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src/share/jaxws_classes/com/sun/xml/internal/txw2/NamespaceSupport.java@e530533619ec
src/share/jaxws_classes/com/sun/xml/internal/txw2/NamespaceSupport.java
Thu, 12 Oct 2017 19:44:07 +0800
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1 /*
2 * Copyright (c) 2005, 2010, 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 */
26 // NamespaceSupport.java - generic Namespace support for SAX.
27 // http://www.saxproject.org
28 // Written by David Megginson
29 // This class is in the Public Domain. NO WARRANTY!
31 package com.sun.xml.internal.txw2;
33 import java.util.EmptyStackException;
34 import java.util.Enumeration;
35 import java.util.Hashtable;
36 import java.util.Vector;
39 /**
40 * Encapsulate Namespace logic for use by applications using SAX,
41 * or internally by SAX drivers.
42 *
43 * <blockquote>
44 * <em>This module, both source code and documentation, is in the
45 * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
46 * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a>
47 * for further information.
48 * </blockquote>
49 *
50 * <p>This class encapsulates the logic of Namespace processing: it
51 * tracks the declarations currently in force for each context and
52 * automatically processes qualified XML names into their Namespace
53 * parts; it can also be used in reverse for generating XML qnames
54 * from Namespaces.</p>
55 *
56 * <p>Namespace support objects are reusable, but the reset method
57 * must be invoked between each session.</p>
58 *
59 * <p>Here is a simple session:</p>
60 *
61 * <pre>
62 * String parts[] = new String[3];
63 * NamespaceSupport support = new NamespaceSupport();
64 *
65 * support.pushContext();
66 * support.declarePrefix("", "http://www.w3.org/1999/xhtml");
67 * support.declarePrefix("dc", "http://www.purl.org/dc#");
68 *
69 * parts = support.processName("p", parts, false);
70 * System.out.println("Namespace URI: " + parts[0]);
71 * System.out.println("Local name: " + parts[1]);
72 * System.out.println("Raw name: " + parts[2]);
73 *
74 * parts = support.processName("dc:title", parts, false);
75 * System.out.println("Namespace URI: " + parts[0]);
76 * System.out.println("Local name: " + parts[1]);
77 * System.out.println("Raw name: " + parts[2]);
78 *
79 * support.popContext();
80 * </pre>
81 *
82 * <p>Note that this class is optimized for the use case where most
83 * elements do not contain Namespace declarations: if the same
84 * prefix/URI mapping is repeated for each context (for example), this
85 * class will be somewhat less efficient.</p>
86 *
87 * <p>Although SAX drivers (parsers) may choose to use this class to
88 * implement namespace handling, they are not required to do so.
89 * Applications must track namespace information themselves if they
90 * want to use namespace information.
91 *
92 * @since SAX 2.0
93 * @author David Megginson
94 * @version 2.0.1 (sax2r2)
95 */
96 final class NamespaceSupport
97 {
100 ////////////////////////////////////////////////////////////////////
101 // Constants.
102 ////////////////////////////////////////////////////////////////////
105 /**
106 * The XML Namespace URI as a constant.
107 * The value is <code>http://www.w3.org/XML/1998/namespace</code>
108 * as defined in the "Namespaces in XML" * recommendation.
109 *
110 * <p>This is the Namespace URI that is automatically mapped
111 * to the "xml" prefix.</p>
112 */
113 public final static String XMLNS =
114 "http://www.w3.org/XML/1998/namespace";
117 /**
118 * The namespace declaration URI as a constant.
119 * The value is <code>http://www.w3.org/xmlns/2000/</code>, as defined
120 * in a backwards-incompatible erratum to the "Namespaces in XML"
121 * recommendation. Because that erratum postdated SAX2, SAX2 defaults
122 * to the original recommendation, and does not normally use this URI.
123 *
124 *
125 * <p>This is the Namespace URI that is optionally applied to
126 * <em>xmlns</em> and <em>xmlns:*</em> attributes, which are used to
127 * declare namespaces. </p>
128 *
129 * @since SAX 2.1alpha
130 * @see #setNamespaceDeclUris
131 * @see #isNamespaceDeclUris
132 */
133 public final static String NSDECL =
134 "http://www.w3.org/xmlns/2000/";
137 /**
138 * An empty enumeration.
