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;
31:
32: import com.caucho.el.StackELResolver;
33: import com.caucho.el.SystemPropertiesResolver;
34: import com.caucho.webbeans.el.WebBeansContextResolver;
35:
36: import javax.el.*;
37:
38: /**
39: * Creates a variable resolver based on the classloader.
40: */
41: public class ConfigELContext extends ELContext {
42: private static final StackELResolver _stackResolver;
43:
44: private ELResolver _resolver = _stackResolver;
45:
46: /**
47: * Creates the resolver
48: */
49: public ConfigELContext() {
50: }
51:
52: /**
53: * Creates the resolver
54: */
55: public ConfigELContext(ELResolver resolver) {
56: _resolver = new StackELResolver(resolver, _resolver);
57: }
58:
59: @Override
60: public ELResolver getELResolver() {
61: return _resolver;
62: }
63:
64: @Override
65: public FunctionMapper getFunctionMapper() {
66: return null;
67: }
68:
69: @Override
70: public VariableMapper getVariableMapper() {
71: return null;
72: }
73:
74: public String toString() {
75: return "ConfigELContext[]";
76: }
77:
78: static {
79: _stackResolver = new StackELResolver();
80: _stackResolver.push(new BeanELResolver());
81: _stackResolver.push(new ArrayELResolver());
82: _stackResolver.push(new MapELResolver());
83: _stackResolver.push(new ListELResolver());
84:
85: _stackResolver.push(new SystemPropertiesResolver());
86: _stackResolver.push(new WebBeansContextResolver());
87: }
88: }
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