1 /*
2 * Copyright (c) 2000, 2017, 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
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10 *
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15 * accompanied this code).
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25
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!
30 // $Id: NamespaceSupport.java,v 1.5 2004/11/03 22:53:09 jsuttor Exp $
31
32 package org.xml.sax.helpers;
33
34 import java.util.ArrayList;
35 import java.util.Collections;
36 import java.util.EmptyStackException;
37 import java.util.Enumeration;
38 import java.util.HashMap;
39 import java.util.List;
40 import java.util.Map;
41
42
43 /**
44 * Encapsulate Namespace logic for use by applications using SAX,
45 * or internally by SAX drivers.
46 *
47 * <blockquote>
48 * <em>This module, both source code and documentation, is in the
49 * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
50 * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a>
51 * for further information.
52 * </blockquote>
53 *
54 * <p>This class encapsulates the logic of Namespace processing: it
55 * tracks the declarations currently in force for each context and
56 * automatically processes qualified XML names into their Namespace
57 * parts; it can also be used in reverse for generating XML qnames
58 * from Namespaces.</p>
59 *
60 * <p>Namespace support objects are reusable, but the reset method
61 * must be invoked between each session.</p>
62 *
63 * <p>Here is a simple session:</p>
64 *
65 * <pre>
66 * String parts[] = new String[3];
67 * NamespaceSupport support = new NamespaceSupport();
68 *
69 * support.pushContext();
70 * support.declarePrefix("", "http://www.w3.org/1999/xhtml");
71 * support.declarePrefix("dc", "http://www.purl.org/dc#");
72 *
73 * parts = support.processName("p", parts, false);
74 * System.out.println("Namespace URI: " + parts[0]);
75 * System.out.println("Local name: " + parts[1]);
76 * System.out.println("Raw name: " + parts[2]);
77 *
78 * parts = support.processName("dc:title", parts, false);
79 * System.out.println("Namespace URI: " + parts[0]);
80 * System.out.println("Local name: " + parts[1]);
81 * System.out.println("Raw name: " + parts[2]);
82 *
83 * support.popContext();
84 * </pre>
85 *
86 * <p>Note that this class is optimized for the use case where most
87 * elements do not contain Namespace declarations: if the same
88 * prefix/URI mapping is repeated for each context (for example), this
89 * class will be somewhat less efficient.</p>
90 *
91 * <p>Although SAX drivers (parsers) may choose to use this class to
92 * implement namespace handling, they are not required to do so.
93 * Applications must track namespace information themselves if they
94 * want to use namespace information.
95 *
96 * @since 1.4, SAX 2.0
97 * @author David Megginson
98 */
99 public class NamespaceSupport
100 {
101
102
103 ////////////////////////////////////////////////////////////////////
104 // Constants.
105 ////////////////////////////////////////////////////////////////////
106
107
108 /**
109 * The XML Namespace URI as a constant.
110 * The value is <code>http://www.w3.org/XML/1998/namespace</code>
111 * as defined in the "Namespaces in XML" * recommendation.
112 *
113 * <p>This is the Namespace URI that is automatically mapped
114 * to the "xml" prefix.</p>
115 */
116 public final static String XMLNS =
117 "http://www.w3.org/XML/1998/namespace";
118
119
120 /**
121 * The namespace declaration URI as a constant.
122 * The value is <code>http://www.w3.org/xmlns/2000/</code>, as defined
123 * in a backwards-incompatible erratum to the "Namespaces in XML"
124 * recommendation. Because that erratum postdated SAX2, SAX2 defaults
125 * to the original recommendation, and does not normally use this URI.
126 *
127 *
128 * <p>This is the Namespace URI that is optionally applied to
129 * <em>xmlns</em> and <em>xmlns:*</em> attributes, which are used to
130 * declare namespaces. </p>
131 *
132 * @since 1.5, SAX 2.1alpha
133 * @see #setNamespaceDeclUris
134 * @see #isNamespaceDeclUris
135 */
136 public final static String NSDECL =
137 "http://www.w3.org/xmlns/2000/";
138
139
140 /**
141 * An empty enumeration.
142 */
143 private final static Enumeration<String> EMPTY_ENUMERATION =
144 Collections.enumeration(new ArrayList<String>());
145
146
147 ////////////////////////////////////////////////////////////////////
148 // Constructor.
