1 /* 2 * Copyright (c) 2000, 2019, 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 26 package org.xml.sax.helpers; 27 28 import java.util.ArrayList; 29 import java.util.Collections; 30 import java.util.EmptyStackException; 31 import java.util.Enumeration; 32 import java.util.HashMap; 33 import java.util.List; 34 import java.util.Map; 35 36 37 /** 38 * Encapsulate Namespace logic for use by applications using SAX, 39 * or internally by SAX drivers. 40 * 41 * <p>This class encapsulates the logic of Namespace processing: it 42 * tracks the declarations currently in force for each context and 43 * automatically processes qualified XML names into their Namespace 44 * parts; it can also be used in reverse for generating XML qnames 45 * from Namespaces.</p> 46 * 47 * <p>Namespace support objects are reusable, but the reset method 48 * must be invoked between each session.</p> 49 * 50 * <p>Here is a simple session:</p> 51 * 52 * <pre> 53 * String parts[] = new String[3]; 54 * NamespaceSupport support = new NamespaceSupport(); 55 * 56 * support.pushContext(); 57 * support.declarePrefix("", "http://www.w3.org/1999/xhtml"); 58 * support.declarePrefix("dc", "http://www.purl.org/dc#"); 59 * 60 * parts = support.processName("p", parts, false); 61 * System.out.println("Namespace URI: " + parts[0]); 62 * System.out.println("Local name: " + parts[1]); 63 * System.out.println("Raw name: " + parts[2]); 64 * 65 * parts = support.processName("dc:title", parts, false); 66 * System.out.println("Namespace URI: " + parts[0]); 67 * System.out.println("Local name: " + parts[1]); 68 * System.out.println("Raw name: " + parts[2]); 69 * 70 * support.popContext(); 71 * </pre> 72 * 73 * <p>Note that this class is optimized for the use case where most 74 * elements do not contain Namespace declarations: if the same 75 * prefix/URI mapping is repeated for each context (for example), this 76 * class will be somewhat less efficient.</p> 77 * 78 * <p>Although SAX drivers (parsers) may choose to use this class to 79 * implement namespace handling, they are not required to do so. 80 * Applications must track namespace information themselves if they 81 * want to use namespace information. 82 * 83 * @since 1.4, SAX 2.0 84 * @author David Megginson 85 */ 86 public class NamespaceSupport 87 { 88 89 90 //////////////////////////////////////////////////////////////////// 91 // Constants. 92 //////////////////////////////////////////////////////////////////// 93 94 95 /** 96 * The XML Namespace URI as a constant. 97 * The value is <code>http://www.w3.org/XML/1998/namespace</code> 98 * as defined in the "Namespaces in XML" * recommendation. 99 * 100 * <p>This is the Namespace URI that is automatically mapped 101 * to the "xml" prefix.</p> 102 */ 103 public final static String XMLNS = 104 "http://www.w3.org/XML/1998/namespace"; 105 106 107 /** 108 * The namespace declaration URI as a constant. 109 * The value is <code>http://www.w3.org/xmlns/2000/</code>, as defined 110 * in a backwards-incompatible erratum to the "Namespaces in XML" 111 * recommendation. Because that erratum postdated SAX2, SAX2 defaults 112 * to the original recommendation, and does not normally use this URI. 113 * 114 * 115 * <p>This is the Namespace URI that is optionally applied to 116 * <em>xmlns</em> and <em>xmlns:*</em> attributes, which are used to 117 * declare namespaces. </p> 118 * 119 * @since 1.5, SAX 2.1alpha 120 * @see #setNamespaceDeclUris 121 * @see #isNamespaceDeclUris 122 */ 123 public final static String NSDECL = 124 "http://www.w3.org/xmlns/2000/"; 125 126 127 /** 128 * An empty enumeration. 129 */ 130 private final static Enumeration<String> EMPTY_ENUMERATION = 131 Collections.enumeration(new ArrayList<String>()); 132 133 134 //////////////////////////////////////////////////////////////////// 135 // Constructor. 136 //////////////////////////////////////////////////////////////////// 137 138 139 /** 140 * Create a new Namespace support object. 141 */ 142 public NamespaceSupport () 143 { 144 reset(); 145 } 146 147 148 149 //////////////////////////////////////////////////////////////////// 150 // Context management. 