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1: // NamespaceSupport.java - generic Namespace support for SAX. 2: // http://www.saxproject.org 3: // Written by David Megginson 4: // This class is in the Public Domain. NO WARRANTY! 5: // $Id: NamespaceSupport.java,v 1.1 2004/12/23 22:38:42 mark Exp $ 6: 7: package org.xml.sax.helpers; 8: 9: import java.util.EmptyStackException; 10: import java.util.Enumeration; 11: import java.util.Hashtable; 12: import java.util.Vector; 13: 14: 15: /** 16: * Encapsulate Namespace logic for use by applications using SAX, 17: * or internally by SAX drivers. 18: * 19: * <blockquote> 20: * <em>This module, both source code and documentation, is in the 21: * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em> 22: * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a> 23: * for further information. 24: * </blockquote> 25: * 26: * <p>This class encapsulates the logic of Namespace processing: it 27: * tracks the declarations currently in force for each context and 28: * automatically processes qualified XML names into their Namespace 29: * parts; it can also be used in reverse for generating XML qnames 30: * from Namespaces.</p> 31: * 32: * <p>Namespace support objects are reusable, but the reset method 33: * must be invoked between each session.</p> 34: * 35: * <p>Here is a simple session:</p> 36: * 37: * <pre> 38: * String parts[] = new String[3]; 39: * NamespaceSupport support = new NamespaceSupport(); 40: * 41: * support.pushContext(); 42: * support.declarePrefix("", "http://www.w3.org/1999/xhtml"); 43: * support.declarePrefix("dc", "http://www.purl.org/dc#"); 44: * 45: * parts = support.processName("p", parts, false); 46: * System.out.println("Namespace URI: " + parts[0]); 47: * System.out.println("Local name: " + parts[1]); 48: * System.out.println("Raw name: " + parts[2]); 49: * 50: * parts = support.processName("dc:title", parts, false); 51: * System.out.println("Namespace URI: " + parts[0]); 52: * System.out.println("Local name: " + parts[1]); 53: * System.out.println("Raw name: " + parts[2]); 54: * 55: * support.popContext(); 56: * </pre> 57: * 58: * <p>Note that this class is optimized for the use case where most 59: * elements do not contain Namespace declarations: if the same 60: * prefix/URI mapping is repeated for each context (for example), this 61: * class will be somewhat less efficient.</p> 62: * 63: * <p>Although SAX drivers (parsers) may choose to use this class to 64: * implement namespace handling, they are not required to do so. 65: * Applications must track namespace information themselves if they 66: * want to use namespace information. 67: * 68: * @since SAX 2.0 69: * @author David Megginson 70: * @version 2.0.1 (sax2r2) 71: */ 72: public class NamespaceSupport 73: { 74: 75: 76: //////////////////////////////////////////////////////////////////// 77: // Constants. 78: //////////////////////////////////////////////////////////////////// 79: 80: 81: /** 82: * The XML Namespace URI as a constant. 83: * The value is <code>http://www.w3.org/XML/1998/namespace</code> 84: * as defined in the "Namespaces in XML" * recommendation. 85: * 86: * <p>This is the Namespace URI that is automatically mapped 87: * to the "xml" prefix.</p> 88: */ 89: public final static String XMLNS = 90: "http://www.w3.org/XML/1998/namespace"; 91: 92: 93: /** 94: * The namespace declaration URI as a constant. 95: * The value is <code>http://www.w3.org/xmlns/2000/</code>, as defined 96: * in a backwards-incompatible erratum to the "Namespaces in XML" 97: * recommendation. Because that erratum postdated SAX2, SAX2 defaults 98: * to the original recommendation, and does not normally use this URI. 99: * 100: * 101: * <p>This is the Namespace URI that is optionally applied to 102: * <em>xmlns</em> and <em>xmlns:*</em> attributes, which are used to 103: * declare namespaces. </p> 104: * 105: * @since SAX 2.1alpha 106: * @see #setNamespaceDeclUris 107: * @see #isNamespaceDeclUris 108: */ 109: public final static String NSDECL = 110: "http://www.w3.org/xmlns/2000/"; 111: 112: 113: /** 114: * An empty enumeration. 115: */ 116: private final static Enumeration EMPTY_ENUMERATION = 117: new Vector().elements(); 118: 119: 120: //////////////////////////////////////////////////////////////////// 121: // Constructor. 122: //////////////////////////////////////////////////////////////////// 123: 124: 125: /** 126: * Create a new Namespace support object. 