149 ////////////////////////////////////////////////////////////////////
150
151
152 /**
153 * Create a new Namespace support object.
154 */
155 public NamespaceSupport ()
156 {
157 reset();
158 }
159
160
161
162 ////////////////////////////////////////////////////////////////////
163 // Context management.
164 ////////////////////////////////////////////////////////////////////
165
166
167 /**
168 * Reset this Namespace support object for reuse.
169 *
170 * <p>It is necessary to invoke this method before reusing the
171 * Namespace support object for a new session. If namespace
172 * declaration URIs are to be supported, that flag must also
173 * be set to a non-default value.
174 * </p>
175 *
176 * @see #setNamespaceDeclUris
177 */
178 public void reset ()
179 {
180 contexts = new Context[32];
181 namespaceDeclUris = false;
182 contextPos = 0;
183 contexts[contextPos] = currentContext = new Context();
184 currentContext.declarePrefix("xml", XMLNS);
185 }
186
187
188 /**
189 * Start a new Namespace context.
190 * The new context will automatically inherit
191 * the declarations of its parent context, but it will also keep
192 * track of which declarations were made within this context.
193 *
194 * <p>Event callback code should start a new context once per element.
195 * This means being ready to call this in either of two places.
196 * For elements that don't include namespace declarations, the
197 * <em>ContentHandler.startElement()</em> callback is the right place.
198 * For elements with such a declaration, it'd done in the first
199 * <em>ContentHandler.startPrefixMapping()</em> callback.
200 * A boolean flag can be used to
201 * track whether a context has been started yet. When either of
202 * those methods is called, it checks the flag to see if a new context
203 * needs to be started. If so, it starts the context and sets the
204 * flag. After <em>ContentHandler.startElement()</em>
205 * does that, it always clears the flag.
206 *
207 * <p>Normally, SAX drivers would push a new context at the beginning
208 * of each XML element. Then they perform a first pass over the
209 * attributes to process all namespace declarations, making
210 * <em>ContentHandler.startPrefixMapping()</em> callbacks.
211 * Then a second pass is made, to determine the namespace-qualified
212 * names for all attributes and for the element name.
213 * Finally all the information for the
214 * <em>ContentHandler.startElement()</em> callback is available,
215 * so it can then be made.
216 *
217 * <p>The Namespace support object always starts with a base context
218 * already in force: in this context, only the "xml" prefix is
219 * declared.</p>
220 *
221 * @see org.xml.sax.ContentHandler
222 * @see #popContext
223 */
224 public void pushContext ()
225 {
226 int max = contexts.length;
227
228 contextPos++;
229
230 // Extend the array if necessary
231 if (contextPos >= max) {
232 Context newContexts[] = new Context[max*2];
233 System.arraycopy(contexts, 0, newContexts, 0, max);
234 max *= 2;
235 contexts = newContexts;
236 }
237
238 // Allocate the context if necessary.
239 currentContext = contexts[contextPos];
240 if (currentContext == null) {
241 contexts[contextPos] = currentContext = new Context();
242 }
243
244 // Set the parent, if any.
245 if (contextPos > 0) {
246 currentContext.setParent(contexts[contextPos - 1]);
247 }
248 }
249
250
251 /**
252 * Revert to the previous Namespace context.
253 *
254 * <p>Normally, you should pop the context at the end of each
255 * XML element. After popping the context, all Namespace prefix
256 * mappings that were previously in force are restored.</p>
257 *
258 * <p>You must not attempt to declare additional Namespace
259 * prefixes after popping a context, unless you push another
260 * context first.</p>
261 *
262 * @see #pushContext
263 */
264 public void popContext ()
265 {
266 contexts[contextPos].clear();
267 contextPos--;
268 if (contextPos < 0) {
269 throw new EmptyStackException();
270 }
271 currentContext = contexts[contextPos];
272 }
273
274
275
276 ////////////////////////////////////////////////////////////////////
277 // Operations within a context.
278 ////////////////////////////////////////////////////////////////////
279
280
281 /**
282 * Declare a Namespace prefix. All prefixes must be declared
283 * before they are referenced. For example, a SAX driver (parser)
284 * would scan an element's attributes
285 * in two passes: first for namespace declarations,
286 * then a second pass using {@link #processName processName()} to
287 * interpret prefixes against (potentially redefined) prefixes.
