Wed, 27 Apr 2016 01:27:09 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/jaxws/
changeset: 657:d47a47f961ee
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | package com.sun.xml.internal.stream.buffer.stax; |
aoqi@0 | 27 | |
aoqi@0 | 28 | import java.util.ArrayList; |
aoqi@0 | 29 | import java.util.Collections; |
aoqi@0 | 30 | import java.util.Iterator; |
aoqi@0 | 31 | import java.util.List; |
aoqi@0 | 32 | import com.sun.xml.internal.org.jvnet.staxex.NamespaceContextEx; |
aoqi@0 | 33 | |
aoqi@0 | 34 | /** |
aoqi@0 | 35 | * A helper class for managing the declaration of namespaces. |
aoqi@0 | 36 | * <p> |
aoqi@0 | 37 | * A namespace is declared on a namespace context. |
aoqi@0 | 38 | * Namespace contexts are pushed on and popped off the namespace context stack. |
aoqi@0 | 39 | * <p> |
aoqi@0 | 40 | * A declared namespace will be in scope iff the context that it was declared on |
aoqi@0 | 41 | * has not been popped off the stack. |
aoqi@0 | 42 | * <p> |
aoqi@0 | 43 | * When instantiated the namespace stack consists of the root namespace context, |
aoqi@0 | 44 | * which contains, by default, the "xml" and "xmlns" declarations. |
aoqi@0 | 45 | * Namespaces may be declarations may be declared on the root context. |
aoqi@0 | 46 | * The root context cannot be popped but can be reset to contain just the |
aoqi@0 | 47 | * "xml" and "xmlns" declarations. |
aoqi@0 | 48 | * <p> |
aoqi@0 | 49 | * Implementation note: determining the prefix from a namespace URI |
aoqi@0 | 50 | * (or vice versa) is efficient when there are few namespace |
aoqi@0 | 51 | * declarations i.e. what is considered to be the case for namespace |
aoqi@0 | 52 | * declarations in 'average' XML documents. The look up of a namespace URI |
aoqi@0 | 53 | * given a prefix is performed in O(n) time. The look up of a prefix given |
aoqi@0 | 54 | * a namespace URI is performed in O(2n) time. |
aoqi@0 | 55 | * <p> |
aoqi@0 | 56 | * The implementation does not scale when there are many namespace |
aoqi@0 | 57 | * declarations. TODO: Use a hash map when there are many namespace |
aoqi@0 | 58 | * declarations. |
aoqi@0 | 59 | * |
aoqi@0 | 60 | * @author Paul.Sandoz@Sun.Com |
aoqi@0 | 61 | */ |
aoqi@0 | 62 | final public class NamespaceContexHelper implements NamespaceContextEx { |
aoqi@0 | 63 | private static int DEFAULT_SIZE = 8; |
aoqi@0 | 64 | |
aoqi@0 | 65 | // The prefixes of the namespace declarations |
aoqi@0 | 66 | private String[] prefixes = new String[DEFAULT_SIZE]; |
aoqi@0 | 67 | // The URIs of the namespace declarations |
aoqi@0 | 68 | private String[] namespaceURIs = new String[DEFAULT_SIZE]; |
aoqi@0 | 69 | // Current position to store the next namespace declaration |
aoqi@0 | 70 | private int namespacePosition; |
aoqi@0 | 71 | |
aoqi@0 | 72 | // The namespace contexts |
aoqi@0 | 73 | private int[] contexts = new int[DEFAULT_SIZE]; |
aoqi@0 | 74 | // Current position to store the next namespace context |
