src/share/jaxws_classes/com/sun/xml/internal/fastinfoset/util/NamespaceContextImplementation.java

changeset 286
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1 /*
2 * Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 * THIS FILE WAS MODIFIED BY SUN MICROSYSTEMS, INC.
26 */
27
28 package com.sun.xml.internal.fastinfoset.util;
29
30 import java.util.ArrayList;
31 import java.util.Iterator;
32 import java.util.List;
33 import javax.xml.namespace.NamespaceContext;
34
35 /**
36 *
37 * @author Paul.Sandoz@Sun.Com
38 */
39 final public class NamespaceContextImplementation implements NamespaceContext {
40 private static int DEFAULT_SIZE = 8;
41
42 private String[] prefixes = new String[DEFAULT_SIZE];
43 private String[] namespaceURIs = new String[DEFAULT_SIZE];
44 private int namespacePosition;
45
46 private int[] contexts = new int[DEFAULT_SIZE];
47 private int contextPosition;
48
49 private int currentContext;
50
51 public NamespaceContextImplementation() {
52 prefixes[0] = "xml";
53 namespaceURIs[0] = "http://www.w3.org/XML/1998/namespace";
54 prefixes[1] = "xmlns";
55 namespaceURIs[1] = "http://www.w3.org/2000/xmlns/";
56
57 currentContext = namespacePosition = 2;
58 }
59
60
61 public String getNamespaceURI(String prefix) {
62 if (prefix == null) throw new IllegalArgumentException();
63
64 // prefix = prefix.intern();
65
66 for (int i = namespacePosition - 1; i >= 0; i--) {
67 final String declaredPrefix = prefixes[i];
68 if (declaredPrefix.equals(prefix)) {
69 return namespaceURIs[i];
70 }
71 }
72
73 return "";
74 }
75
76 public String getPrefix(String namespaceURI) {
77 if (namespaceURI == null) throw new IllegalArgumentException();
78
79 // namespaceURI = namespaceURI.intern();
80
81 for (int i = namespacePosition - 1; i >= 0; i--) {
82 final String declaredNamespaceURI = namespaceURIs[i];
83 if (declaredNamespaceURI.equals(namespaceURI)) {
84 final String declaredPrefix = prefixes[i];
85
86 // Check if prefix is out of scope
87 boolean isOutOfScope = false;
88 for (int j = i + 1; j < namespacePosition; j++)
89 if (declaredPrefix.equals(prefixes[j])) {
90 isOutOfScope = true;
91 break;
92 }
93
94 if (!isOutOfScope) {
95 return declaredPrefix;
96 }
97 }
98 }
99
100 return null;
101 }
102
103 public String getNonDefaultPrefix(String namespaceURI) {
104 if (namespaceURI == null) throw new IllegalArgumentException();
105
106 // namespaceURI = namespaceURI.intern();
107
108 for (int i = namespacePosition - 1; i >= 0; i--) {
109 final String declaredNamespaceURI = namespaceURIs[i];
110 if (declaredNamespaceURI.equals(namespaceURI) &&
111 prefixes[i].length() > 0){
112 final String declaredPrefix = prefixes[i];
113
114 // Check if prefix is out of scope
115 for (++i; i < namespacePosition; i++)
116 if (declaredPrefix.equals(prefixes[i]))
117 return null;
118
119 return declaredPrefix;
120 }
121 }
122
123 return null;
124 }
125
126 public Iterator getPrefixes(String namespaceURI) {
127 if (namespaceURI == null) throw new IllegalArgumentException();
128
129 // namespaceURI = namespaceURI.intern();
130
131 List l = new ArrayList();
132
133 NAMESPACE_LOOP: for (int i = namespacePosition - 1; i >= 0; i--) {
134 final String declaredNamespaceURI = namespaceURIs[i];
135 if (declaredNamespaceURI.equals(namespaceURI)) {
136 final String declaredPrefix = prefixes[i];
137
138 // Check if prefix is out of scope
139 for (int j = i + 1; j < namespacePosition; j++)
140 if (declaredPrefix.equals(prefixes[j]))
141 continue NAMESPACE_LOOP;
142
143 l.add(declaredPrefix);
144 }
145 }
146
147 return l.iterator();
148 }
149
150
151 public String getPrefix(int index) {
152 return prefixes[index];
153 }
154
155 public String getNamespaceURI(int index) {
156 return namespaceURIs[index];
157 }
158
159 public int getCurrentContextStartIndex() {
160 return currentContext;
161 }
162
163 public int getCurrentContextEndIndex() {
164 return namespacePosition;
165 }
166
167 public boolean isCurrentContextEmpty() {
168 return currentContext == namespacePosition;
169 }
170
171 public void declarePrefix(String prefix, String namespaceURI) {
172 prefix = prefix.intern();
173 namespaceURI = namespaceURI.intern();
174
175 // Ignore the "xml" or "xmlns" declarations
176 if (prefix == "xml" || prefix == "xmlns")
177 return;
178
179 // Replace any previous declaration
180 for (int i = currentContext; i < namespacePosition; i++) {
181 final String declaredPrefix = prefixes[i];
182 if (declaredPrefix == prefix) {
183 prefixes[i] = prefix;
184 namespaceURIs[i] = namespaceURI;
185 return;
186 }
187 }
188
189 if (namespacePosition == namespaceURIs.length)
190 resizeNamespaces();
191
192 // Add new declaration
193 prefixes[namespacePosition] = prefix;
194 namespaceURIs[namespacePosition++] = namespaceURI;
195 }
196
197 private void resizeNamespaces() {
198 final int newLength = namespaceURIs.length * 3 / 2 + 1;
199
200 String[] newPrefixes = new String[newLength];
201 System.arraycopy(prefixes, 0, newPrefixes, 0, prefixes.length);
202 prefixes = newPrefixes;
203
204 String[] newNamespaceURIs = new String[newLength];
205 System.arraycopy(namespaceURIs, 0, newNamespaceURIs, 0, namespaceURIs.length);
206 namespaceURIs = newNamespaceURIs;
207 }
208
209 public void pushContext() {
210 if (contextPosition == contexts.length)
211 resizeContexts();
212
213 contexts[contextPosition++] = currentContext = namespacePosition;
214 }
215
216 private void resizeContexts() {
217 int[] newContexts = new int[contexts.length * 3 / 2 + 1];
218 System.arraycopy(contexts, 0, newContexts, 0, contexts.length);
219 contexts = newContexts;
220 }
221
222 public void popContext() {
223 if (contextPosition > 0) {
224 namespacePosition = currentContext = contexts[--contextPosition];
225 }
226 }
227
228 public void reset() {
229 currentContext = namespacePosition = 2;
230 }
231 }

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