288 *
289 * <p>This method declares a prefix in the current Namespace
290 * context; the prefix will remain in force until this context
291 * is popped, unless it is shadowed in a descendant context.</p>
292 *
293 * <p>To declare the default element Namespace, use the empty string as
294 * the prefix.</p>
295 *
296 * <p>Note that there is an asymmetry in this library: {@link
297 * #getPrefix getPrefix} will not return the "" prefix,
298 * even if you have declared a default element namespace.
299 * To check for a default namespace,
300 * you have to look it up explicitly using {@link #getURI getURI}.
301 * This asymmetry exists to make it easier to look up prefixes
302 * for attribute names, where the default prefix is not allowed.</p>
303 *
304 * @param prefix The prefix to declare, or the empty string to
305 * indicate the default element namespace. This may never have
306 * the value "xml" or "xmlns".
307 * @param uri The Namespace URI to associate with the prefix.
308 * @return true if the prefix was legal, false otherwise
309 *
310 * @see #processName
311 * @see #getURI
312 * @see #getPrefix
313 */
314 public boolean declarePrefix (String prefix, String uri)
315 {
316 if (prefix.equals("xml") || prefix.equals("xmlns")) {
317 return false;
318 } else {
319 currentContext.declarePrefix(prefix, uri);
320 return true;
321 }
322 }
323
324
325 /**
326 * Process a raw XML qualified name, after all declarations in the
327 * current context have been handled by {@link #declarePrefix
328 * declarePrefix()}.
329 *
330 * <p>This method processes a raw XML qualified name in the
331 * current context by removing the prefix and looking it up among
332 * the prefixes currently declared. The return value will be the
333 * array supplied by the caller, filled in as follows:</p>
334 *
335 * <dl>
336 * <dt>parts[0]</dt>
337 * <dd>The Namespace URI, or an empty string if none is
338 * in use.</dd>
339 * <dt>parts[1]</dt>
340 * <dd>The local name (without prefix).</dd>
341 * <dt>parts[2]</dt>
342 * <dd>The original raw name.</dd>
343 * </dl>
344 *
345 * <p>All of the strings in the array will be internalized. If
346 * the raw name has a prefix that has not been declared, then
347 * the return value will be null.</p>
348 *
349 * <p>Note that attribute names are processed differently than
350 * element names: an unprefixed element name will receive the
351 * default Namespace (if any), while an unprefixed attribute name
352 * will not.</p>
353 *
354 * @param qName The XML qualified name to be processed.
355 * @param parts An array supplied by the caller, capable of
356 * holding at least three members.
357 * @param isAttribute A flag indicating whether this is an
358 * attribute name (true) or an element name (false).
359 * @return The supplied array holding three internalized strings
360 * representing the Namespace URI (or empty string), the
361 * local name, and the XML qualified name; or null if there
362 * is an undeclared prefix.
363 * @see #declarePrefix
364 * @see java.lang.String#intern */
365 public String [] processName (String qName, String parts[],
366 boolean isAttribute)
367 {
368 String myParts[] = currentContext.processName(qName, isAttribute);
369 if (myParts == null) {
370 return null;
371 } else {
372 parts[0] = myParts[0];
373 parts[1] = myParts[1];
374 parts[2] = myParts[2];
375 return parts;
376 }
377 }
378
379
380 /**
381 * Look up a prefix and get the currently-mapped Namespace URI.
382 *
383 * <p>This method looks up the prefix in the current context.
384 * Use the empty string ("") for the default Namespace.</p>
385 *
386 * @param prefix The prefix to look up.
387 * @return The associated Namespace URI, or null if the prefix
388 * is undeclared in this context.
389 * @see #getPrefix
390 * @see #getPrefixes
391 */
392 public String getURI (String prefix)
393 {
394 return currentContext.getURI(prefix);
395 }
396
397
398 /**
399 * Return an enumeration of all prefixes whose declarations are
400 * active in the current context.
401 * This includes declarations from parent contexts that have
402 * not been overridden.
403 *
404 * <p><strong>Note:</strong> if there is a default prefix, it will not be
405 * returned in this enumeration; check for the default prefix
406 * using the {@link #getURI getURI} with an argument of "".</p>
407 *
408 * @return An enumeration of prefixes (never empty).
