ExceptionInterceptor


1   /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10  * the License, or (at your option) any later version.
11  *
12  * This software is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with this software; if not, write to the Free
19  * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20  * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21  */
22  package org.jboss.naming.interceptors;
23  
24  import java.io.Externalizable  ;
25  import java.io.IOException  ;
26  
27  import javax.naming.CommunicationException  ;
28  import javax.naming.NamingException  ;
29  import javax.naming.ServiceUnavailableException  ;
30  
31  import org.jboss.invocation.Invocation;
32  import org.jboss.proxy.Interceptor;
33  
34  /** A client interceptor that handles the wrapping of exceptions to
35   * NamingExceptions
36   * 
37   * @author Scott.Stark@jboss.org
38   * @version $Revision: 37459 $
39   */
40  public class ExceptionInterceptor extends Interceptor
41     implements Externalizable  
42  {
43     /** The serialVersionUID. @since 1.1.2.1 */
44     private static final long serialVersionUID = 6010013004557885014L;
45  
46     /** Handle methods locally on the client
47      *
48      * @param mi
49      * @return
50      * @throws Throwable
51      */
52     public Object   invoke(Invocation mi) throws Throwable  
53     {
54        Object   value = null;
55        try
56        {
57           value = getNext().invoke(mi);
58        }
59        catch(NamingException   e)
60        {
61           throw e;
62        }
63        catch(IOException   e)
64        {
65           CommunicationException   ce = new CommunicationException  ("Operation failed");
66           ce.setRootCause(e);
67           throw ce;
68        }
69        catch(Throwable   t)
70        {
71           ServiceUnavailableException   sue = new ServiceUnavailableException  ("Unexpected failure");
72           sue.setRootCause(t);
73           throw sue;
74        }
75  
76        return value;
77     }
78  
79  }
80
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags