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16 package org.apache.commons.chain.web.servlet;
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.servlet.http.HttpServletRequest ;
28 import org.apache.commons.chain.web.MapEntry;
29
30
31
38
39 final class ServletHeaderValuesMap implements Map {
40
41
42 public ServletHeaderValuesMap(HttpServletRequest request) {
43 this.request = request;
44 }
45
46
47 private HttpServletRequest request = null;
48
49
50 public void clear() {
51 throw new UnsupportedOperationException ();
52 }
53
54
55 public boolean containsKey(Object key) {
56 return (request.getHeader(key(key)) != null);
57 }
58
59
60 public boolean containsValue(Object value) {
61 if (!(value instanceof String [])) {
62 return (false);
63 }
64 String [] test = (String []) value;
65 Iterator values = values().iterator();
66 while (values.hasNext()) {
67 String [] actual = (String []) values.next();
68 if (test.length == actual.length) {
69 boolean matched = true;
70 for (int i = 0; i < test.length; i++) {
71 if (!test[i].equals(actual[i])) {
72 matched = false;
73 break;
74 }
75 }
76 if (matched) {
77 return (true);
78 }
79 }
80 }
81 return (false);
82 }
83
84
85 public Set entrySet() {
86 Set set = new HashSet ();
87 Enumeration keys = request.getHeaderNames();
88 String key;
89 while (keys.hasMoreElements()) {
90 key = (String ) keys.nextElement();
91 set.add(new MapEntry(key, request.getHeaders(key), false));
92 }
93 return (set);
94 }
95
96
97 public boolean equals(Object o) {
98 return (request.equals(o));
99 }
100
101
102 public Object get(Object key) {
103 List list = new ArrayList ();
104 Enumeration values = request.getHeaders(key(key));
105 while (values.hasMoreElements()) {
106 list.add((String ) values.nextElement());
107 }
108 return (((String []) list.toArray(new String [list.size()])));
109 }
110
111
112 public int hashCode() {
113 return (request.hashCode());
114 }
115
116
117 public boolean isEmpty() {
118 return (size() < 1);
119 }
120
121
122 public Set keySet() {
123 Set set = new HashSet ();
124 Enumeration keys = request.getHeaderNames();
125 while (keys.hasMoreElements()) {
126 set.add(keys.nextElement());
127 }
128 return (set);
129 }
130
131
132 public Object put(Object key, Object value) {
133 throw new UnsupportedOperationException ();
134 }
135
136
137 public void putAll(Map map) {
138 throw new UnsupportedOperationException ();
139 }
140
141
142 public Object remove(Object key) {
143 throw new UnsupportedOperationException ();
144 }
145
146
147 public int size() {
148 int n = 0;
149 Enumeration keys = request.getHeaderNames();
150 while (keys.hasMoreElements()) {
151 keys.nextElement();
152 n++;
153 }
154 return (n);
155 }
156
157
158 public Collection values() {
159 List list = new ArrayList ();
160 Enumeration keys = request.getHeaderNames();
161 while (keys.hasMoreElements()) {
162 String key = (String ) keys.nextElement();
163 List list1 = new ArrayList ();
164 Enumeration values = request.getHeaders(key);
165 while (values.hasMoreElements()) {
166 list1.add((String ) values.nextElement());
167 }
168 list.add(((String []) list1.toArray(new String [list1.size()])));
169 }
170 return (list);
171 }
172
173
174 private String key(Object key) {
175 if (key == null) {
176 throw new IllegalArgumentException ();
177 } else if (key instanceof String ) {
178 return ((String ) key);
179 } else {
180 return (key.toString());
181 }
182 }
183
184
185 }
186 |
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