01: /*
02: * Copyright 1999-2004 The Apache Software Foundation
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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.Enumeration;
19: import java.util.HashSet;
20:
21: import javax.servlet.ServletRequest;
22:
23: /**
24: * Implementation of the DynamicPropertyHandler interface that provides
25: * access to attributes and parameters of a ServletRequest.
26: *
27: * @author Dmitri Plotnikov
28: * @version $Revision: 1.6 $ $Date: 2004/05/08 15:10:49 $
29: */
30: public class ServletRequestHandler extends HttpSessionHandler {
31:
32: protected void collectPropertyNames(HashSet set, Object bean) {
33: super .collectPropertyNames(set, bean);
34: ServletRequestAndContext handle = (ServletRequestAndContext) bean;
35: ServletRequest servletRequest = handle.getServletRequest();
36: Enumeration e = servletRequest.getAttributeNames();
37: while (e.hasMoreElements()) {
38: set.add(e.nextElement());
39: }
40: e = servletRequest.getParameterNames();
41: while (e.hasMoreElements()) {
42: set.add(e.nextElement());
43: }
44: }
45:
46: public Object getProperty(Object bean, String property) {
47: ServletRequestAndContext handle = (ServletRequestAndContext) bean;
48: ServletRequest servletRequest = handle.getServletRequest();
49: String[] strings = servletRequest.getParameterValues(property);
50: if (strings != null) {
51: if (strings.length == 0) {
52: return null;
53: }
54: if (strings.length == 1) {
55: return strings[0];
56: }
57: return strings;
58: }
59:
60: Object object = servletRequest.getAttribute(property);
61: if (object != null) {
62: return object;
63: }
64:
65: return super .getProperty(bean, property);
66: }
67:
68: public void setProperty(Object request, String property,
69: Object value) {
70: ((ServletRequest) request).setAttribute(property, value);
71: }
72: }
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