151 //////////////////////////////////////////////////////////////////// 152 153 154 /** 155 * Reset this Namespace support object for reuse. 156 * 157 * <p>It is necessary to invoke this method before reusing the 158 * Namespace support object for a new session. If namespace 159 * declaration URIs are to be supported, that flag must also 160 * be set to a non-default value. 161 * </p> 162 * 163 * @see #setNamespaceDeclUris 164 */ 165 public void reset () 166 { 167 contexts = new Context[32]; 168 namespaceDeclUris = false; 169 contextPos = 0; 170 contexts[contextPos] = currentContext = new Context(); 171 currentContext.declarePrefix("xml", XMLNS); 172 } 173 174 175 /** 176 * Start a new Namespace context. 177 * The new context will automatically inherit 178 * the declarations of its parent context, but it will also keep 179 * track of which declarations were made within this context. 180 * 181 * <p>Event callback code should start a new context once per element. 182 * This means being ready to call this in either of two places. 183 * For elements that don't include namespace declarations, the 184 * <em>ContentHandler.startElement()</em> callback is the right place. 185 * For elements with such a declaration, it'd done in the first 186 * <em>ContentHandler.startPrefixMapping()</em> callback. 187 * A boolean flag can be used to 188 * track whether a context has been started yet. When either of 189 * those methods is called, it checks the flag to see if a new context 190 * needs to be started. If so, it starts the context and sets the 191 * flag. After <em>ContentHandler.startElement()</em> 192 * does that, it always clears the flag. 193 * 194 * <p>Normally, SAX drivers would push a new context at the beginning 195 * of each XML element. Then they perform a first pass over the 196 * attributes to process all namespace declarations, making 197 * <em>ContentHandler.startPrefixMapping()</em> callbacks. 198 * Then a second pass is made, to determine the namespace-qualified 199 * names for all attributes and for the element name. 200 * Finally all the information for the 201 * <em>ContentHandler.startElement()</em> callback is available, 202 * so it can then be made. 203 * 204 * <p>The Namespace support object always starts with a base context 205 * already in force: in this context, only the "xml" prefix is 206 * declared.</p> 207 * 208 * @see org.xml.sax.ContentHandler 209 * @see #popContext 210 */ 211 public void pushContext () 212 { 213 int max = contexts.length; 214 215 contextPos++; 216 217 // Extend the array if necessary 218 if (contextPos >= max) { 219 Context newContexts[] = new Context[max*2]; 220 System.arraycopy(contexts, 0, newContexts, 0, max); 221 max *= 2; 222 contexts = newContexts; 223 } 224 225 // Allocate the context if necessary. 226 currentContext = contexts[contextPos]; 227 if (currentContext == null) { 228 contexts[contextPos] = currentContext = new Context(); 229 } 230 231 // Set the parent, if any. 232 if (contextPos > 0) { 233 currentContext.setParent(contexts[contextPos - 1]); 234 } 235 } 236 237 238 /** 239 * Revert to the previous Namespace context. 240 * 241 * <p>Normally, you should pop the context at the end of each 242 * XML element. After popping the context, all Namespace prefix 243 * mappings that were previously in force are restored.</p> 244 * 245 * <p>You must not attempt to declare additional Namespace 246 * prefixes after popping a context, unless you push another 247 * context first.</p> 248 * 249 * @see #pushContext 250 */ 251 public void popContext () 252 { 253 contexts[contextPos].clear(); 254 contextPos--; 255 if (contextPos < 0) { 256 throw new EmptyStackException(); 257 } 258 currentContext = contexts[contextPos]; 259 } 260 261 262 263 //////////////////////////////////////////////////////////////////// 264 // Operations within a context. 265 //////////////////////////////////////////////////////////////////// 266 267 268 /** 269 * Declare a Namespace prefix. All prefixes must be declared 270 * before they are referenced. For example, a SAX driver (parser) 271 * would scan an element's attributes 272 * in two passes: first for namespace declarations, 273 * then a second pass using {@link #processName processName()} to 274 * interpret prefixes against (potentially redefined) prefixes. 