139 */
140 private final static Enumeration EMPTY_ENUMERATION =
141 new Vector().elements();
144 ////////////////////////////////////////////////////////////////////
145 // Constructor.
146 ////////////////////////////////////////////////////////////////////
149 /**
150 * Create a new Namespace support object.
151 */
152 public NamespaceSupport ()
153 {
154 reset();
155 }
159 ////////////////////////////////////////////////////////////////////
160 // Context management.
161 ////////////////////////////////////////////////////////////////////
164 /**
165 * Reset this Namespace support object for reuse.
166 *
167 * <p>It is necessary to invoke this method before reusing the
168 * Namespace support object for a new session. If namespace
169 * declaration URIs are to be supported, that flag must also
170 * be set to a non-default value.
171 * </p>
172 *
173 * @see #setNamespaceDeclUris
174 */
175 public void reset ()
176 {
177 contexts = new Context[32];
178 namespaceDeclUris = false;
179 contextPos = 0;
180 contexts[contextPos] = currentContext = new Context();
181 currentContext.declarePrefix("xml", XMLNS);
182 }
185 /**
186 * Start a new Namespace context.
187 * The new context will automatically inherit
188 * the declarations of its parent context, but it will also keep
189 * track of which declarations were made within this context.
190 *
191 * <p>Event callback code should start a new context once per element.
192 * This means being ready to call this in either of two places.
193 * For elements that don't include namespace declarations, the
194 * <em>ContentHandler.startElement()</em> callback is the right place.
195 * For elements with such a declaration, it'd done in the first
196 * <em>ContentHandler.startPrefixMapping()</em> callback.
197 * A boolean flag can be used to
198 * track whether a context has been started yet. When either of
199 * those methods is called, it checks the flag to see if a new context
200 * needs to be started. If so, it starts the context and sets the
201 * flag. After <em>ContentHandler.startElement()</em>
202 * does that, it always clears the flag.
203 *
204 * <p>Normally, SAX drivers would push a new context at the beginning
205 * of each XML element. Then they perform a first pass over the
206 * attributes to process all namespace declarations, making
207 * <em>ContentHandler.startPrefixMapping()</em> callbacks.
208 * Then a second pass is made, to determine the namespace-qualified
209 * names for all attributes and for the element name.
210 * Finally all the information for the
211 * <em>ContentHandler.startElement()</em> callback is available,
212 * so it can then be made.
213 *
214 * <p>The Namespace support object always starts with a base context
215 * already in force: in this context, only the "xml" prefix is
216 * declared.</p>
217 *
218 * @see org.xml.sax.ContentHandler
219 * @see #popContext
220 */
221 public void pushContext ()
222 {
223 int max = contexts.length;
225 contextPos++;
227 // Extend the array if necessary
228 if (contextPos >= max) {
229 Context newContexts[] = new Context[max*2];
230 System.arraycopy(contexts, 0, newContexts, 0, max);
231 max *= 2;
232 contexts = newContexts;
233 }
235 // Allocate the context if necessary.
236 currentContext = contexts[contextPos];
237 if (currentContext == null) {
238 contexts[contextPos] = currentContext = new Context();
239 }
241 // Set the parent, if any.
242 if (contextPos > 0) {
243 currentContext.setParent(contexts[contextPos - 1]);
244 }
245 }
248 /**
249 * Revert to the previous Namespace context.
250 *
251 * <p>Normally, you should pop the context at the end of each
252 * XML element. After popping the context, all Namespace prefix
253 * mappings that were previously in force are restored.</p>
254 *
255 * <p>You must not attempt to declare additional Namespace
256 * prefixes after popping a context, unless you push another
257 * context first.</p>
258 *
259 * @see #pushContext
260 */
261 public void popContext ()
262 {
263 contexts[contextPos].clear();
264 contextPos--;
265 if (contextPos < 0) {
266 throw new EmptyStackException();
267 }
268 currentContext = contexts[contextPos];
269 }
273 ////////////////////////////////////////////////////////////////////
274 // Operations within a context.