127: */ 128: public NamespaceSupport () 129: { 130: reset(); 131: } 132: 133: 134: 135: //////////////////////////////////////////////////////////////////// 136: // Context management. 137: //////////////////////////////////////////////////////////////////// 138: 139: 140: /** 141: * Reset this Namespace support object for reuse. 142: * 143: * <p>It is necessary to invoke this method before reusing the 144: * Namespace support object for a new session. If namespace 145: * declaration URIs are to be supported, that flag must also 146: * be set to a non-default value. 147: * </p> 148: * 149: * @see #setNamespaceDeclUris 150: */ 151: public void reset () 152: { 153: contexts = new Context[32]; 154: namespaceDeclUris = false; 155: contextPos = 0; 156: contexts[contextPos] = currentContext = new Context(); 157: currentContext.declarePrefix("xml", XMLNS); 158: } 159: 160: 161: /** 162: * Start a new Namespace context. 163: * The new context will automatically inherit 164: * the declarations of its parent context, but it will also keep 165: * track of which declarations were made within this context. 166: * 167: * <p>Event callback code should start a new context once per element. 168: * This means being ready to call this in either of two places. 169: * For elements that don't include namespace declarations, the 170: * <em>ContentHandler.startElement()</em> callback is the right place. 171: * For elements with such a declaration, it'd done in the first 172: * <em>ContentHandler.startPrefixMapping()</em> callback. 173: * A boolean flag can be used to 174: * track whether a context has been started yet. When either of 175: * those methods is called, it checks the flag to see if a new context 176: * needs to be started. If so, it starts the context and sets the 177: * flag. After <em>ContentHandler.startElement()</em> 178: * does that, it always clears the flag. 179: * 180: * <p>Normally, SAX drivers would push a new context at the beginning 181: * of each XML element. Then they perform a first pass over the 182: * attributes to process all namespace declarations, making 183: * <em>ContentHandler.startPrefixMapping()</em> callbacks. 184: * Then a second pass is made, to determine the namespace-qualified 185: * names for all attributes and for the element name. 186: * Finally all the information for the 187: * <em>ContentHandler.startElement()</em> callback is available, 188: * so it can then be made. 189: * 190: * <p>The Namespace support object always starts with a base context 191: * already in force: in this context, only the "xml" prefix is 192: * declared.</p> 193: * 194: * @see org.xml.sax.ContentHandler 195: * @see #popContext 196: */ 197: public void pushContext () 198: { 199: int max = contexts.length; 200: 201: contexts [contextPos].declsOK = false; 202: contextPos++; 203: 204: // Extend the array if necessary 205: if (contextPos >= max) { 206: Context newContexts[] = new Context[max*2]; 207: System.arraycopy(contexts, 0, newContexts, 0, max); 208: max *= 2; 209: contexts = newContexts; 210: } 211: 212: // Allocate the context if necessary. 213: currentContext = contexts[contextPos]; 214: if (currentContext == null) { 215: contexts[contextPos] = currentContext = new Context(); 216: } 217: 218: // Set the parent, if any. 219: if (contextPos > 0) { 220: currentContext.setParent(contexts[contextPos - 1]); 221: } 222: } 223: 224: 225: /** 226: * Revert to the previous Namespace context. 227: * 228: * <p>Normally, you should pop the context at the end of each 229: * XML element. After popping the context, all Namespace prefix 230: * mappings that were previously in force are restored.</p> 231: * 232: * <p>You must not attempt to declare additional Namespace 233: * prefixes after popping a context, unless you push another 234: * context first.</p> 235: * 236: * @see #pushContext 237: */ 238: public void popContext () 239: { 240: contexts[contextPos].clear(); 241: contextPos--; 242: if (contextPos < 0) { 243: throw new EmptyStackException(); 244: } 245: currentContext = contexts[contextPos]; 246: } 247: 248: 249: 250: //////////////////////////////////////////////////////////////////// 251: // Operations within a context. 