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