275 ////////////////////////////////////////////////////////////////////
278 /**
279 * Declare a Namespace prefix. All prefixes must be declared
280 * before they are referenced. For example, a SAX driver (parser)
281 * would scan an element's attributes
282 * in two passes: first for namespace declarations,
283 * then a second pass using {@link #processName processName()} to
284 * interpret prefixes against (potentially redefined) prefixes.
285 *
286 * <p>This method declares a prefix in the current Namespace
287 * context; the prefix will remain in force until this context
288 * is popped, unless it is shadowed in a descendant context.</p>
289 *
290 * <p>To declare the default element Namespace, use the empty string as
291 * the prefix.</p>
292 *
293 * <p>Note that there is an asymmetry in this library: {@link
294 * #getPrefix getPrefix} will not return the "" prefix,
295 * even if you have declared a default element namespace.
296 * To check for a default namespace,
297 * you have to look it up explicitly using {@link #getURI getURI}.
298 * This asymmetry exists to make it easier to look up prefixes
299 * for attribute names, where the default prefix is not allowed.</p>
300 *
301 * @param prefix The prefix to declare, or the empty string to
302 * indicate the default element namespace. This may never have
303 * the value "xml" or "xmlns".
304 * @param uri The Namespace URI to associate with the prefix.
305 * @return true if the prefix was legal, false otherwise
306 *
307 * @see #processName
308 * @see #getURI
309 * @see #getPrefix
310 */
311 public boolean declarePrefix (String prefix, String uri)
312 {
313 if (prefix.equals("xml") || prefix.equals("xmlns")) {
314 return false;
315 } else {
316 currentContext.declarePrefix(prefix, uri);
317 return true;
318 }
319 }
322 /**
323 * Process a raw XML qualified name, after all declarations in the
324 * current context have been handled by {@link #declarePrefix
325 * declarePrefix()}.
326 *
327 * <p>This method processes a raw XML qualified name in the
328 * current context by removing the prefix and looking it up among
329 * the prefixes currently declared. The return value will be the
330 * array supplied by the caller, filled in as follows:</p>
331 *
332 * <dl>
333 * <dt>parts[0]</dt>
334 * <dd>The Namespace URI, or an empty string if none is
335 * in use.</dd>
336 * <dt>parts[1]</dt>
337 * <dd>The local name (without prefix).</dd>
338 * <dt>parts[2]</dt>
339 * <dd>The original raw name.</dd>
340 * </dl>
341 *
342 * <p>All of the strings in the array will be internalized. If
343 * the raw name has a prefix that has not been declared, then
344 * the return value will be null.</p>
345 *
346 * <p>Note that attribute names are processed differently than
347 * element names: an unprefixed element name will receive the
348 * default Namespace (if any), while an unprefixed attribute name
349 * will not.</p>
350 *
351 * @param qName The XML qualified name to be processed.
352 * @param parts An array supplied by the caller, capable of
353 * holding at least three members.
354 * @param isAttribute A flag indicating whether this is an
355 * attribute name (true) or an element name (false).
356 * @return The supplied array holding three internalized strings
357 * representing the Namespace URI (or empty string), the
358 * local name, and the XML qualified name; or null if there
359 * is an undeclared prefix.
360 * @see #declarePrefix
361 * @see java.lang.String#intern */
362 public String [] processName (String qName, String parts[],
363 boolean isAttribute)
364 {
365 String myParts[] = currentContext.processName(qName, isAttribute);
366 if (myParts == null) {
367 return null;
368 } else {
369 parts[0] = myParts[0];
370 parts[1] = myParts[1];
371 parts[2] = myParts[2];
372 return parts;
373 }
374 }
377 /**
378 * Look up a prefix and get the currently-mapped Namespace URI.
379 *
380 * <p>This method looks up the prefix in the current context.
381 * Use the empty string ("") for the default Namespace.</p>
382 *
383 * @param prefix The prefix to look up.
384 * @return The associated Namespace URI, or null if the prefix
385 * is undeclared in this context.
386 * @see #getPrefix
387 * @see #getPrefixes
388 */
389 public String getURI (String prefix)
390 {
391 return currentContext.getURI(prefix);
392 }
395 /**
396 * Return an enumeration of all prefixes whose declarations are
397 * active in the current context.
398 * This includes declarations from parent contexts that have
399 * not been overridden.
