Spring Framework example source code file (AspectJWeaverMessageHandler.java)

This example Spring Framework source code file (AspectJWeaverMessageHandler.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

abortexception, abortexception, aj_id, aj_id, aspectj, aspectj, aspectjweavermessagehandler, imessagehandler, kind, log, logger, string, string, weaver

The Spring Framework AspectJWeaverMessageHandler.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.aspectj;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.aspectj.bridge.AbortException;
import org.aspectj.bridge.IMessage;
import org.aspectj.bridge.IMessage.Kind;
import org.aspectj.bridge.IMessageHandler;

/**
 * Implementation of AspectJ's {@link IMessageHandler} interface that
 * routes AspectJ weaving messages through the same logging system as the
 * regular Spring messages.
 * 
 * <p>Pass the option...
 *
 * <p>-XmessageHandlerClass:org.springframework.aop.aspectj.AspectJWeaverMessageHandler
 *
 * <p>to the weaver; for example, specifying the following in a
 * "<code>META-INF/aop.xml file:
 *
 * <p><weaver options="..."/>
 *
 * @author Adrian Colyer
 * @author Juergen Hoeller
 * @since 2.0
 */
public class AspectJWeaverMessageHandler implements IMessageHandler {

	private static final String AJ_ID = "[AspectJ] ";
	
	private static final Log LOGGER = LogFactory.getLog("AspectJ Weaver");
	

	public boolean handleMessage(IMessage message) throws AbortException {
		Kind messageKind = message.getKind();

		if (LOGGER.isDebugEnabled() || LOGGER.isTraceEnabled()) {
			if (messageKind == IMessage.DEBUG) {
				LOGGER.debug(makeMessageFor(message));
				return true;
			}
		} 
		
		if (LOGGER.isInfoEnabled()) {
			if ((messageKind == IMessage.INFO) || (messageKind == IMessage.WEAVEINFO)) {
				LOGGER.info(makeMessageFor(message));
				return true;
			}
		} 
		
		if (LOGGER.isWarnEnabled()) {
			if (messageKind == IMessage.WARNING) {
				LOGGER.warn(makeMessageFor(message));
				return true;
			}
		}
		
		if (LOGGER.isErrorEnabled()) {
			if (messageKind == IMessage.ERROR) {
				LOGGER.error(makeMessageFor(message));
				return true;
			}
		}
		
		if (LOGGER.isFatalEnabled()) {
			if (messageKind == IMessage.ABORT) {
				LOGGER.fatal(makeMessageFor(message));
				return true;
			}
		}
		
		return false;
	}
	
	private String makeMessageFor(IMessage aMessage) {
		return AJ_ID + aMessage.getMessage();
	}

	public boolean isIgnoring(Kind messageKind) {
		// We want to see everything, and allow configuration of log levels dynamically.
		return false;
	}

	public void dontIgnore(Kind messageKind) {
		// We weren't ignoring anything anyway...
	}

	public void ignore(Kind kind) {
		// We weren't ignoring anything anyway...
	}

}