01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * 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;
34:
35: /**
36: * Serializing an object for known object types.
37: */
38: public class ThrowableDeserializer extends JavaDeserializer {
39: private Constructor constructor;
40:
41: public ThrowableDeserializer(Class cl) {
42: super (cl);
43:
44: try {
45: Constructor zeroArg = cl.getConstructor(new Class[0]);
46: if (zeroArg != null)
47: return;
48: } catch (Exception e) {
49: }
50:
51: try {
52: constructor = cl
53: .getConstructor(new Class[] { String.class });
54: } catch (Exception e) {
55: }
56: }
57:
58: protected Object instantiate() throws Exception {
59: if (constructor != null)
60: return constructor.newInstance(new Object[1]);
61: else
62: return super.instantiate();
63: }
64: }
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