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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.PortletSession;
28
29
30
37
38 final class PortletSessionScopeMap implements Map {
39
40
41 public PortletSessionScopeMap(PortletSession session) {
42 this.session = session;
43 }
44
45
46 private PortletSession session = null;
47
48
49 public void clear() {
50 Iterator keys = keySet().iterator();
51 while (keys.hasNext()) {
52 session.removeAttribute((String ) keys.next());
53 }
54 }
55
56
57 public boolean containsKey(Object key) {
58 return (session.getAttribute(key(key)) != null);
59 }
60
61
62 public boolean containsValue(Object value) {
63 if (value == null) {
64 return (false);
65 }
66 Enumeration keys =
67 session.getAttributeNames(PortletSession.PORTLET_SCOPE);
68 while (keys.hasMoreElements()) {
69 Object next = session.getAttribute((String ) keys.nextElement());
70 if (next == value) {
71 return (true);
72 }
73 }
74 return (false);
75 }
76
77
78 public Set entrySet() {
79 Set set = new HashSet ();
80 Enumeration keys =
81 session.getAttributeNames(PortletSession.PORTLET_SCOPE);
82 while (keys.hasMoreElements()) {
83 set.add(session.getAttribute((String ) keys.nextElement()));
84 }
85 return (set);
86 }
87
88
89 public boolean equals(Object o) {
90 return (session.equals(o));
91 }
92
93
94 public Object get(Object key) {
95 return (session.getAttribute(key(key)));
96 }
97
98
99 public int hashCode() {
100 return (session.hashCode());
101 }
102
103
104 public boolean isEmpty() {
105 return (size() < 1);
106 }
107
108
109 public Set keySet() {
110 Set set = new HashSet ();
111 Enumeration keys =
112 session.getAttributeNames(PortletSession.PORTLET_SCOPE);
113 while (keys.hasMoreElements()) {
114 set.add(keys.nextElement());
115 }
116 return (set);
117 }
118
119
120 public Object put(Object key, Object value) {
121 if (value == null) {
122 return (remove(key));
123 }
124 String skey = key(key);
125 Object previous = session.getAttribute(skey);
126 session.setAttribute(skey, value);
127 return (previous);
128 }
129
130
131 public void putAll(Map map) {
132 Iterator keys = map.keySet().iterator();
133 while (keys.hasNext()) {
134 String key = (String ) keys.next();
135 session.setAttribute(key, map.get(key));
136 }
137 }
138
139
140 public Object remove(Object key) {
141 String skey = key(key);
142 Object previous = session.getAttribute(skey);
143 session.removeAttribute(skey);
144 return (previous);
145 }
146
147
148 public int size() {
149 int n = 0;
150 Enumeration keys =
151 session.getAttributeNames(PortletSession.PORTLET_SCOPE);
152 while (keys.hasMoreElements()) {
153 keys.nextElement();
154 n++;
155 }
156 return (n);
157 }
158
159
160 public Collection values() {
161 List list = new ArrayList ();
162 Enumeration keys =
163 session.getAttributeNames(PortletSession.PORTLET_SCOPE);
164 while (keys.hasMoreElements()) {
165 list.add(session.getAttribute((String ) keys.nextElement()));
166 }
167 return (list);
168 }
169
170
171 private String key(Object key) {
172 if (key == null) {
173 throw new IllegalArgumentException ();
174 } else if (key instanceof String ) {
175 return ((String ) key);
176 } else {
177 return (key.toString());
178 }
179 }
180
181
182 }
183 |
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