252: //////////////////////////////////////////////////////////////////// 253: 254: 255: /** 256: * Declare a Namespace prefix. All prefixes must be declared 257: * before they are referenced. For example, a SAX driver (parser) 258: * would scan an element's attributes 259: * in two passes: first for namespace declarations, 260: * then a second pass using {@link #processName processName()} to 261: * interpret prefixes against (potentially redefined) prefixes. 262: * 263: * <p>This method declares a prefix in the current Namespace 264: * context; the prefix will remain in force until this context 265: * is popped, unless it is shadowed in a descendant context.</p> 266: * 267: * <p>To declare the default element Namespace, use the empty string as 268: * the prefix.</p> 269: * 270: * <p>Note that you must <em>not</em> declare a prefix after 271: * you've pushed and popped another Namespace context, or 272: * treated the declarations phase as complete by processing 273: * a prefixed name.</p> 274: * 275: * <p>Note that there is an asymmetry in this library: {@link 276: * #getPrefix getPrefix} will not return the "" prefix, 277: * even if you have declared a default element namespace. 278: * To check for a default namespace, 279: * you have to look it up explicitly using {@link #getURI getURI}. 280: * This asymmetry exists to make it easier to look up prefixes 281: * for attribute names, where the default prefix is not allowed.</p> 282: * 283: * @param prefix The prefix to declare, or the empty string to 284: * indicate the default element namespace. This may never have 285: * the value "xml" or "xmlns". 286: * @param uri The Namespace URI to associate with the prefix. 287: * @return true if the prefix was legal, false otherwise 288: * 289: * @see #processName 290: * @see #getURI 291: * @see #getPrefix 292: */ 293: public boolean declarePrefix (String prefix, String uri) 294: { 295: if (prefix.equals("xml") || prefix.equals("xmlns")) { 296: return false; 297: } else { 298: currentContext.declarePrefix(prefix, uri); 299: return true; 300: } 301: } 302: 303: 304: /** 305: * Process a raw XML qualified name, after all declarations in the 306: * current context have been handled by {@link #declarePrefix 307: * declarePrefix()}. 308: * 309: * <p>This method processes a raw XML qualified name in the 310: * current context by removing the prefix and looking it up among 311: * the prefixes currently declared. The return value will be the 312: * array supplied by the caller, filled in as follows:</p> 313: * 314: * <dl> 315: * <dt>parts[0]</dt> 316: * <dd>The Namespace URI, or an empty string if none is 317: * in use.</dd> 318: * <dt>parts[1]</dt> 319: * <dd>The local name (without prefix).</dd> 320: * <dt>parts[2]</dt> 321: * <dd>The original raw name.</dd> 322: * </dl> 323: * 324: * <p>All of the strings in the array will be internalized. If 325: * the raw name has a prefix that has not been declared, then 326: * the return value will be null.</p> 327: * 328: * <p>Note that attribute names are processed differently than 329: * element names: an unprefixed element name will receive the 330: * default Namespace (if any), while an unprefixed attribute name 331: * will not.</p> 332: * 333: * @param qName The XML qualified name to be processed. 334: * @param parts An array supplied by the caller, capable of 335: * holding at least three members. 336: * @param isAttribute A flag indicating whether this is an 337: * attribute name (true) or an element name (false). 338: * @return The supplied array holding three internalized strings 339: * representing the Namespace URI (or empty string), the 340: * local name, and the XML qualified name; or null if there 341: * is an undeclared prefix. 342: * @see #declarePrefix 343: * @see java.lang.String#intern */ 344: public String [] processName (String qName, String parts[], 345: boolean isAttribute) 346: { 347: String myParts[] = currentContext.processName(qName, isAttribute); 348: if (myParts == null) { 349: return null; 350: } else { 351: parts[0] = myParts[0]; 352: parts[1] = myParts[1]; 353: parts[2] = myParts[2]; 354: return parts; 355: } 356: } 357: 358: 359: /** 360: * Look up a prefix and get the currently-mapped Namespace URI. 361: * 362: * <p>This method looks up the prefix in the current context. 363: * Use the empty string ("") for the default Namespace.</p> 364: * 365: * @param prefix The prefix to look up. 366: * @return The associated Namespace URI, or null if the prefix 367: * is undeclared in this context. 