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Java > Open Source Codes > org > apache > commons > jxpath > servlet > PageScopeContextHandler


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.commons.jxpath.servlet;
17
18 import java.util.ArrayList JavaDoc;
19 import java.util.Enumeration JavaDoc;
20
21 import org.apache.commons.jxpath.DynamicPropertyHandler;
22
23 /**
24  * Implementation of the DynamicPropertyHandler interface that provides
25  * access to attributes of a PageScopeContext.
26  *
27  * @author Dmitri Plotnikov
28  * @version $Revision: 1.6 $ $Date: 2004/05/08 15:10:49 $
29  */
30 public class PageScopeContextHandler implements DynamicPropertyHandler {
31     
32     private static final String JavaDoc[] STRING_ARRAY = new String JavaDoc[0];
33
34     public String JavaDoc[] getPropertyNames(Object JavaDoc pageScope) {
35         Enumeration JavaDoc e = ((PageScopeContext) pageScope).getAttributeNames();
36         ArrayList JavaDoc list = new ArrayList JavaDoc(16);
37         while (e.hasMoreElements()) {
38             list.add(e.nextElement());
39         }
40         return (String JavaDoc[]) list.toArray(STRING_ARRAY);
41     }
42
43     public Object JavaDoc getProperty(Object JavaDoc pageScope, String JavaDoc property) {
44         return ((PageScopeContext) pageScope).getAttribute(property);
45     }
46
47     public void setProperty(Object JavaDoc pageScope, String JavaDoc property, Object JavaDoc value) {
48         ((PageScopeContext) pageScope).setAttribute(property, value);
49     }
50 }
51
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