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Spring Framework example source code file (DefaultAdvisorChainFactory.java)

This example Spring Framework source code file (DefaultAdvisorChainFactory.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

advisor, advisor, advisoradapterregistry, class, defaultadvisorchainfactory, interceptor, interceptor, introductionadvisor, introductionadvisor, io, list, methodmatcher, pointcutadvisor, pointcutadvisor, reflection, serializable, util

The Spring Framework DefaultAdvisorChainFactory.java source code

/*
 * Copyright 2002-2007 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.aop.framework;

import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.aopalliance.intercept.Interceptor;
import org.aopalliance.intercept.MethodInterceptor;

import org.springframework.aop.Advisor;
import org.springframework.aop.IntroductionAdvisor;
import org.springframework.aop.MethodMatcher;
import org.springframework.aop.PointcutAdvisor;
import org.springframework.aop.framework.adapter.AdvisorAdapterRegistry;
import org.springframework.aop.framework.adapter.GlobalAdvisorAdapterRegistry;
import org.springframework.aop.support.MethodMatchers;

/**
 * A simple but definitive way of working out an advice chain for a Method,
 * given an {@link Advised} object. Always rebuilds each advice chain;
 * caching can be provided by subclasses.
 *
 * @author Juergen Hoeller
 * @author Rod Johnson
 * @author Adrian Colyer
 * @since 2.0.3
 */
public class DefaultAdvisorChainFactory implements AdvisorChainFactory, Serializable {

	public List getInterceptorsAndDynamicInterceptionAdvice(Advised config, Method method, Class targetClass) {
		// This is somewhat tricky... we have to process introductions first,
		// but we need to preserve order in the ultimate list.
		List interceptorList = new ArrayList(config.getAdvisors().length);
		boolean hasIntroductions = hasMatchingIntroductions(config, targetClass);
		AdvisorAdapterRegistry registry = GlobalAdvisorAdapterRegistry.getInstance();
		Advisor[] advisors = config.getAdvisors();
		for (int i = 0; i < advisors.length; i++) {
			Advisor advisor = advisors[i];
			if (advisor instanceof PointcutAdvisor) {
				// Add it conditionally.
				PointcutAdvisor pointcutAdvisor = (PointcutAdvisor) advisor;
				if (config.isPreFiltered() || pointcutAdvisor.getPointcut().getClassFilter().matches(targetClass)) {
					MethodInterceptor[] interceptors = registry.getInterceptors(advisor);
					MethodMatcher mm = pointcutAdvisor.getPointcut().getMethodMatcher();
					if (MethodMatchers.matches(mm, method, targetClass, hasIntroductions)) {
						if (mm.isRuntime()) {
							// Creating a new object instance in the getInterceptors() method
							// isn't a problem as we normally cache created chains.
							for (int j = 0; j < interceptors.length; j++) {
								interceptorList.add(new InterceptorAndDynamicMethodMatcher(interceptors[j], mm));
							}
						}
						else {
							interceptorList.addAll(Arrays.asList(interceptors));
						}
					}
				}
			}
			else if (advisor instanceof IntroductionAdvisor) {
				IntroductionAdvisor ia = (IntroductionAdvisor) advisor;
				if (config.isPreFiltered() || ia.getClassFilter().matches(targetClass)) {
					Interceptor[] interceptors = registry.getInterceptors(advisor);
					interceptorList.addAll(Arrays.asList(interceptors));
				}
			}
			else {
				Interceptor[] interceptors = registry.getInterceptors(advisor);
				interceptorList.addAll(Arrays.asList(interceptors));
			}
		}
		return interceptorList;
	}

	/**
	 * Determine whether the Advisors contain matching introductions.
	 */
	private static boolean hasMatchingIntroductions(Advised config, Class targetClass) {
		for (int i = 0; i < config.getAdvisors().length; i++) {
			Advisor advisor = config.getAdvisors()[i];
			if (advisor instanceof IntroductionAdvisor) {
				IntroductionAdvisor ia = (IntroductionAdvisor) advisor;
				if (ia.getClassFilter().matches(targetClass)) {
					return true;
				}
			}
		}
		return false;
	}

}

Other Spring Framework examples (source code examples)

Here is a short list of links related to this Spring Framework DefaultAdvisorChainFactory.java source code file:

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