275 * 276 * <p>This method declares a prefix in the current Namespace 277 * context; the prefix will remain in force until this context 278 * is popped, unless it is shadowed in a descendant context.</p> 279 * 280 * <p>To declare the default element Namespace, use the empty string as 281 * the prefix.</p> 282 * 283 * <p>Note that there is an asymmetry in this library: {@link 284 * #getPrefix getPrefix} will not return the "" prefix, 285 * even if you have declared a default element namespace. 286 * To check for a default namespace, 287 * you have to look it up explicitly using {@link #getURI getURI}. 288 * This asymmetry exists to make it easier to look up prefixes 289 * for attribute names, where the default prefix is not allowed.</p> 290 * 291 * @param prefix The prefix to declare, or the empty string to 292 * indicate the default element namespace. This may never have 293 * the value "xml" or "xmlns". 294 * @param uri The Namespace URI to associate with the prefix. 295 * @return true if the prefix was legal, false otherwise 296 * 297 * @see #processName 298 * @see #getURI 299 * @see #getPrefix 300 */ 301 public boolean declarePrefix (String prefix, String uri) 302 { 303 if (prefix.equals("xml") || prefix.equals("xmlns")) { 304 return false; 305 } else { 306 currentContext.declarePrefix(prefix, uri); 307 return true; 308 } 309 } 310 311 312 /** 313 * Process a raw XML qualified name, after all declarations in the 314 * current context have been handled by {@link #declarePrefix 315 * declarePrefix()}. 316 * 317 * <p>This method processes a raw XML qualified name in the 318 * current context by removing the prefix and looking it up among 319 * the prefixes currently declared. The return value will be the 320 * array supplied by the caller, filled in as follows:</p> 321 * 322 * <dl> 323 * <dt>parts[0]</dt> 324 * <dd>The Namespace URI, or an empty string if none is 325 * in use.</dd> 326 * <dt>parts[1]</dt> 327 * <dd>The local name (without prefix).</dd> 328 * <dt>parts[2]</dt> 329 * <dd>The original raw name.</dd> 330 * </dl> 331 * 332 * <p>All of the strings in the array will be internalized. If 333 * the raw name has a prefix that has not been declared, then 334 * the return value will be null.</p> 335 * 336 * <p>Note that attribute names are processed differently than 337 * element names: an unprefixed element name will receive the 338 * default Namespace (if any), while an unprefixed attribute name 339 * will not.</p> 340 * 341 * @param qName The XML qualified name to be processed. 342 * @param parts An array supplied by the caller, capable of 343 * holding at least three members. 344 * @param isAttribute A flag indicating whether this is an 345 * attribute name (true) or an element name (false). 346 * @return The supplied array holding three internalized strings 347 * representing the Namespace URI (or empty string), the 348 * local name, and the XML qualified name; or null if there 349 * is an undeclared prefix. 350 * @see #declarePrefix 351 * @see java.lang.String#intern */ 352 public String [] processName (String qName, String parts[], 353 boolean isAttribute) 354 { 355 String myParts[] = currentContext.processName(qName, isAttribute); 356 if (myParts == null) { 357 return null; 358 } else { 359 parts[0] = myParts[0]; 360 parts[1] = myParts[1]; 361 parts[2] = myParts[2]; 362 return parts; 363 } 364 } 365 366 367 /** 368 * Look up a prefix and get the currently-mapped Namespace URI. 369 * 370 * <p>This method looks up the prefix in the current context. 371 * Use the empty string ("") for the default Namespace.</p> 372 * 373 * @param prefix The prefix to look up. 374 * @return The associated Namespace URI, or null if the prefix 375 * is undeclared in this context. 376 * @see #getPrefix 377 * @see #getPrefixes 378 */ 379 public String getURI (String prefix) 380 { 381 return currentContext.getURI(prefix); 382 } 383 384 385 /** 386 * Return an enumeration of all prefixes whose declarations are 387 * active in the current context. 388 * This includes declarations from parent contexts that have 389 * not been overridden. 