400 *
401 * <p><strong>Note:</strong> if there is a default prefix, it will not be
402 * returned in this enumeration; check for the default prefix
403 * using the {@link #getURI getURI} with an argument of "".</p>
404 *
405 * @return An enumeration of prefixes (never empty).
406 * @see #getDeclaredPrefixes
407 * @see #getURI
408 */
409 public Enumeration getPrefixes ()
410 {
411 return currentContext.getPrefixes();
412 }
415 /**
416 * Return one of the prefixes mapped to a Namespace URI.
417 *
418 * <p>If more than one prefix is currently mapped to the same
419 * URI, this method will make an arbitrary selection; if you
420 * want all of the prefixes, use the {@link #getPrefixes}
421 * method instead.</p>
422 *
423 * <p><strong>Note:</strong> this will never return the empty (default) prefix;
424 * to check for a default prefix, use the {@link #getURI getURI}
425 * method with an argument of "".</p>
426 *
427 * @param uri the namespace URI
428 * @return one of the prefixes currently mapped to the URI supplied,
429 * or null if none is mapped or if the URI is assigned to
430 * the default namespace
431 * @see #getPrefixes(java.lang.String)
432 * @see #getURI
433 */
434 public String getPrefix (String uri)
435 {
436 return currentContext.getPrefix(uri);
437 }
440 /**
441 * Return an enumeration of all prefixes for a given URI whose
442 * declarations are active in the current context.
443 * This includes declarations from parent contexts that have
444 * not been overridden.
445 *
446 * <p>This method returns prefixes mapped to a specific Namespace
447 * URI. The xml: prefix will be included. If you want only one
448 * prefix that's mapped to the Namespace URI, and you don't care
449 * which one you get, use the {@link #getPrefix getPrefix}
450 * method instead.</p>
451 *
452 * <p><strong>Note:</strong> the empty (default) prefix is <em>never</em> included
453 * in this enumeration; to check for the presence of a default
454 * Namespace, use the {@link #getURI getURI} method with an
455 * argument of "".</p>
456 *
457 * @param uri The Namespace URI.
458 * @return An enumeration of prefixes (never empty).
459 * @see #getPrefix
460 * @see #getDeclaredPrefixes
461 * @see #getURI
462 */
463 public Enumeration getPrefixes (String uri)
464 {
465 Vector prefixes = new Vector();
466 Enumeration allPrefixes = getPrefixes();
467 while (allPrefixes.hasMoreElements()) {
468 String prefix = (String)allPrefixes.nextElement();
469 if (uri.equals(getURI(prefix))) {
470 prefixes.addElement(prefix);
471 }
472 }
473 return prefixes.elements();
474 }
477 /**
478 * Return an enumeration of all prefixes declared in this context.
479 *
480 * <p>The empty (default) prefix will be included in this
481 * enumeration; note that this behaviour differs from that of
482 * {@link #getPrefix} and {@link #getPrefixes}.</p>
483 *
484 * @return An enumeration of all prefixes declared in this
485 * context.
486 * @see #getPrefixes
487 * @see #getURI
488 */
489 public Enumeration getDeclaredPrefixes ()
490 {
491 return currentContext.getDeclaredPrefixes();
492 }
494 /**
495 * Controls whether namespace declaration attributes are placed
496 * into the {@link #NSDECL NSDECL} namespace
497 * by {@link #processName processName()}. This may only be
498 * changed before any contexts have been pushed.
499 *
500 * @since SAX 2.1alpha
501 *
502 * @exception IllegalStateException when attempting to set this
503 * after any context has been pushed.
504 */
505 public void setNamespaceDeclUris (boolean value)
506 {
507 if (contextPos != 0)
508 throw new IllegalStateException ();
509 if (value == namespaceDeclUris)
510 return;
511 namespaceDeclUris = value;
512 if (value)
513 currentContext.declarePrefix ("xmlns", NSDECL);
514 else {
515 contexts[contextPos] = currentContext = new Context();
516 currentContext.declarePrefix("xml", XMLNS);
517 }
518 }
520 /**
521 * Returns true if namespace declaration attributes are placed into
522 * a namespace. This behavior is not the default.
523 *
524 * @since SAX 2.1alpha
525 */
526 public boolean isNamespaceDeclUris ()
527 { return namespaceDeclUris; }
531 ////////////////////////////////////////////////////////////////////
532 // Internal state.
