribute.getValue());
			return definition;
		}
	}
}

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