aoqi@0 | 75 | private int contextPosition; |
aoqi@0 | 76 | |
aoqi@0 | 77 | /** |
aoqi@0 | 78 | * Create a new NamespaceContexHelper. |
aoqi@0 | 79 | * |
aoqi@0 | 80 | */ |
aoqi@0 | 81 | public NamespaceContexHelper() { |
aoqi@0 | 82 | // The default namespace declarations that are always in scope |
aoqi@0 | 83 | prefixes[0] = "xml"; |
aoqi@0 | 84 | namespaceURIs[0] = "http://www.w3.org/XML/1998/namespace"; |
aoqi@0 | 85 | prefixes[1] = "xmlns"; |
aoqi@0 | 86 | namespaceURIs[1] = "http://www.w3.org/2000/xmlns/"; |
aoqi@0 | 87 | |
aoqi@0 | 88 | namespacePosition = 2; |
aoqi@0 | 89 | } |
aoqi@0 | 90 | |
aoqi@0 | 91 | |
aoqi@0 | 92 | // NamespaceContext interface |
aoqi@0 | 93 | |
aoqi@0 | 94 | public String getNamespaceURI(String prefix) { |
aoqi@0 | 95 | if (prefix == null) throw new IllegalArgumentException(); |
aoqi@0 | 96 | |
aoqi@0 | 97 | prefix = prefix.intern(); |
aoqi@0 | 98 | |
aoqi@0 | 99 | for (int i = namespacePosition - 1; i >= 0; i--) { |
aoqi@0 | 100 | final String declaredPrefix = prefixes[i]; |
aoqi@0 | 101 | if (declaredPrefix == prefix) { |
aoqi@0 | 102 | return namespaceURIs[i]; |
aoqi@0 | 103 | } |
aoqi@0 | 104 | } |
aoqi@0 | 105 | |
aoqi@0 | 106 | return ""; |
aoqi@0 | 107 | } |
aoqi@0 | 108 | |
aoqi@0 | 109 | public String getPrefix(String namespaceURI) { |
aoqi@0 | 110 | if (namespaceURI == null) throw new IllegalArgumentException(); |
aoqi@0 | 111 | |
aoqi@0 | 112 | for (int i = namespacePosition - 1; i >= 0; i--) { |
aoqi@0 | 113 | final String declaredNamespaceURI = namespaceURIs[i]; |
aoqi@0 | 114 | if (declaredNamespaceURI == namespaceURI || declaredNamespaceURI.equals(namespaceURI)) { |
aoqi@0 | 115 | final String declaredPrefix = prefixes[i]; |
aoqi@0 | 116 | |
aoqi@0 | 117 | // Check if prefix is out of scope |
aoqi@0 | 118 | for (++i; i < namespacePosition; i++) |
aoqi@0 | 119 | if (declaredPrefix == prefixes[i]) |
aoqi@0 | 120 | return null; |
aoqi@0 | 121 | |
aoqi@0 | 122 | return declaredPrefix; |
aoqi@0 | 123 | } |
aoqi@0 | 124 | } |
aoqi@0 | 125 | |
aoqi@0 | 126 | return null; |
aoqi@0 | 127 | } |
aoqi@0 | 128 | |
aoqi@0 | 129 | public Iterator getPrefixes(String namespaceURI) { |
aoqi@0 | 130 | if (namespaceURI == null) throw new IllegalArgumentException(); |
aoqi@0 | 131 | |
aoqi@0 | 132 | List<String> l = new ArrayList<String>(); |
aoqi@0 | 133 | |
aoqi@0 | 134 | NAMESPACE_LOOP: for (int i = namespacePosition - 1; i >= 0; i--) { |
aoqi@0 | 135 | final String declaredNamespaceURI = namespaceURIs[i]; |
aoqi@0 | 136 | if (declaredNamespaceURI == namespaceURI || declaredNamespaceURI.equals(namespaceURI)) { |
aoqi@0 | 137 | final String declaredPrefix = prefixes[i]; |
aoqi@0 | 138 | |
aoqi@0 | 139 | // Check if prefix is out of scope |
aoqi@0 | 140 | for (int j = i + 1; j < namespacePosition; j++) |
aoqi@0 | 141 | if (declaredPrefix == prefixes[j]) |
aoqi@0 | 142 | continue NAMESPACE_LOOP; |
aoqi@0 | 143 | |
aoqi@0 | 144 | l.add(declaredPrefix); |
aoqi@0 | 145 | } |