533 ////////////////////////////////////////////////////////////////////
535 private Context contexts[];
536 private Context currentContext;
537 private int contextPos;
538 private boolean namespaceDeclUris;
541 ////////////////////////////////////////////////////////////////////
542 // Internal classes.
543 ////////////////////////////////////////////////////////////////////
545 /**
546 * Internal class for a single Namespace context.
547 *
548 * <p>This module caches and reuses Namespace contexts,
549 * so the number allocated
550 * will be equal to the element depth of the document, not to the total
551 * number of elements (i.e. 5-10 rather than tens of thousands).
552 * Also, data structures used to represent contexts are shared when
553 * possible (child contexts without declarations) to further reduce
554 * the amount of memory that's consumed.
555 * </p>
556 */
557 final class Context {
559 /**
560 * Create the root-level Namespace context.
561 */
562 Context ()
563 {
564 copyTables();
565 }
568 /**
569 * (Re)set the parent of this Namespace context.
570 * The context must either have been freshly constructed,
571 * or must have been cleared.
572 *
573 * @param context The parent Namespace context object.
574 */
575 void setParent (Context parent)
576 {
577 this.parent = parent;
578 declarations = null;
579 prefixTable = parent.prefixTable;
580 uriTable = parent.uriTable;
581 elementNameTable = parent.elementNameTable;
582 attributeNameTable = parent.attributeNameTable;
583 defaultNS = parent.defaultNS;
584 declSeen = false;
585 }
587 /**
588 * Makes associated state become collectible,
589 * invalidating this context.
590 * {@link #setParent} must be called before
591 * this context may be used again.
592 */
593 void clear ()
594 {
595 parent = null;
596 prefixTable = null;
597 uriTable = null;
598 elementNameTable = null;
599 attributeNameTable = null;
600 defaultNS = "";
601 }
604 /**
605 * Declare a Namespace prefix for this context.
606 *
607 * @param prefix The prefix to declare.
608 * @param uri The associated Namespace URI.
609 * @see org.xml.sax.helpers.NamespaceSupport#declarePrefix
610 */
611 void declarePrefix (String prefix, String uri)
612 {
613 // Lazy processing...
614 // if (!declsOK)
615 // throw new IllegalStateException (
616 // "can't declare any more prefixes in this context");
617 if (!declSeen) {
618 copyTables();
619 }
620 if (declarations == null) {
621 declarations = new Vector();
622 }
624 prefix = prefix.intern();
625 uri = uri.intern();
626 if ("".equals(prefix)) {
627 defaultNS = uri;
628 } else {
629 prefixTable.put(prefix, uri);
630 uriTable.put(uri, prefix); // may wipe out another prefix
631 }
632 declarations.addElement(prefix);
633 }
636 /**
637 * Process an XML qualified name in this context.
638 *
639 * @param qName The XML qualified name.
640 * @param isAttribute true if this is an attribute name.
641 * @return An array of three strings containing the
642 * URI part (or empty string), the local part,
643 * and the raw name, all internalized, or null
644 * if there is an undeclared prefix.
645 * @see org.xml.sax.helpers.NamespaceSupport#processName
646 */
647 String [] processName (String qName, boolean isAttribute)
648 {
649 String name[];
650 Hashtable table;
652 // Select the appropriate table.
653 if (isAttribute) {
654 table = attributeNameTable;
655 } else {
656 table = elementNameTable;
657 }
659 // Start by looking in the cache, and
660 // return immediately if the name
661 // is already known in this content
662 name = (String[])table.get(qName);
663 if (name != null) {
664 return name;
665 }
667 // We haven't seen this name in this
668 // context before. Maybe in the parent
669 // context, but we can't assume prefix
670 // bindings are the same.
671 name = new String[3];
672 name[2] = qName.intern();
673 int index = qName.indexOf(':');
676 // No prefix.
