| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| VariableResolverImpl |
|
| 12.0;12 |
| 1 | /* | |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more | |
| 3 | * contributor license agreements. See the NOTICE file distributed with | |
| 4 | * this work for additional information regarding copyright ownership. | |
| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 | |
| 6 | * (the "License"); you may not use this file except in compliance with | |
| 7 | * the License. You may obtain a copy of the License at | |
| 8 | * | |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 | * | |
| 11 | * Unless required by applicable law or agreed to in writing, software | |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 | * See the License for the specific language governing permissions and | |
| 15 | * limitations under the License. | |
| 16 | */ | |
| 17 | package org.apache.commons.el; | |
| 18 | ||
| 19 | import javax.servlet.jsp.PageContext; | |
| 20 | import javax.servlet.jsp.el.ELException; | |
| 21 | import javax.servlet.jsp.el.VariableResolver; | |
| 22 | ||
| 23 | /** | |
| 24 | * | |
| 25 | * <p>This is the JSTL-specific implementation of VariableResolver. | |
| 26 | * It looks up variable references in the PageContext, and also | |
| 27 | * recognizes references to implicit objects. | |
| 28 | * | |
| 29 | * @author Nathan Abramson - Art Technology Group | |
| 30 | * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: mbenson $ | |
| 31 | **/ | |
| 32 | ||
| 33 | public class VariableResolverImpl | |
| 34 | implements VariableResolver | |
| 35 | { | |
| 36 | //------------------------------------- | |
| 37 | // Member variables | |
| 38 | //------------------------------------- | |
| 39 | ||
| 40 | private PageContext mCtx; | |
| 41 | ||
| 42 | //------------------------------------- | |
| 43 | /** | |
| 44 | * | |
| 45 | * Constructor | |
| 46 | **/ | |
| 47 | public VariableResolverImpl (PageContext pCtx) | |
| 48 | 0 | { |
| 49 | 0 | mCtx = pCtx; |
| 50 | 0 | } |
| 51 | ||
| 52 | //------------------------------------- | |
| 53 | /** | |
| 54 | * | |
| 55 | * Resolves the specified variable within the given context. | |
| 56 | * Returns null if the variable is not found. | |
| 57 | **/ | |
| 58 | public Object resolveVariable (String pName) | |
| 59 | throws ELException | |
| 60 | { | |
| 61 | // Check for implicit objects | |
| 62 | 0 | if ("pageContext".equals (pName)) { |
| 63 | 0 | return mCtx; |
| 64 | } | |
| 65 | 0 | else if ("pageScope".equals (pName)) { |
| 66 | 0 | return ImplicitObjects. |
| 67 | getImplicitObjects (mCtx). | |
| 68 | getPageScopeMap (); | |
| 69 | } | |
| 70 | 0 | else if ("requestScope".equals (pName)) { |
| 71 | 0 | return ImplicitObjects. |
| 72 | getImplicitObjects (mCtx). | |
| 73 | getRequestScopeMap (); | |
| 74 | } | |
| 75 | 0 | else if ("sessionScope".equals (pName)) { |
| 76 | 0 | return ImplicitObjects. |
| 77 | getImplicitObjects (mCtx). | |
| 78 | getSessionScopeMap (); | |
| 79 | } | |
| 80 | 0 | else if ("applicationScope".equals (pName)) { |
| 81 | 0 | return ImplicitObjects. |
| 82 | getImplicitObjects (mCtx). | |
| 83 | getApplicationScopeMap (); | |
| 84 | } | |
| 85 | 0 | else if ("param".equals (pName)) { |
| 86 | 0 | return ImplicitObjects. |
| 87 | getImplicitObjects (mCtx). | |
| 88 | getParamMap (); | |
| 89 | } | |
| 90 | 0 | else if ("paramValues".equals (pName)) { |
| 91 | 0 | return ImplicitObjects. |
| 92 | getImplicitObjects (mCtx). | |
| 93 | getParamsMap (); | |
| 94 | } | |
| 95 | 0 | else if ("header".equals (pName)) { |
| 96 | 0 | return ImplicitObjects. |
| 97 | getImplicitObjects (mCtx). | |
| 98 | getHeaderMap (); | |
| 99 | } | |
| 100 | 0 | else if ("headerValues".equals (pName)) { |
| 101 | 0 | return ImplicitObjects. |
| 102 | getImplicitObjects (mCtx). | |
| 103 | getHeadersMap (); | |
| 104 | } | |
| 105 | 0 | else if ("initParam".equals (pName)) { |
| 106 | 0 | return ImplicitObjects. |
| 107 | getImplicitObjects (mCtx). | |
| 108 | getInitParamMap (); | |
| 109 | } | |
| 110 | 0 | else if ("cookie".equals (pName)) { |
| 111 | 0 | return ImplicitObjects. |
| 112 | getImplicitObjects (mCtx). | |
| 113 | getCookieMap (); | |
| 114 | } | |
| 115 | ||
| 116 | // Otherwise, just look it up in the page context | |
| 117 | else { | |
| 118 | 0 | return mCtx.findAttribute (pName); |
| 119 | } | |
| 120 | } | |
| 121 | ||
| 122 | //------------------------------------- | |
| 123 | } |