409 * @see #getDeclaredPrefixes
410 * @see #getURI
411 */
412 public Enumeration<String> getPrefixes ()
413 {
414 return currentContext.getPrefixes();
415 }
416
417
418 /**
419 * Return one of the prefixes mapped to a Namespace URI.
420 *
421 * <p>If more than one prefix is currently mapped to the same
422 * URI, this method will make an arbitrary selection; if you
423 * want all of the prefixes, use the {@link #getPrefixes}
424 * method instead.</p>
425 *
426 * <p><strong>Note:</strong> this will never return the empty (default) prefix;
427 * to check for a default prefix, use the {@link #getURI getURI}
428 * method with an argument of "".</p>
429 *
430 * @param uri the namespace URI
431 * @return one of the prefixes currently mapped to the URI supplied,
432 * or null if none is mapped or if the URI is assigned to
433 * the default namespace
434 * @see #getPrefixes(java.lang.String)
435 * @see #getURI
436 */
437 public String getPrefix (String uri)
438 {
439 return currentContext.getPrefix(uri);
440 }
441
442
443 /**
444 * Return an enumeration of all prefixes for a given URI whose
445 * declarations are active in the current context.
446 * This includes declarations from parent contexts that have
447 * not been overridden.
448 *
449 * <p>This method returns prefixes mapped to a specific Namespace
450 * URI. The xml: prefix will be included. If you want only one
451 * prefix that's mapped to the Namespace URI, and you don't care
452 * which one you get, use the {@link #getPrefix getPrefix}
453 * method instead.</p>
454 *
455 * <p><strong>Note:</strong> the empty (default) prefix is <em>never</em> included
456 * in this enumeration; to check for the presence of a default
457 * Namespace, use the {@link #getURI getURI} method with an
458 * argument of "".</p>
459 *
460 * @param uri The Namespace URI.
461 * @return An enumeration of prefixes (never empty).
462 * @see #getPrefix
463 * @see #getDeclaredPrefixes
464 * @see #getURI
465 */
466 public Enumeration<String> getPrefixes (String uri)
467 {
468 List<String> prefixes = new ArrayList<>();
469 Enumeration<String> allPrefixes = getPrefixes();
470 while (allPrefixes.hasMoreElements()) {
471 String prefix = allPrefixes.nextElement();
472 if (uri.equals(getURI(prefix))) {
473 prefixes.add(prefix);
474 }
475 }
476 return Collections.enumeration(prefixes);
477 }
478
479
480 /**
481 * Return an enumeration of all prefixes declared in this context.
482 *
483 * <p>The empty (default) prefix will be included in this
484 * enumeration; note that this behaviour differs from that of
485 * {@link #getPrefix} and {@link #getPrefixes}.</p>
486 *
487 * @return An enumeration of all prefixes declared in this
488 * context.
489 * @see #getPrefixes
490 * @see #getURI
491 */
492 public Enumeration<String> getDeclaredPrefixes ()
493 {
494 return currentContext.getDeclaredPrefixes();
495 }
496
497 /**
498 * Controls whether namespace declaration attributes are placed
499 * into the {@link #NSDECL NSDECL} namespace
500 * by {@link #processName processName()}. This may only be
501 * changed before any contexts have been pushed.
502 *
503 * @since 1.5, SAX 2.1alpha
504 *
505 * @exception IllegalStateException when attempting to set this
506 * after any context has been pushed.
507 */
508 public void setNamespaceDeclUris (boolean value)
509 {
510 if (contextPos != 0)
511 throw new IllegalStateException ();
512 if (value == namespaceDeclUris)
513 return;
514 namespaceDeclUris = value;
515 if (value)
516 currentContext.declarePrefix ("xmlns", NSDECL);
517 else {
518 contexts[contextPos] = currentContext = new Context();
519 currentContext.declarePrefix("xml", XMLNS);
520 }
521 }
522
523 /**
524 * Returns true if namespace declaration attributes are placed into
525 * a namespace. This behavior is not the default.
526 *
527 * @since 1.5, SAX 2.1alpha
528 */
529 public boolean isNamespaceDeclUris ()
530 { return namespaceDeclUris; }
531
532
533
534 ////////////////////////////////////////////////////////////////////
535 // Internal state.