368: * @see #getPrefix 369: * @see #getPrefixes 370: */ 371: public String getURI (String prefix) 372: { 373: return currentContext.getURI(prefix); 374: } 375: 376: 377: /** 378: * Return an enumeration of all prefixes whose declarations are 379: * active in the current context. 380: * This includes declarations from parent contexts that have 381: * not been overridden. 382: * 383: * <p><strong>Note:</strong> if there is a default prefix, it will not be 384: * returned in this enumeration; check for the default prefix 385: * using the {@link #getURI getURI} with an argument of "".</p> 386: * 387: * @return An enumeration of prefixes (never empty). 388: * @see #getDeclaredPrefixes 389: * @see #getURI 390: */ 391: public Enumeration getPrefixes () 392: { 393: return currentContext.getPrefixes(); 394: } 395: 396: 397: /** 398: * Return one of the prefixes mapped to a Namespace URI. 399: * 400: * <p>If more than one prefix is currently mapped to the same 401: * URI, this method will make an arbitrary selection; if you 402: * want all of the prefixes, use the {@link #getPrefixes} 403: * method instead.</p> 404: * 405: * <p><strong>Note:</strong> this will never return the empty (default) prefix; 406: * to check for a default prefix, use the {@link #getURI getURI} 407: * method with an argument of "".</p> 408: * 409: * @param uri the namespace URI 410: * @return one of the prefixes currently mapped to the URI supplied, 411: * or null if none is mapped or if the URI is assigned to 412: * the default namespace 413: * @see #getPrefixes(java.lang.String) 414: * @see #getURI 415: */ 416: public String getPrefix (String uri) 417: { 418: return currentContext.getPrefix(uri); 419: } 420: 421: 422: /** 423: * Return an enumeration of all prefixes for a given URI whose 424: * declarations are active in the current context. 425: * This includes declarations from parent contexts that have 426: * not been overridden. 427: * 428: * <p>This method returns prefixes mapped to a specific Namespace 429: * URI. The xml: prefix will be included. If you want only one 430: * prefix that's mapped to the Namespace URI, and you don't care 431: * which one you get, use the {@link #getPrefix getPrefix} 432: * method instead.</p> 433: * 434: * <p><strong>Note:</strong> the empty (default) prefix is <em>never</em> included 435: * in this enumeration; to check for the presence of a default 436: * Namespace, use the {@link #getURI getURI} method with an 437: * argument of "".</p> 438: * 439: * @param uri The Namespace URI. 440: * @return An enumeration of prefixes (never empty). 441: * @see #getPrefix 442: * @see #getDeclaredPrefixes 443: * @see #getURI 444: */ 445: public Enumeration getPrefixes (String uri) 446: { 447: Vector prefixes = new Vector(); 448: Enumeration allPrefixes = getPrefixes(); 449: while (allPrefixes.hasMoreElements()) { 450: String prefix = (String)allPrefixes.nextElement(); 451: if (uri.equals(getURI(prefix))) { 452: prefixes.addElement(prefix); 453: } 454: } 455: return prefixes.elements(); 456: } 457: 458: 459: /** 460: * Return an enumeration of all prefixes declared in this context. 461: * 462: * <p>The empty (default) prefix will be included in this 463: * enumeration; note that this behaviour differs from that of 464: * {@link #getPrefix} and {@link #getPrefixes}.</p> 465: * 466: * @return An enumeration of all prefixes declared in this 467: * context. 468: * @see #getPrefixes 469: * @see #getURI 470: */ 471: public Enumeration getDeclaredPrefixes () 472: { 473: return currentContext.getDeclaredPrefixes(); 474: } 475: 476: /** 477: * Controls whether namespace declaration attributes are placed 478: * into the {@link #NSDECL NSDECL} namespace 479: * by {@link #processName processName()}. This may only be 480: * changed before any contexts have been pushed. 481: * 482: * @since SAX 2.1alpha 483: * 484: * @exception IllegalStateException when attempting to set this 485: * after any context has been pushed. 486: */ 487: public void setNamespaceDeclUris (boolean value) 488: { 489: if (contextPos != 0) 490: throw new IllegalStateException (); 491: if (value == namespaceDeclUris) 492: return; 493: namespaceDeclUris = value; 494: if (value) 495: currentContext.declarePrefix ("xmlns", NSDECL); 496: else { 497: contexts[contextPos] = currentContext = new Context(); 498: currentContext.declarePrefix("xml", XMLNS); 499: } 500: } 501: 502: /** 503: * Returns true if namespace declaration attributes are placed into 504: * a namespace. This behavior is not the default. 