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 SoftwareFoundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Scott Ferguson
28: */
29:
30: package com.caucho.el;
31:
32: import javax.el.*;
33: import java.util.Map;
34:
35: /**
36: * Creates a variable resolver based on the classloader.
37: */
38: public class EnvironmentContext extends ELContext {
39: private final StackELResolver _elResolver = new StackELResolver();
40:
41: /**
42: * Creates the resolver
43: */
44: public EnvironmentContext() {
45: this (Thread.currentThread().getContextClassLoader());
46: }
47:
48: /**
49: * Creates the resolver
50: */
51: public EnvironmentContext(ClassLoader loader) {
52: _elResolver.push(new ArrayELResolver());
53: _elResolver.push(new MapELResolver());
54: _elResolver.push(new ListELResolver());
55: _elResolver.push(new BeanELResolver());
56: _elResolver.push(new SystemPropertiesResolver());
57:
58: _elResolver.push(EnvironmentELResolver.create(loader));
59: }
60:
61: /**
62: * Creates the resolver
63: */
64: public EnvironmentContext(Map<String, Object> map) {
65: this ();
66:
67: _elResolver.push(new MapVariableResolver(map));
68: }
69:
70: public ELResolver getELResolver() {
71: return _elResolver;
72: }
73:
74: public FunctionMapper getFunctionMapper() {
75: return null;
76: }
77:
78: public VariableMapper getVariableMapper() {
79: return null;
80: }
81: }
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