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.webbeans.component;
31:
32: import com.caucho.config.ConfigContext;
33: import java.lang.annotation.*;
34: import javax.webbeans.*;
35:
36: import com.caucho.webbeans.cfg.WbWebBeans;
37: import com.caucho.webbeans.context.*;
38: import com.caucho.webbeans.manager.*;
39:
40: /**
41: * Component for a singleton beans
42: */
43: abstract public class FactoryComponent extends ComponentImpl {
44: public FactoryComponent(Class targetType, String name) {
45: super (WebBeansContainer.create().getWbWebBeans());
46:
47: setTargetType(targetType);
48: setName(name);
49: addNameBinding(name);
50: setType(_webbeans.createComponentType(Component.class));
51: }
52:
53: @Override
54: public void setScope(ScopeContext scope) {
55: }
56:
57: @Override
58: public Object get() {
59: return get(null);
60: }
61:
62: @Override
63: public Object get(ConfigContext env) {
64: if (env != null) {
65: Object value = env.get(this );
66:
67: if (value != null)
68: return value;
69:
70: value = create();
71:
72: env.put(this , value);
73:
74: return value;
75: } else
76: return create();
77: }
78:
79: abstract public Object create();
80: }
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