390 * 391 * <p><strong>Note:</strong> if there is a default prefix, it will not be 392 * returned in this enumeration; check for the default prefix 393 * using the {@link #getURI getURI} with an argument of "".</p> 394 * 395 * @return An enumeration of prefixes (never empty). 396 * @see #getDeclaredPrefixes 397 * @see #getURI 398 */ 399 public Enumeration<String> getPrefixes () 400 { 401 return currentContext.getPrefixes(); 402 } 403 404 405 /** 406 * Return one of the prefixes mapped to a Namespace URI. 407 * 408 * <p>If more than one prefix is currently mapped to the same 409 * URI, this method will make an arbitrary selection; if you 410 * want all of the prefixes, use the {@link #getPrefixes} 411 * method instead.</p> 412 * 413 * <p><strong>Note:</strong> this will never return the empty (default) prefix; 414 * to check for a default prefix, use the {@link #getURI getURI} 415 * method with an argument of "".</p> 416 * 417 * @param uri the namespace URI 418 * @return one of the prefixes currently mapped to the URI supplied, 419 * or null if none is mapped or if the URI is assigned to 420 * the default namespace 421 * @see #getPrefixes(java.lang.String) 422 * @see #getURI 423 */ 424 public String getPrefix (String uri) 425 { 426 return currentContext.getPrefix(uri); 427 } 428 429 430 /** 431 * Return an enumeration of all prefixes for a given URI whose 432 * declarations are active in the current context. 433 * This includes declarations from parent contexts that have 434 * not been overridden. 435 * 436 * <p>This method returns prefixes mapped to a specific Namespace 437 * URI. The xml: prefix will be included. If you want only one 438 * prefix that's mapped to the Namespace URI, and you don't care 439 * which one you get, use the {@link #getPrefix getPrefix} 440 * method instead.</p> 441 * 442 * <p><strong>Note:</strong> the empty (default) prefix is <em>never</em> included 443 * in this enumeration; to check for the presence of a default 444 * Namespace, use the {@link #getURI getURI} method with an 445 * argument of "".</p> 446 * 447 * @param uri The Namespace URI. 448 * @return An enumeration of prefixes (never empty). 449 * @see #getPrefix 450 * @see #getDeclaredPrefixes 451 * @see #getURI 452 */ 453 public Enumeration<String> getPrefixes (String uri) 454 { 455 List<String> prefixes = new ArrayList<>(); 456 Enumeration<String> allPrefixes = getPrefixes(); 457 while (allPrefixes.hasMoreElements()) { 458 String prefix = allPrefixes.nextElement(); 459 if (uri.equals(getURI(prefix))) { 460 prefixes.add(prefix); 461 } 462 } 463 return Collections.enumeration(prefixes); 464 } 465 466 467 /** 468 * Return an enumeration of all prefixes declared in this context. 469 * 470 * <p>The empty (default) prefix will be included in this 471 * enumeration; note that this behaviour differs from that of 472 * {@link #getPrefix} and {@link #getPrefixes}.</p> 473 * 474 * @return An enumeration of all prefixes declared in this 475 * context. 476 * @see #getPrefixes 477 * @see #getURI 478 */ 479 public Enumeration<String> getDeclaredPrefixes () 480 { 481 return currentContext.getDeclaredPrefixes(); 482 } 483 484 /** 485 * Controls whether namespace declaration attributes are placed 486 * into the {@link #NSDECL NSDECL} namespace 487 * by {@link #processName processName()}. This may only be 488 * changed before any contexts have been pushed. 489 * 490 * @since 1.5, SAX 2.1alpha 491 * 492 * @exception IllegalStateException when attempting to set this 493 * after any context has been pushed. 494 */ 495 public void setNamespaceDeclUris (boolean value) 496 { 497 if (contextPos != 0) 498 throw new IllegalStateException (); 499 if (value == namespaceDeclUris) 500 return; 501 namespaceDeclUris = value; 502 if (value) 503 currentContext.declarePrefix ("xmlns", NSDECL); 504 else { 505 contexts[contextPos] = currentContext = new Context(); 506 currentContext.declarePrefix("xml", XMLNS); 507 } 508 } 509 510 /** 511 * Returns true if namespace declaration attributes are placed into 512 * a namespace. This behavior is not the default. 