677 if (index == -1) {
678 if (isAttribute) {
679 if (qName == "xmlns" && namespaceDeclUris)
680 name[0] = NSDECL;
681 else
682 name[0] = "";
683 } else {
684 name[0] = defaultNS;
685 }
686 name[1] = name[2];
687 }
689 // Prefix
690 else {
691 String prefix = qName.substring(0, index);
692 String local = qName.substring(index+1);
693 String uri;
694 if ("".equals(prefix)) {
695 uri = defaultNS;
696 } else {
697 uri = (String)prefixTable.get(prefix);
698 }
699 if (uri == null
700 || (!isAttribute && "xmlns".equals (prefix))) {
701 return null;
702 }
703 name[0] = uri;
704 name[1] = local.intern();
705 }
707 // Save in the cache for future use.
708 // (Could be shared with parent context...)
709 table.put(name[2], name);
710 return name;
711 }
714 /**
715 * Look up the URI associated with a prefix in this context.
716 *
717 * @param prefix The prefix to look up.
718 * @return The associated Namespace URI, or null if none is
719 * declared.
720 * @see org.xml.sax.helpers.NamespaceSupport#getURI
721 */
722 String getURI (String prefix)
723 {
724 if ("".equals(prefix)) {
725 return defaultNS;
726 } else if (prefixTable == null) {
727 return null;
728 } else {
729 return (String)prefixTable.get(prefix);
730 }
731 }
734 /**
735 * Look up one of the prefixes associated with a URI in this context.
736 *
737 * <p>Since many prefixes may be mapped to the same URI,
738 * the return value may be unreliable.</p>
739 *
740 * @param uri The URI to look up.
741 * @return The associated prefix, or null if none is declared.
742 * @see org.xml.sax.helpers.NamespaceSupport#getPrefix
743 */
744 String getPrefix (String uri) {
745 if (uriTable != null) {
746 String uriPrefix = (String)uriTable.get(uri);
747 if (uriPrefix == null) return null;
748 String verifyNamespace = (String) prefixTable.get(uriPrefix);
749 if (uri.equals(verifyNamespace)) {
750 return uriPrefix;
751 }
752 }
753 return null;
754 }
757 /**
758 * Return an enumeration of prefixes declared in this context.
759 *
760 * @return An enumeration of prefixes (possibly empty).
761 * @see org.xml.sax.helpers.NamespaceSupport#getDeclaredPrefixes
762 */
763 Enumeration getDeclaredPrefixes ()
764 {
765 if (declarations == null) {
766 return EMPTY_ENUMERATION;
767 } else {
768 return declarations.elements();
769 }
770 }
773 /**
774 * Return an enumeration of all prefixes currently in force.
775 *
776 * <p>The default prefix, if in force, is <em>not</em>
777 * returned, and will have to be checked for separately.</p>
778 *
779 * @return An enumeration of prefixes (never empty).
780 * @see org.xml.sax.helpers.NamespaceSupport#getPrefixes
781 */
782 Enumeration getPrefixes ()
783 {
784 if (prefixTable == null) {
785 return EMPTY_ENUMERATION;
786 } else {
787 return prefixTable.keys();
788 }
789 }
793 ////////////////////////////////////////////////////////////////
794 // Internal methods.
795 ////////////////////////////////////////////////////////////////
798 /**
799 * Copy on write for the internal tables in this context.
800 *
801 * <p>This class is optimized for the normal case where most
802 * elements do not contain Namespace declarations.</p>
803 */
804 private void copyTables ()
805 {
806 if (prefixTable != null) {
807 prefixTable = (Hashtable)prefixTable.clone();
808 } else {
809 prefixTable = new Hashtable();
810 }
811 if (uriTable != null) {
812 uriTable = (Hashtable)uriTable.clone();
813 } else {
814 uriTable = new Hashtable();
815 }
816 elementNameTable = new Hashtable();
817 attributeNameTable = new Hashtable();
818 declSeen = true;
819 }
823 ////////////////////////////////////////////////////////////////
824 // Protected state.
825 ////////////////////////////////////////////////////////////////
827 Hashtable prefixTable;
828 Hashtable uriTable;
829 Hashtable elementNameTable;
830 Hashtable attributeNameTable;
831 String defaultNS = "";
835 ////////////////////////////////////////////////////////////////
836 // Internal state.
837 ////////////////////////////////////////////////////////////////
839 private Vector declarations = null;
840 private boolean declSeen = false;
841 private Context parent = null;
842 }
843 }
845 // end of NamespaceSupport.java
