View Javadoc

1   /*
2    * Copyright 2006-2007 the original author or authors.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.springframework.batch.sample.common;
18  
19  import org.apache.commons.logging.Log;
20  import org.apache.commons.logging.LogFactory;
21  import org.aspectj.lang.JoinPoint;
22  
23  
24  /**
25   * Wraps calls for 'Processing' methods which output a single Object to write
26   * the string representation of the object to the log.
27   * 
28   * @author Lucas Ward
29   */
30  public class LogAdvice {
31      
32      private static Log log = LogFactory.getLog(LogAdvice.class);
33  
34      /*
35       * Wraps original method and adds logging both before and after method
36       */
37      public void doBasicLogging(JoinPoint pjp) throws Throwable {
38      	Object[] args = pjp.getArgs();
39      	StringBuffer output = new StringBuffer();
40  
41  		output.append(pjp.getTarget().getClass().getName()).append(": ");
42  		output.append(pjp.toShortString()).append(": ");
43  
44  		for (Object arg : args) {
45  			output.append(arg).append(" ");
46  		}
47  
48  
49  		log.info("Basic: " + output.toString());
50      }
51      
52      public void doStronglyTypedLogging(Object item){
53      	log.info("Processed: " + item);
54      }
55  
56  }