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.jsp.el;
31:
32: import com.caucho.el.*;
33: import com.caucho.jsp.PageContextImpl;
34: import com.caucho.vfs.WriteStream;
35: import com.caucho.util.*;
36:
37: import javax.el.*;
38: import javax.servlet.ServletContext;
39: import javax.servlet.http.Cookie;
40: import javax.servlet.http.HttpServletRequest;
41: import javax.servlet.jsp.PageContext;
42: import java.io.IOException;
43: import java.util.*;
44:
45: public class HeaderValuesFieldExpression extends
46: AbstractValueExpression {
47: private String _field;
48:
49: HeaderValuesFieldExpression(String field) {
50: _field = field;
51: }
52:
53: /**
54: * Evaluate the expr as an object.
55: *
56: * @param env the page context
57: */
58: @Override
59: public Object getValue(ELContext env) throws ELException {
60: if (!(env instanceof ServletELContext)) {
61: ELResolver elResolver = env.getELResolver();
62: Object base = elResolver
63: .getValue(env, null, "headerValues");
64:
65: return elResolver.getValue(env, base, _field);
66: }
67:
68: ServletELContext servletEnv = (ServletELContext) env;
69:
70: return servletEnv.getHeaderValues(_field);
71: }
72:
73: public String getExpressionString() {
74: return "headerValues['" + _field + "']";
75: }
76: }
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