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Spring Framework example source code file (ProxyCreatorSupport.java)

This example Spring Framework source code file (ProxyCreatorSupport.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

advisedsupport, advisedsupportlistener, advisedsupportlistener, aopproxy, aopproxy, aopproxyfactory, aopproxyfactory, defaultaopproxyfactory, linkedlist, list, proxycreatorsupport, proxycreatorsupport, util

The Spring Framework ProxyCreatorSupport.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.util.LinkedList;
import java.util.List;

import org.springframework.util.Assert;

/**
 * Base class for proxy factories.
 * Provides convenient access to a configurable AopProxyFactory.
 *
 * @author Juergen Hoeller
 * @since 2.0.3
 * @see #createAopProxy()
 */
public class ProxyCreatorSupport extends AdvisedSupport {

	/** The AopProxyFactory to use */
	private AopProxyFactory aopProxyFactory;

	/** List of AdvisedSupportListener */
	private List listeners = new LinkedList();

	/** Set to true when the first AOP proxy has been created */
	private boolean active = false;


	/**
	 * Create a new ProxyCreatorSupport instance.
	 */
	public ProxyCreatorSupport() {
		this.aopProxyFactory = new DefaultAopProxyFactory();
	}

	/**
	 * Create a new ProxyCreatorSupport instance.
	 * @param aopProxyFactory the AopProxyFactory to use
	 */
	public ProxyCreatorSupport(AopProxyFactory aopProxyFactory) {
		Assert.notNull(aopProxyFactory, "AopProxyFactory must not be null");
		this.aopProxyFactory = aopProxyFactory;
	}


	/**
	 * Customize the AopProxyFactory, allowing different strategies
	 * to be dropped in without changing the core framework.
	 * <p>Default is {@link DefaultAopProxyFactory}, using dynamic JDK
	 * proxies or CGLIB proxies based on the requirements.
	 */
	public void setAopProxyFactory(AopProxyFactory aopProxyFactory) {
		Assert.notNull(aopProxyFactory, "AopProxyFactory must not be null");
		this.aopProxyFactory = aopProxyFactory;
	}

	/**
	 * Return the AopProxyFactory that this ProxyConfig uses.
	 */
	public AopProxyFactory getAopProxyFactory() {
		return this.aopProxyFactory;
	}

	/**
	 * Add the given AdvisedSupportListener to this proxy configuration.
	 * @param listener the listener to register
	 */
	public void addListener(AdvisedSupportListener listener) {
		Assert.notNull(listener, "AdvisedSupportListener must not be null");
		this.listeners.add(listener);
	}

	/**
	 * Remove the given AdvisedSupportListener from this proxy configuration.
	 * @param listener the listener to deregister
	 */
	public void removeListener(AdvisedSupportListener listener) {
		Assert.notNull(listener, "AdvisedSupportListener must not be null");
		this.listeners.remove(listener);
	}


	/**
	 * Subclasses should call this to get a new AOP proxy. They should <b>not
	 * create an AOP proxy with <code>this as an argument.
	 */
	protected final synchronized AopProxy createAopProxy() {
		if (!this.active) {
			activate();
		}
		return getAopProxyFactory().createAopProxy(this);
	}

	/**
	 * Activate this proxy configuration.
	 * @see AdvisedSupportListener#activated
	 */
	private void activate() {
		this.active = true;
		for (int i = 0; i < this.listeners.size(); i++) {
			((AdvisedSupportListener) this.listeners.get(i)).activated(this);
		}
	}

	/**
	 * Propagate advice change event to all AdvisedSupportListeners.
	 * @see AdvisedSupportListener#adviceChanged
	 */
	protected void adviceChanged() {
		super.adviceChanged();
		synchronized (this) {
			if (this.active) {
				for (int i = 0; i < this.listeners.size(); i++) {
					((AdvisedSupportListener) this.listeners.get(i)).adviceChanged(this);
				}
			}
		}
	}

	/**
	 * Subclasses can call this to check whether any AOP proxies have been created yet.
	 */
	protected final synchronized boolean isActive() {
		return this.active;
	}

}

Other Spring Framework examples (source code examples)

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



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