505: * 506: * @since SAX 2.1alpha 507: */ 508: public boolean isNamespaceDeclUris () 509: { return namespaceDeclUris; } 510: 511: 512: 513: //////////////////////////////////////////////////////////////////// 514: // Internal state. 515: //////////////////////////////////////////////////////////////////// 516: 517: private Context contexts[]; 518: private Context currentContext; 519: private int contextPos; 520: private boolean namespaceDeclUris; 521: 522: 523: //////////////////////////////////////////////////////////////////// 524: // Internal classes. 525: //////////////////////////////////////////////////////////////////// 526: 527: /** 528: * Internal class for a single Namespace context. 529: * 530: * <p>This module caches and reuses Namespace contexts, 531: * so the number allocated 532: * will be equal to the element depth of the document, not to the total 533: * number of elements (i.e. 5-10 rather than tens of thousands). 534: * Also, data structures used to represent contexts are shared when 535: * possible (child contexts without declarations) to further reduce 536: * the amount of memory that's consumed. 537: * </p> 538: */ 539: final class Context { 540: 541: /** 542: * Create the root-level Namespace context. 543: */ 544: Context () 545: { 546: copyTables(); 547: } 548: 549: 550: /** 551: * (Re)set the parent of this Namespace context. 552: * The context must either have been freshly constructed, 553: * or must have been cleared. 554: * 555: * @param context The parent Namespace context object. 556: */ 557: void setParent (Context parent) 558: { 559: this.parent = parent; 560: declarations = null; 561: prefixTable = parent.prefixTable; 562: uriTable = parent.uriTable; 563: elementNameTable = parent.elementNameTable; 564: attributeNameTable = parent.attributeNameTable; 565: defaultNS = parent.defaultNS; 566: declSeen = false; 567: declsOK = true; 568: } 569: 570: /** 571: * Makes associated state become collectible, 572: * invalidating this context. 573: * {@link #setParent} must be called before 574: * this context may be used again. 575: */ 576: void clear () 577: { 578: parent = null; 579: prefixTable = null; 580: uriTable = null; 581: elementNameTable = null; 582: attributeNameTable = null; 583: defaultNS = null; 584: } 585: 586: 587: /** 588: * Declare a Namespace prefix for this context. 589: * 590: * @param prefix The prefix to declare. 591: * @param uri The associated Namespace URI. 592: * @see org.xml.sax.helpers.NamespaceSupport#declarePrefix 593: */ 594: void declarePrefix (String prefix, String uri) 595: { 596: // Lazy processing... 597: if (!declsOK) 598: throw new IllegalStateException ( 599: "can't declare any more prefixes in this context"); 600: if (!declSeen) { 601: copyTables(); 602: } 603: if (declarations == null) { 604: declarations = new Vector(); 605: } 606: 607: prefix = prefix.intern(); 608: uri = uri.intern(); 609: if ("".equals(prefix)) { 610: if ("".equals(uri)) { 611: defaultNS = null; 612: } else { 613: defaultNS = uri; 614: } 615: } else { 616: prefixTable.put(prefix, uri); 617: uriTable.put(uri, prefix); // may wipe out another prefix 618: } 619: declarations.addElement(prefix); 620: } 621: 622: 623: /** 624: * Process an XML qualified name in this context. 625: * 626: * @param qName The XML qualified name. 627: * @param isAttribute true if this is an attribute name. 628: * @return An array of three strings containing the 629: * URI part (or empty string), the local part, 630: * and the raw name, all internalized, or null 631: * if there is an undeclared prefix. 632: * @see org.xml.sax.helpers.NamespaceSupport#processName 633: */ 634: String [] processName (String qName, boolean isAttribute) 635: { 636: String name[]; 637: Hashtable table; 638: 639: // detect errors in call sequence 640: declsOK = false; 641: 642: // Select the appropriate table. 643: if (isAttribute) { 644: table = attributeNameTable; 645: } else { 646: table = elementNameTable; 647: } 648: 649: // Start by looking in the cache, and 650: // return immediately if the name 651: // is already known in this content 652: name = (String[])table.get(qName); 653: if (name != null) { 654: return name; 655: } 656: 657: // We haven't seen this name in this 658: // context before. Maybe in the parent 659: // context, but we can't assume prefix 660: // bindings are the same. 661: name = new String[3]; 662: name[2] = qName.intern(); 663: int index = qName.indexOf(':'); 664: 665: 666: // No prefix. 