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1
16 package org.apache.commons.chain.web.portlet;
17
18
19 import java.util.ArrayList  ;
20 import java.util.Collection ;
21 import java.util.Enumeration ;
22 import java.util.HashSet ;
23 import java.util.Iterator ;
24 import java.util.List ;
25 import java.util.Map ;
26 import java.util.Set ;
27 import javax.portlet.PortletRequest;
28
29
30
37
38 final class PortletRequestScopeMap implements Map {
39
40
41 public PortletRequestScopeMap(PortletRequest request) {
42 this.request = request;
43 }
44
45
46 private PortletRequest request = null;
47
48
49 public void clear() {
50 Iterator keys = keySet().iterator();
51 while (keys.hasNext()) {
52 request.removeAttribute((String ) keys.next());
53 }
54 }
55
56
57 public boolean containsKey(Object key) {
58 return (request.getAttribute(key(key)) != null);
59 }
60
61
62 public boolean containsValue(Object value) {
63 if (value == null) {
64 return (false);
65 }
66 Enumeration keys = request.getAttributeNames();
67 while (keys.hasMoreElements()) {
68 Object next = request.getAttribute((String ) keys.nextElement());
69 if (next == value) {
70 return (true);
71 }
72 }
73 return (false);
74 }
75
76
77 public Set entrySet() {
78 Set set = new HashSet ();
79 Enumeration keys = request.getAttributeNames();
80 while (keys.hasMoreElements()) {
81 set.add(request.getAttribute((String ) keys.nextElement()));
82 }
83 return (set);
84 }
85
86
87 public boolean equals(Object o) {
88 return (request.equals(o));
89 }
90
91
92 public Object get(Object key) {
93 return (request.getAttribute(key(key)));
94 }
95
96
97 public int hashCode() {
98 return (request.hashCode());
99 }
100
101
102 public boolean isEmpty() {
103 return (size() < 1);
104 }
105
106
107 public Set keySet() {
108 Set set = new HashSet ();
109 Enumeration keys = request.getAttributeNames();
110 while (keys.hasMoreElements()) {
111 set.add(keys.nextElement());
112 }
113 return (set);
114 }
115
116
117 public Object put(Object key, Object value) {
118 if (value == null) {
119 return (remove(key));
120 }
121 String skey = key(key);
122 Object previous = request.getAttribute(skey);
123 request.setAttribute(skey, value);
124 return (previous);
125 }
126
127
128 public void putAll(Map map) {
129 Iterator keys = map.keySet().iterator();
130 while (keys.hasNext()) {
131 String key = (String ) keys.next();
132 request.setAttribute(key, map.get(key));
133 }
134 }
135
136
137 public Object remove(Object key) {
138 String skey = key(key);
139 Object previous = request.getAttribute(skey);
140 request.removeAttribute(skey);
141 return (previous);
142 }
143
144
145 public int size() {
146 int n = 0;
147 Enumeration keys = request.getAttributeNames();
148 while (keys.hasMoreElements()) {
149 keys.nextElement();
150 n++;
151 }
152 return (n);
153 }
154
155
156 public Collection values() {
157 List list = new ArrayList ();
158 Enumeration keys = request.getAttributeNames();
159 while (keys.hasMoreElements()) {
160 list.add(request.getAttribute((String ) keys.nextElement()));
161 }
162 return (list);
163 }
164
165
166 private String key(Object key) {
167 if (key == null) {
168 throw new IllegalArgumentException ();
169 } else if (key instanceof String ) {
170 return ((String ) key);
171 } else {
172 return (key.toString());
173 }
174 }
175
176
177 }
178 |
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