aoqi@0 | 146 | } |
aoqi@0 | 147 | |
aoqi@0 | 148 | return l.iterator(); |
aoqi@0 | 149 | } |
aoqi@0 | 150 | |
aoqi@0 | 151 | // NamespaceContextEx interface |
aoqi@0 | 152 | |
aoqi@0 | 153 | public Iterator<NamespaceContextEx.Binding> iterator() { |
aoqi@0 | 154 | if (namespacePosition == 2) |
aoqi@0 | 155 | return Collections.EMPTY_LIST.iterator(); |
aoqi@0 | 156 | |
aoqi@0 | 157 | final List<NamespaceContextEx.Binding> namespaces = |
aoqi@0 | 158 | new ArrayList<NamespaceContextEx.Binding>(namespacePosition); |
aoqi@0 | 159 | |
aoqi@0 | 160 | NAMESPACE_LOOP: for (int i = namespacePosition - 1; i >= 2; i--) { |
aoqi@0 | 161 | final String declaredPrefix = prefixes[i]; |
aoqi@0 | 162 | |
aoqi@0 | 163 | // Check if prefix is out of scope |
aoqi@0 | 164 | for (int j = i + 1; j < namespacePosition; j++) { |
aoqi@0 | 165 | if (declaredPrefix == prefixes[j]) |
aoqi@0 | 166 | continue NAMESPACE_LOOP; |
aoqi@0 | 167 | |
aoqi@0 | 168 | namespaces.add(new NamespaceBindingImpl(i)); |
aoqi@0 | 169 | } |
aoqi@0 | 170 | } |
aoqi@0 | 171 | |
aoqi@0 | 172 | return namespaces.iterator(); |
aoqi@0 | 173 | } |
aoqi@0 | 174 | |
aoqi@0 | 175 | final private class NamespaceBindingImpl implements NamespaceContextEx.Binding { |
aoqi@0 | 176 | int index; |
aoqi@0 | 177 | |
aoqi@0 | 178 | NamespaceBindingImpl(int index) { |
aoqi@0 | 179 | this.index = index; |
aoqi@0 | 180 | } |
aoqi@0 | 181 | |
aoqi@0 | 182 | public String getPrefix() { |
aoqi@0 | 183 | return prefixes[index]; |
aoqi@0 | 184 | } |
aoqi@0 | 185 | |
aoqi@0 | 186 | public String getNamespaceURI() { |
aoqi@0 | 187 | return namespaceURIs[index]; |
aoqi@0 | 188 | } |
aoqi@0 | 189 | } |
aoqi@0 | 190 | |
aoqi@0 | 191 | /** |
aoqi@0 | 192 | * Declare a default namespace. |
aoqi@0 | 193 | * <p> |
aoqi@0 | 194 | * @param namespaceURI the namespace URI to declare, may be null. |
aoqi@0 | 195 | */ |
aoqi@0 | 196 | public void declareDefaultNamespace(String namespaceURI) { |
aoqi@0 | 197 | declareNamespace("", namespaceURI); |
aoqi@0 | 198 | } |
aoqi@0 | 199 | |
aoqi@0 | 200 | /** |
aoqi@0 | 201 | * Declare a namespace. |
aoqi@0 | 202 | * <p> |
aoqi@0 | 203 | * The namespace will be declared on the current namespace context. |
aoqi@0 | 204 | * <p> |
aoqi@0 | 205 | * The namespace can be removed by popping the current namespace |
aoqi@0 | 206 | * context, or, if the declaration occured in the root context, by |
aoqi@0 | 207 | * reseting the namespace context. |
aoqi@0 | 208 | * <p> |
aoqi@0 | 209 | * A default namespace can be declared by passing <code>""</code> as |
aoqi@0 | 210 | * the value of the prefix parameter. |
aoqi@0 | 211 | * A namespace may be undeclared by passing <code>null</code> as the |
aoqi@0 | 212 | * value of the namespaceURI parameter. |
aoqi@0 | 213 | * <p> |
aoqi@0 | 214 | * @param prefix the namespace prefix to declare, may not be null. |
aoqi@0 | 215 | * @param namespaceURI the namespace URI to declare, may be null. |
