1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  /**
24   * The contents of this file are subject to the terms of the Common Development
25   * and Distribution License (the License). You may not use this file except in
26   * compliance with the License.
27   *
28   * You can obtain a copy of the License at http://www.sun.com/cddl/cddl.html and
29   * legal/CDDLv1.0.txt. See the License for the specific language governing
30   * permission and limitations under the License.
31   *
32   * When distributing Covered Code, include this CDDL Header Notice in each file
33   * and include the License file at legal/CDDLv1.0.txt.
34   *
35   * If applicable, add the following below the CDDL Header, with the fields
36   * enclosed by brackets [] replaced by your own identifying information:
37   * "Portions Copyrighted [year] [name of copyright owner]"
38   *
39   * Copyright 2008 Sun Microsystems Inc. All rights reserved.
40   */
41  
42  package com.liferay.portal.spring.aop;
43  
44  import java.lang.reflect.Method;
45  
46  import java.util.HashMap;
47  import java.util.Map;
48  
49  import org.apache.commons.logging.Log;
50  import org.apache.commons.logging.LogFactory;
51  
52  import org.springframework.aop.AfterReturningAdvice;
53  import org.springframework.aop.MethodBeforeAdvice;
54  
55  /**
56   * <a href="LogInterceptor.java.html"><b><i>View Source</i></b></a>
57   *
58   * @author Karthik Sudarshan
59   * @author Brian Wing Shun Chan
60   *
61   */
62  public class LogInterceptor
63      implements AfterReturningAdvice, MethodBeforeAdvice {
64  
65      public void afterReturning(
66              Object returnValue, Method method, Object[] args, Object target)
67          throws Throwable {
68  
69          Log log = getLog(method);
70  
71          if (log.isInfoEnabled()) {
72              log.info("After " + method.getName());
73          }
74      }
75  
76      public void before(Method method, Object[] args, Object target)
77          throws Throwable {
78  
79          Log log = getLog(method);
80  
81          if (log.isInfoEnabled()) {
82              log.info("Before " + method.getName());
83          }
84      }
85  
86      protected Log getLog(Method method) {
87          Class classObj = method.getDeclaringClass();
88  
89          Log log = _logs.get(classObj.getName());
90  
91          if (log == null) {
92              log = LogFactory.getLog(classObj);
93  
94              _logs.put(classObj.getName(), log);
95          }
96  
97          return log;
98      }
99  
100     private static Map<String, Log> _logs = new HashMap<String, Log>();
101 
102 }