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.context;
31:
32: import com.caucho.loader.*;
33: import com.caucho.server.webapp.WebApp;
34: import com.caucho.webbeans.component.*;
35:
36: import javax.servlet.*;
37: import javax.servlet.http.*;
38: import javax.webbeans.*;
39:
40: /**
41: * The application scope value
42: */
43: public class ApplicationScope extends ScopeContext {
44: public <T> T get(ComponentFactory<T> component, boolean create) {
45: WebApp webApp = WebApp.getLocal();
46:
47: if (webApp != null) {
48: ComponentImpl comp = (ComponentImpl) component;
49:
50: return (T) webApp.getAttribute(comp.getScopeId());
51: } else
52: return null;
53: }
54:
55: public <T> void put(ComponentFactory<T> component, T value) {
56: WebApp webApp = WebApp.getLocal();
57:
58: if (webApp != null) {
59: ComponentImpl comp = (ComponentImpl) component;
60:
61: webApp.setAttribute(comp.getScopeId(), value);
62: }
63: }
64:
65: public <T> void remove(ComponentFactory<T> component) {
66: WebApp webApp = WebApp.getLocal();
67:
68: if (webApp != null) {
69: ComponentImpl comp = (ComponentImpl) component;
70:
71: webApp.removeAttribute(comp.getScopeId());
72: }
73: }
74:
75: @Override
76: public boolean canInject(ScopeContext scope) {
77: return (scope instanceof SingletonScope || scope instanceof ApplicationScope);
78: }
79:
80: public void addDestructor(ComponentImpl comp, Object value) {
81: EnvironmentClassLoader loader = Environment
82: .getEnvironmentClassLoader();
83:
84: if (loader != null) {
85: DestructionListener listener = (DestructionListener) loader
86: .getAttribute("caucho.destroy");
87:
88: if (listener == null) {
89: listener = new DestructionListener();
90: loader.setAttribute("caucho.destroy", listener);
91: loader.addListener(listener);
92: }
93:
94: listener.addValue(comp, value);
95: }
96: }
97: }
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