513 * 514 * @since 1.5, SAX 2.1alpha 515 */ 516 public boolean isNamespaceDeclUris () 517 { return namespaceDeclUris; } 518 519 520 521 //////////////////////////////////////////////////////////////////// 522 // Internal state. 523 //////////////////////////////////////////////////////////////////// 524 525 private Context contexts[]; 526 private Context currentContext; 527 private int contextPos; 528 private boolean namespaceDeclUris; 529 530 531 //////////////////////////////////////////////////////////////////// 532 // Internal classes. 533 //////////////////////////////////////////////////////////////////// 534 535 /** 536 * Internal class for a single Namespace context. 537 * 538 * <p>This module caches and reuses Namespace contexts, 539 * so the number allocated 540 * will be equal to the element depth of the document, not to the total 541 * number of elements (i.e. 5-10 rather than tens of thousands). 542 * Also, data structures used to represent contexts are shared when 543 * possible (child contexts without declarations) to further reduce 544 * the amount of memory that's consumed. 545 * </p> 546 */ 547 final class Context { 548 549 /** 550 * Create the root-level Namespace context. 551 */ 552 Context () 553 { 554 copyTables(); 555 } 556 557 558 /** 559 * (Re)set the parent of this Namespace context. 560 * The context must either have been freshly constructed, 561 * or must have been cleared. 562 * 563 * @param context The parent Namespace context object. 564 */ 565 void setParent (Context parent) 566 { 567 this.parent = parent; 568 declarations = null; 569 prefixTable = parent.prefixTable; 570 uriTable = parent.uriTable; 571 elementNameTable = parent.elementNameTable; 572 attributeNameTable = parent.attributeNameTable; 573 defaultNS = parent.defaultNS; 574 declSeen = false; 575 } 576 577 /** 578 * Makes associated state become collectible, 579 * invalidating this context. 580 * {@link #setParent} must be called before 581 * this context may be used again. 582 */ 583 void clear () 584 { 585 parent = null; 586 prefixTable = null; 587 uriTable = null; 588 elementNameTable = null; 589 attributeNameTable = null; 590 defaultNS = null; 591 } 592 593 594 /** 595 * Declare a Namespace prefix for this context. 596 * 597 * @param prefix The prefix to declare. 598 * @param uri The associated Namespace URI. 599 * @see org.xml.sax.helpers.NamespaceSupport#declarePrefix 600 */ 601 void declarePrefix (String prefix, String uri) 602 { 603 // Lazy processing... 604 // if (!declsOK) 605 // throw new IllegalStateException ( 606 // "can't declare any more prefixes in this context"); 607 if (!declSeen) { 608 copyTables(); 609 } 610 if (declarations == null) { 611 declarations = new ArrayList<>(); 612 } 613 614 prefix = prefix.intern(); 615 uri = uri.intern(); 616 if ("".equals(prefix)) { 617 if ("".equals(uri)) { 618 defaultNS = null; 619 } else { 620 defaultNS = uri; 621 } 622 } else { 623 prefixTable.put(prefix, uri); 624 uriTable.put(uri, prefix); // may wipe out another prefix 625 } 626 declarations.add(prefix); 627 } 628 629 630 /** 631 * Process an XML qualified name in this context. 632 * 633 * @param qName The XML qualified name. 634 * @param isAttribute true if this is an attribute name. 635 * @return An array of three strings containing the 636 * URI part (or empty string), the local part, 637 * and the raw name, all internalized, or null 638 * if there is an undeclared prefix. 639 * @see org.xml.sax.helpers.NamespaceSupport#processName 640 */ 641 String [] processName (String qName, boolean isAttribute) 642 { 643 String name[]; 644 Map<String, String[]> table; 645 646 // Select the appropriate table. 647 if (isAttribute) { 648 table = attributeNameTable; 649 } else { 650 table = elementNameTable; 651 } 652 653 // Start by looking in the cache, and 654 // return immediately if the name 655 // is already known in this content 656 name = table.get(qName); 657 if (name != null) { 658 return name; 659 } 660 661 // We haven't seen this name in this 662 // context before. Maybe in the parent 663 // context, but we can't assume prefix 664 // bindings are the same. 665 name = new String[3]; 666 name[2] = qName.intern(); 667 int index = qName.indexOf(':'); 668 669 670 // No prefix. 