536 ////////////////////////////////////////////////////////////////////
537
538 private Context contexts[];
539 private Context currentContext;
540 private int contextPos;
541 private boolean namespaceDeclUris;
542
543
544 ////////////////////////////////////////////////////////////////////
545 // Internal classes.
546 ////////////////////////////////////////////////////////////////////
547
548 /**
549 * Internal class for a single Namespace context.
550 *
551 * <p>This module caches and reuses Namespace contexts,
552 * so the number allocated
553 * will be equal to the element depth of the document, not to the total
554 * number of elements (i.e. 5-10 rather than tens of thousands).
555 * Also, data structures used to represent contexts are shared when
556 * possible (child contexts without declarations) to further reduce
557 * the amount of memory that's consumed.
558 * </p>
559 */
560 final class Context {
561
562 /**
563 * Create the root-level Namespace context.
564 */
565 Context ()
566 {
567 copyTables();
568 }
569
570
571 /**
572 * (Re)set the parent of this Namespace context.
573 * The context must either have been freshly constructed,
574 * or must have been cleared.
575 *
576 * @param context The parent Namespace context object.
577 */
578 void setParent (Context parent)
579 {
580 this.parent = parent;
581 declarations = null;
582 prefixTable = parent.prefixTable;
583 uriTable = parent.uriTable;
584 elementNameTable = parent.elementNameTable;
585 attributeNameTable = parent.attributeNameTable;
586 defaultNS = parent.defaultNS;
587 declSeen = false;
588 }
589
590 /**
591 * Makes associated state become collectible,
592 * invalidating this context.
593 * {@link #setParent} must be called before
594 * this context may be used again.
595 */
596 void clear ()
597 {
598 parent = null;
599 prefixTable = null;
600 uriTable = null;
601 elementNameTable = null;
602 attributeNameTable = null;
603 defaultNS = null;
604 }
605
606
607 /**
608 * Declare a Namespace prefix for this context.
609 *
610 * @param prefix The prefix to declare.
611 * @param uri The associated Namespace URI.
612 * @see org.xml.sax.helpers.NamespaceSupport#declarePrefix
613 */
614 void declarePrefix (String prefix, String uri)
615 {
616 // Lazy processing...
617 // if (!declsOK)
618 // throw new IllegalStateException (
619 // "can't declare any more prefixes in this context");
620 if (!declSeen) {
621 copyTables();
622 }
623 if (declarations == null) {
624 declarations = new ArrayList<>();
625 }
626
627 prefix = prefix.intern();
628 uri = uri.intern();
629 if ("".equals(prefix)) {
630 if ("".equals(uri)) {
631 defaultNS = null;
632 } else {
633 defaultNS = uri;
634 }
635 } else {
636 prefixTable.put(prefix, uri);
637 uriTable.put(uri, prefix); // may wipe out another prefix
638 }
639 declarations.add(prefix);
640 }
641
642
643 /**
644 * Process an XML qualified name in this context.
645 *
646 * @param qName The XML qualified name.
647 * @param isAttribute true if this is an attribute name.
648 * @return An array of three strings containing the
649 * URI part (or empty string), the local part,
650 * and the raw name, all internalized, or null
651 * if there is an undeclared prefix.
652 * @see org.xml.sax.helpers.NamespaceSupport#processName
653 */
654 String [] processName (String qName, boolean isAttribute)
655 {
656 String name[];
657 Map<String, String[]> table;
658
659 // Select the appropriate table.
660 if (isAttribute) {
661 table = attributeNameTable;
662 } else {
663 table = elementNameTable;
664 }
665
666 // Start by looking in the cache, and
667 // return immediately if the name
668 // is already known in this content
669 name = table.get(qName);
670 if (name != null) {
671 return name;
672 }
673
674 // We haven't seen this name in this
675 // context before. Maybe in the parent
676 // context, but we can't assume prefix
677 // bindings are the same.
678 name = new String[3];
679 name[2] = qName.intern();
680 int index = qName.indexOf(':');
681
682
683 // No prefix.