aoqi@0 | 216 | * @throws IllegalArgumentException, if the prefix is null. |
aoqi@0 | 217 | */ |
aoqi@0 | 218 | public void declareNamespace(String prefix, String namespaceURI) { |
aoqi@0 | 219 | if (prefix == null) throw new IllegalArgumentException(); |
aoqi@0 | 220 | |
aoqi@0 | 221 | prefix = prefix.intern(); |
aoqi@0 | 222 | // Ignore the "xml" or "xmlns" declarations |
aoqi@0 | 223 | if (prefix == "xml" || prefix == "xmlns") |
aoqi@0 | 224 | return; |
aoqi@0 | 225 | |
aoqi@0 | 226 | // Check for undeclaration |
aoqi@0 | 227 | if (namespaceURI != null) |
aoqi@0 | 228 | namespaceURI = namespaceURI.intern(); |
aoqi@0 | 229 | |
aoqi@0 | 230 | if (namespacePosition == namespaceURIs.length) |
aoqi@0 | 231 | resizeNamespaces(); |
aoqi@0 | 232 | |
aoqi@0 | 233 | // Add new declaration |
aoqi@0 | 234 | prefixes[namespacePosition] = prefix; |
aoqi@0 | 235 | namespaceURIs[namespacePosition++] = namespaceURI; |
aoqi@0 | 236 | } |
aoqi@0 | 237 | |
aoqi@0 | 238 | private void resizeNamespaces() { |
aoqi@0 | 239 | final int newLength = namespaceURIs.length * 3 / 2 + 1; |
aoqi@0 | 240 | |
aoqi@0 | 241 | String[] newPrefixes = new String[newLength]; |
aoqi@0 | 242 | System.arraycopy(prefixes, 0, newPrefixes, 0, prefixes.length); |
aoqi@0 | 243 | prefixes = newPrefixes; |
aoqi@0 | 244 | |
aoqi@0 | 245 | String[] newNamespaceURIs = new String[newLength]; |
aoqi@0 | 246 | System.arraycopy(namespaceURIs, 0, newNamespaceURIs, 0, namespaceURIs.length); |
aoqi@0 | 247 | namespaceURIs = newNamespaceURIs; |
aoqi@0 | 248 | } |
aoqi@0 | 249 | |
aoqi@0 | 250 | /** |
aoqi@0 | 251 | * Push a namespace context on the stack. |
aoqi@0 | 252 | */ |
aoqi@0 | 253 | public void pushContext() { |
aoqi@0 | 254 | if (contextPosition == contexts.length) |
aoqi@0 | 255 | resizeContexts(); |
aoqi@0 | 256 | |
aoqi@0 | 257 | contexts[contextPosition++] = namespacePosition; |
aoqi@0 | 258 | } |
aoqi@0 | 259 | |
aoqi@0 | 260 | private void resizeContexts() { |
aoqi@0 | 261 | int[] newContexts = new int[contexts.length * 3 / 2 + 1]; |
aoqi@0 | 262 | System.arraycopy(contexts, 0, newContexts, 0, contexts.length); |
aoqi@0 | 263 | contexts = newContexts; |
aoqi@0 | 264 | } |
aoqi@0 | 265 | |
aoqi@0 | 266 | /** |
aoqi@0 | 267 | * Pop the namespace context off the stack. |
aoqi@0 | 268 | * <p> |
aoqi@0 | 269 | * Namespaces declared within the context (to be popped) |
aoqi@0 | 270 | * will be removed and no longer be in scope. |
aoqi@0 | 271 | */ |
aoqi@0 | 272 | public void popContext() { |
aoqi@0 | 273 | if (contextPosition > 0) { |
aoqi@0 | 274 | namespacePosition = contexts[--contextPosition]; |
aoqi@0 | 275 | } |
aoqi@0 | 276 | } |
aoqi@0 | 277 | |
aoqi@0 | 278 | /** |
aoqi@0 | 279 | * Reset namespace contexts. |
aoqi@0 | 280 | * <p> |
aoqi@0 | 281 | * Pop all namespace contexts and reset the root context. |
aoqi@0 | 282 | */ |
aoqi@0 | 283 | public void resetContexts() { |
aoqi@0 | 284 | namespacePosition = 2; |
aoqi@0 | 285 | } |
aoqi@0 | 286 | } |