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Java > Open Source Codes > net > sf > jguard > ext > util > ThrowableUtils


1 /*
2 jGuard is a security framework based on top of jaas (java authentication and authorization security).
3 it is written for web applications, to resolve simply, access control problems.
4 version $Name$
5 http://sourceforge.net/projects/jguard/
6
7 Copyright (C) 2004 Charles GAY
8
9 This library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
13
14 This library is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public
20 License along with this library; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22
23
24 jGuard project home page:
25 http://sourceforge.net/projects/jguard/
26
27 */

28 package net.sf.jguard.ext.util;
29
30 import java.lang.reflect.Constructor JavaDoc;
31 import java.lang.reflect.InvocationTargetException JavaDoc;
32 import java.util.Locale JavaDoc;
33 import java.util.ResourceBundle JavaDoc;
34
35
36 import org.apache.commons.logging.Log;
37 import org.apache.commons.logging.LogFactory;
38
39 /**
40  * Utility class for Throwable.
41  * @author <a HREF="mailto:diabolo512@users.sourceforge.net">Charles Gay</a>
42  *
43  */

44 public class ThrowableUtils {
45     
46     private static final Log logger = LogFactory.getLog(ThrowableUtils.class);
47     
48     /**
49      * add Localization for Throwable thrown.
50      * @param le
51      * @return
52      */

53     public static Throwable JavaDoc localizeThrowable(Throwable JavaDoc le,Locale JavaDoc locale) {
54         //authentication failed
55
logger.error("authentication failed.LoginException "+le.getMessage(),le);
56             Class JavaDoc throwableClass = le.getClass();
57             Class JavaDoc[] clazz = new Class JavaDoc[]{String JavaDoc.class};
58             try {
59                 Constructor JavaDoc constructor = throwableClass.getConstructor(clazz);
60                 ResourceBundle JavaDoc rb = ResourceBundleUtils.getResourceBundle(locale);
61                 Throwable JavaDoc localizedThrowable = new LocalizedThrowable(le,rb);
62                 Object JavaDoc[] objects = new Object JavaDoc[]{localizedThrowable.getLocalizedMessage()};
63                 Throwable JavaDoc throwable = (Throwable JavaDoc) constructor.newInstance(objects);
64                 return throwable;
65             } catch (SecurityException JavaDoc e) {
66                 logger.error("we cannot localize LoginException for security resitrictions");
67                 return le;
68             } catch (NoSuchMethodException JavaDoc e) {
69                 logger.error("we cannot localize LoginException method not found ");
70                 return le;
71             } catch (IllegalArgumentException JavaDoc e) {
72                 logger.error("we cannot localize LoginException arguments are illegal ");
73                 return le;
74             } catch (InstantiationException JavaDoc e) {
75                 logger.error("we cannot localize LoginException we cannot instantiate the wrapped exception ");
76                 return le;
77             } catch (IllegalAccessException JavaDoc e) {
78                 logger.error("we cannot localize LoginException we cannot access to the exception ");
79                 return le;
80             } catch (InvocationTargetException JavaDoc e) {
81                 logger.error("we cannot localize LoginException we cannot invoke the exception ");
82                 return le;
83             }
84     }
85     
86     
87     
88 }
89
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