684 if (index == -1) {
685 if (isAttribute) {
686 if (qName == "xmlns" && namespaceDeclUris)
687 name[0] = NSDECL;
688 else
689 name[0] = "";
690 } else if (defaultNS == null) {
691 name[0] = "";
692 } else {
693 name[0] = defaultNS;
694 }
695 name[1] = name[2];
696 }
697
698 // Prefix
699 else {
700 String prefix = qName.substring(0, index);
701 String local = qName.substring(index+1);
702 String uri;
703 if ("".equals(prefix)) {
704 uri = defaultNS;
705 } else {
706 uri = prefixTable.get(prefix);
707 }
708 if (uri == null
709 || (!isAttribute && "xmlns".equals (prefix))) {
710 return null;
711 }
712 name[0] = uri;
713 name[1] = local.intern();
714 }
715
716 // Save in the cache for future use.
717 // (Could be shared with parent context...)
718 table.put(name[2], name);
719 return name;
720 }
721
722
723 /**
724 * Look up the URI associated with a prefix in this context.
725 *
726 * @param prefix The prefix to look up.
727 * @return The associated Namespace URI, or null if none is
728 * declared.
729 * @see org.xml.sax.helpers.NamespaceSupport#getURI
730 */
731 String getURI (String prefix)
732 {
733 if ("".equals(prefix)) {
734 return defaultNS;
735 } else if (prefixTable == null) {
736 return null;
737 } else {
738 return prefixTable.get(prefix);
739 }
740 }
741
742
743 /**
744 * Look up one of the prefixes associated with a URI in this context.
745 *
746 * <p>Since many prefixes may be mapped to the same URI,
747 * the return value may be unreliable.</p>
748 *
749 * @param uri The URI to look up.
750 * @return The associated prefix, or null if none is declared.
751 * @see org.xml.sax.helpers.NamespaceSupport#getPrefix
752 */
753 String getPrefix (String uri)
754 {
755 if (uriTable == null) {
756 return null;
757 } else {
758 return uriTable.get(uri);
759 }
760 }
761
762
763 /**
764 * Return an enumeration of prefixes declared in this context.
765 *
766 * @return An enumeration of prefixes (possibly empty).
767 * @see org.xml.sax.helpers.NamespaceSupport#getDeclaredPrefixes
768 */
769 Enumeration<String> getDeclaredPrefixes ()
770 {
771 if (declarations == null) {
772 return EMPTY_ENUMERATION;
773 } else {
774 return Collections.enumeration(declarations);
775 }
776 }
777
778 /**
779 * Return an enumeration of all prefixes currently in force.
780 *
781 * <p>The default prefix, if in force, is <em>not</em>
782 * returned, and will have to be checked for separately.</p>
783 *
784 * @return An enumeration of prefixes (never empty).
785 * @see org.xml.sax.helpers.NamespaceSupport#getPrefixes
786 */
787 Enumeration<String> getPrefixes ()
788 {
789 if (prefixTable == null) {
790 return EMPTY_ENUMERATION;
791 } else {
792 return Collections.enumeration(prefixTable.keySet());
793 }
794 }
795
796
797
798 ////////////////////////////////////////////////////////////////
799 // Internal methods.
800 ////////////////////////////////////////////////////////////////
801
802
803 /**
804 * Copy on write for the internal tables in this context.
805 *
806 * <p>This class is optimized for the normal case where most
807 * elements do not contain Namespace declarations.</p>
808 */
809 private void copyTables ()
810 {
811 if (prefixTable != null) {
812 prefixTable = new HashMap<>(prefixTable);
813 } else {
814 prefixTable = new HashMap<>();
815 }
816 if (uriTable != null) {
817 uriTable = new HashMap<>(uriTable);
818 } else {
819 uriTable = new HashMap<>();
820 }
821 elementNameTable = new HashMap<>();
822 attributeNameTable = new HashMap<>();
823 declSeen = true;
824 }
825
826
827
828 ////////////////////////////////////////////////////////////////
829 // Protected state.
830 ////////////////////////////////////////////////////////////////
831
832 Map<String, String> prefixTable;
833 Map<String, String> uriTable;
834 Map<String, String[]> elementNameTable;
835 Map<String, String[]> attributeNameTable;
836 String defaultNS = null;
837
838
839
840 ////////////////////////////////////////////////////////////////
841 // Internal state.
842 ////////////////////////////////////////////////////////////////
843
844 private List<String> declarations = null;
845 private boolean declSeen = false;
846 private Context parent = null;
847 }
848 }
849
850 // end of NamespaceSupport.java