667: if (index == -1) { 668: if (isAttribute) { 669: if (qName == "xmlns" && namespaceDeclUris) 670: name[0] = NSDECL; 671: else 672: name[0] = ""; 673: } else if (defaultNS == null) { 674: name[0] = ""; 675: } else { 676: name[0] = defaultNS; 677: } 678: name[1] = name[2]; 679: } 680: 681: // Prefix 682: else { 683: String prefix = qName.substring(0, index); 684: String local = qName.substring(index+1); 685: String uri; 686: if ("".equals(prefix)) { 687: uri = defaultNS; 688: } else { 689: uri = (String)prefixTable.get(prefix); 690: } 691: if (uri == null 692: || (!isAttribute && "xmlns".equals (prefix))) { 693: return null; 694: } 695: name[0] = uri; 696: name[1] = local.intern(); 697: } 698: 699: // Save in the cache for future use. 700: // (Could be shared with parent context...) 701: table.put(name[2], name); 702: return name; 703: } 704: 705: 706: /** 707: * Look up the URI associated with a prefix in this context. 708: * 709: * @param prefix The prefix to look up. 710: * @return The associated Namespace URI, or null if none is 711: * declared. 712: * @see org.xml.sax.helpers.NamespaceSupport#getURI 713: */ 714: String getURI (String prefix) 715: { 716: if ("".equals(prefix)) { 717: return defaultNS; 718: } else if (prefixTable == null) { 719: return null; 720: } else { 721: return (String)prefixTable.get(prefix); 722: } 723: } 724: 725: 726: /** 727: * Look up one of the prefixes associated with a URI in this context. 728: * 729: * <p>Since many prefixes may be mapped to the same URI, 730: * the return value may be unreliable.</p> 731: * 732: * @param uri The URI to look up. 733: * @return The associated prefix, or null if none is declared. 734: * @see org.xml.sax.helpers.NamespaceSupport#getPrefix 735: */ 736: String getPrefix (String uri) 737: { 738: if (uriTable == null) { 739: return null; 740: } else { 741: return (String)uriTable.get(uri); 742: } 743: } 744: 745: 746: /** 747: * Return an enumeration of prefixes declared in this context. 748: * 749: * @return An enumeration of prefixes (possibly empty). 750: * @see org.xml.sax.helpers.NamespaceSupport#getDeclaredPrefixes 751: */ 752: Enumeration getDeclaredPrefixes () 753: { 754: if (declarations == null) { 755: return EMPTY_ENUMERATION; 756: } else { 757: return declarations.elements(); 758: } 759: } 760: 761: 762: /** 763: * Return an enumeration of all prefixes currently in force. 764: * 765: * <p>The default prefix, if in force, is <em>not</em> 766: * returned, and will have to be checked for separately.</p> 767: * 768: * @return An enumeration of prefixes (never empty). 769: * @see org.xml.sax.helpers.NamespaceSupport#getPrefixes 770: */ 771: Enumeration getPrefixes () 772: { 773: if (prefixTable == null) { 774: return EMPTY_ENUMERATION; 775: } else { 776: return prefixTable.keys(); 777: } 778: } 779: 780: 781: 782: //////////////////////////////////////////////////////////////// 783: // Internal methods. 784: //////////////////////////////////////////////////////////////// 785: 786: 787: /** 788: * Copy on write for the internal tables in this context. 789: * 790: * <p>This class is optimized for the normal case where most 791: * elements do not contain Namespace declarations.</p> 792: */ 793: private void copyTables () 794: { 795: if (prefixTable != null) { 796: prefixTable = (Hashtable)prefixTable.clone(); 797: } else { 798: prefixTable = new Hashtable(); 799: } 800: if (uriTable != null) { 801: uriTable = (Hashtable)uriTable.clone(); 802: } else { 803: uriTable = new Hashtable(); 804: } 805: elementNameTable = new Hashtable(); 806: attributeNameTable = new Hashtable(); 807: declSeen = true; 808: } 809: 810: 811: 812: //////////////////////////////////////////////////////////////// 813: // Protected state. 814: //////////////////////////////////////////////////////////////// 815: 816: Hashtable prefixTable; 817: Hashtable uriTable; 818: Hashtable elementNameTable; 819: Hashtable attributeNameTable; 820: String defaultNS = null; 821: boolean declsOK = true; 822: 823: 824: 825: //////////////////////////////////////////////////////////////// 826: // Internal state. 827: //////////////////////////////////////////////////////////////// 828: 829: private Vector declarations = null; 830: private boolean declSeen = false; 831: private Context parent = null; 832: } 833: } 834: 835: // end of NamespaceSupport.java