671 if (index == -1) { 672 if (isAttribute) { 673 if (qName == "xmlns" && namespaceDeclUris) 674 name[0] = NSDECL; 675 else 676 name[0] = ""; 677 } else if (defaultNS == null) { 678 name[0] = ""; 679 } else { 680 name[0] = defaultNS; 681 } 682 name[1] = name[2]; 683 } 684 685 // Prefix 686 else { 687 String prefix = qName.substring(0, index); 688 String local = qName.substring(index+1); 689 String uri; 690 if ("".equals(prefix)) { 691 uri = defaultNS; 692 } else { 693 uri = prefixTable.get(prefix); 694 } 695 if (uri == null 696 || (!isAttribute && "xmlns".equals (prefix))) { 697 return null; 698 } 699 name[0] = uri; 700 name[1] = local.intern(); 701 } 702 703 // Save in the cache for future use. 704 // (Could be shared with parent context...) 705 table.put(name[2], name); 706 return name; 707 } 708 709 710 /** 711 * Look up the URI associated with a prefix in this context. 712 * 713 * @param prefix The prefix to look up. 714 * @return The associated Namespace URI, or null if none is 715 * declared. 716 * @see org.xml.sax.helpers.NamespaceSupport#getURI 717 */ 718 String getURI (String prefix) 719 { 720 if ("".equals(prefix)) { 721 return defaultNS; 722 } else if (prefixTable == null) { 723 return null; 724 } else { 725 return prefixTable.get(prefix); 726 } 727 } 728 729 730 /** 731 * Look up one of the prefixes associated with a URI in this context. 732 * 733 * <p>Since many prefixes may be mapped to the same URI, 734 * the return value may be unreliable.</p> 735 * 736 * @param uri The URI to look up. 737 * @return The associated prefix, or null if none is declared. 738 * @see org.xml.sax.helpers.NamespaceSupport#getPrefix 739 */ 740 String getPrefix (String uri) 741 { 742 if (uriTable == null) { 743 return null; 744 } else { 745 return uriTable.get(uri); 746 } 747 } 748 749 750 /** 751 * Return an enumeration of prefixes declared in this context. 752 * 753 * @return An enumeration of prefixes (possibly empty). 754 * @see org.xml.sax.helpers.NamespaceSupport#getDeclaredPrefixes 755 */ 756 Enumeration<String> getDeclaredPrefixes () 757 { 758 if (declarations == null) { 759 return EMPTY_ENUMERATION; 760 } else { 761 return Collections.enumeration(declarations); 762 } 763 } 764 765 /** 766 * Return an enumeration of all prefixes currently in force. 767 * 768 * <p>The default prefix, if in force, is <em>not</em> 769 * returned, and will have to be checked for separately.</p> 770 * 771 * @return An enumeration of prefixes (never empty). 772 * @see org.xml.sax.helpers.NamespaceSupport#getPrefixes 773 */ 774 Enumeration<String> getPrefixes () 775 { 776 if (prefixTable == null) { 777 return EMPTY_ENUMERATION; 778 } else { 779 return Collections.enumeration(prefixTable.keySet()); 780 } 781 } 782 783 784 785 //////////////////////////////////////////////////////////////// 786 // Internal methods. 787 //////////////////////////////////////////////////////////////// 788 789 790 /** 791 * Copy on write for the internal tables in this context. 792 * 793 * <p>This class is optimized for the normal case where most 794 * elements do not contain Namespace declarations.</p> 795 */ 796 private void copyTables () 797 { 798 if (prefixTable != null) { 799 prefixTable = new HashMap<>(prefixTable); 800 } else { 801 prefixTable = new HashMap<>(); 802 } 803 if (uriTable != null) { 804 uriTable = new HashMap<>(uriTable); 805 } else { 806 uriTable = new HashMap<>(); 807 } 808 elementNameTable = new HashMap<>(); 809 attributeNameTable = new HashMap<>(); 810 declSeen = true; 811 } 812 813 814 815 //////////////////////////////////////////////////////////////// 816 // Protected state. 817 //////////////////////////////////////////////////////////////// 818 819 Map<String, String> prefixTable; 820 Map<String, String> uriTable; 821 Map<String, String[]> elementNameTable; 822 Map<String, String[]> attributeNameTable; 823 String defaultNS = null; 824 825 826 827 //////////////////////////////////////////////////////////////// 828 // Internal state. 829 //////////////////////////////////////////////////////////////// 830 831 private List<String> declarations = null; 832 private boolean declSeen = false; 833 private Context parent = null; 834 } 835 } 836 837 // end of NamespaceSupport.java