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 Sam
27: */
28:
29: package com.caucho.webbeans.bytecode;
30:
31: import java.lang.reflect.*;
32: import java.util.*;
33: import javax.interceptor.*;
34:
35: public class InvocationContextImpl implements InvocationContext {
36: private final Object _target;
37: private final Method _method;
38:
39: private final Method[] _chainMethods;
40: private final Object[] _chainObjects;
41:
42: private Object[] _param;
43:
44: private int _index;
45: private HashMap<String, Object> _map;
46:
47: public InvocationContextImpl(Object target, Method method,
48: Method[] chainMethods, Object[] chainObjects, Object[] param)
49: throws Exception {
50: _target = target;
51: _method = method;
52: _chainMethods = chainMethods;
53: _chainObjects = chainObjects;
54: _param = param;
55: }
56:
57: public Object getTarget() {
58: return _target;
59: }
60:
61: public Method getMethod() {
62: return _method;
63: }
64:
65: public Object[] getParameters() throws IllegalStateException {
66: return _param;
67: }
68:
69: public void setParameters(Object[] parameters)
70: throws IllegalStateException {
71: _param = parameters;
72: }
73:
74: public Map<String, Object> getContextData() {
75: if (_map == null)
76: _map = new HashMap<String, Object>();
77:
78: return _map;
79: }
80:
81: public Object proceed() throws Exception {
82: try {
83: if (_index < _chainMethods.length) {
84: int i = _index++;
85:
86: return _chainMethods[i].invoke(_chainObjects[i], this );
87: } else
88: return _method.invoke(_target, _param);
89: } catch (InvocationTargetException e) {
90: Throwable cause = e.getCause();
91:
92: if (cause instanceof Exception)
93: throw (Exception) cause;
94: else
95: throw e;
96: }
97: }
98: }
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