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: *
23: * Free Software Foundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Scott Ferguson;
28: */
29:
30: package com.caucho.config.program;
31:
32: import com.caucho.config.*;
33: import com.caucho.config.j2ee.*;
34: import com.caucho.config.program.ConfigProgram;
35: import com.caucho.webbeans.component.*;
36: import com.caucho.webbeans.context.DependentScope;
37:
38: import java.util.logging.*;
39: import java.lang.reflect.*;
40:
41: public class MethodComponentProgram extends ConfigProgram {
42: private static final Logger log = Logger
43: .getLogger(MethodComponentProgram.class.getName());
44:
45: private static final Object[] NULL_ARGS = new Object[0];
46:
47: private Method _method;
48: private ComponentImpl[] _args;
49:
50: public MethodComponentProgram(Method method, ComponentImpl[] args) {
51: _method = method;
52: _method.setAccessible(true);
53: _args = args;
54:
55: if (_method == null)
56: throw new NullPointerException();
57:
58: for (int i = 0; i < args.length; i++)
59: if (args[i] == null)
60: throw new NullPointerException();
61: }
62:
63: @Override
64: public void inject(Object bean, ConfigContext env)
65: throws ConfigException {
66: try {
67: Object[] args;
68:
69: if (_args.length > 0) {
70: args = new Object[_args.length];
71:
72: for (int i = 0; i < args.length; i++)
73: args[i] = _args[i].get(env);
74: } else
75: args = NULL_ARGS;
76:
77: _method.invoke(bean, args);
78: } catch (InvocationTargetException e) {
79: throw LineConfigException.create(loc(), e);
80: } catch (Exception e) {
81: throw LineConfigException.create(loc(), e);
82: }
83: }
84:
85: private String loc() {
86: return (_method.getDeclaringClass().getSimpleName() + "."
87: + _method.getName() + ": ");
88: }
89: }
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