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Java > Open Source Codes > com > caucho > ejb > hessian > ThrowableDeserializer


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source 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, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.ejb.hessian;
30
31 import com.caucho.hessian.io.JavaDeserializer;
32
33 import java.lang.reflect.Constructor JavaDoc;
34
35 /**
36  * Serializing an object for known object types.
37  */
38 public class ThrowableDeserializer extends JavaDeserializer {
39   private Constructor JavaDoc constructor;
40   
41   public ThrowableDeserializer(Class JavaDoc cl)
42   {
43     super(cl);
44
45     try {
46       Constructor JavaDoc zeroArg = cl.getConstructor(new Class JavaDoc[0]);
47       if (zeroArg != null)
48         return;
49     } catch (Exception JavaDoc e) {
50     }
51
52     try {
53       constructor = cl.getConstructor(new Class JavaDoc[] { String JavaDoc.class });
54     } catch (Exception JavaDoc e) {
55     }
56   }
57
58   protected Object JavaDoc instantiate()
59     throws Exception JavaDoc
60   {
61     if (constructor != null)
62       return constructor.newInstance(new Object JavaDoc[1]);
63     else
64       return super.instantiate();
65   }
66 }
67
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