Spring Framework example source code file (NopInterceptor.java)

This example Spring Framework source code file (NopInterceptor.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

methodinterceptor, methodinterceptor, nopinterceptor, nopinterceptor, object, object, throwable, throwable

The Spring Framework NopInterceptor.java source code

/*
 * Copyright 2002-2005 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.interceptor;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

/**
 * Trivial interceptor that can be introduced in a chain to display it.
 *
 * @author Rod Johnson
 */
public class NopInterceptor implements MethodInterceptor {
	
	private int count;

	/**
	 * @see org.aopalliance.intercept.MethodInterceptor#invoke(MethodInvocation)
	 */
	public Object invoke(MethodInvocation invocation) throws Throwable {
		increment();
		return invocation.proceed();
	}
	
	public int getCount() {
		return this.count;
	}
	
	protected void increment() {
		++count;
	}

	public boolean equals(Object other) {
		if (!(other instanceof NopInterceptor)) {
			return false;
		}
		if (this == other) {
			return true;
		}
		return this.count == ((NopInterceptor) other).count;
	}

}