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Java > Open Source Codes > org > snipsnap > interceptor > custom > LogInterceptor


1 /*
2  * This file is part of "SnipSnap Wiki/Weblog".
3  *
4  * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
5  * All Rights Reserved.
6  *
7  * Please visit http://snipsnap.org/ for updates and contact.
8  *
9  * --LICENSE NOTICE--
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License
12  * as published by the Free Software Foundation; either version 2
13  * of the License, or (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23  * --LICENSE NOTICE--
24  */
25
26 package org.snipsnap.interceptor.custom;
27
28 import org.radeox.util.logging.Logger;
29 import org.snipsnap.interceptor.InterceptorSupport;
30 import org.snipsnap.interceptor.Invocation;
31
32 public class LogInterceptor extends InterceptorSupport {
33   public Object JavaDoc invoke(Invocation invocation) throws Throwable JavaDoc {
34     // before
35 Logger.debug(name + ": before " + invocation.getMethod().getName() + " ");
36     print(invocation.getArgs());
37     Object JavaDoc result = invocation.next();
38     // after
39 Logger.debug(name + ": after " + invocation.getMethod().getName());
40     if (null == result) {
41       System.out.println();
42     } else {
43       Logger.debug(" = "+result.toString());
44     }
45     return result;
46   }
47
48   private void print(Object JavaDoc[] args) {
49     System.out.print("[");
50     if (null != args) {
51       for (int i = 0; i < args.length; i++) {
52         Object JavaDoc object = args[i];
53         if (null == object) {
54           System.out.print("null");
55         } else {
56           String JavaDoc className = object.getClass().getName();
57           System.out.print(object.toString());
58           System.out.print("(");
59           System.out.print(className.substring(className.lastIndexOf(".") + 1) + ")");
60         }
61         if (i < args.length - 1) {
62           System.out.print(", ");
63         }
64
65       }
66     }
67     System.out.println("]");
68     return;
69   }
70 }
71
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