1 /*
   2  * Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
   3  */
   4 /*
   5  * Licensed to the Apache Software Foundation (ASF) under one or more
   6  * contributor license agreements.  See the NOTICE file distributed with
   7  * this work for additional information regarding copyright ownership.
   8  * The ASF licenses this file to You under the Apache License, Version 2.0
   9  * (the "License"); you may not use this file except in compliance with
  10  * the License.  You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  */
  20 
  21 package com.sun.org.apache.xerces.internal.impl;
  22 
  23 import com.sun.org.apache.xerces.internal.utils.SecuritySupport;
  24 import java.util.Enumeration;
  25 import java.util.NoSuchElementException;
  26 
  27 /**
  28  * Commonly used constants.
  29  *
  30  * @xerces.internal
  31  *
  32  * @author Andy Clark, IBM
  33  *
  34  */
  35 public final class Constants {
  36 
  37     //
  38     // Constants
  39     //
  40     // Schema Types:
  41     public static final String NS_XMLSCHEMA = "http://www.w3.org/2001/XMLSchema".intern();
  42     public static final String NS_DTD = "http://www.w3.org/TR/REC-xml".intern();
  43 
  44     // Schema Versions:
  45     public static final String W3C_XML_SCHEMA10_NS_URI = "http://www.w3.org/XML/XMLSchema/v1.0".intern();
  46 
  47     // Schema features
  48     public static final String SUN_SCHEMA_FEATURE_PREFIX = "http://java.sun.com/xml/schema/features/";
  49     public static final String SUN_REPORT_IGNORED_ELEMENT_CONTENT_WHITESPACE = "report-ignored-element-content-whitespace";
  50 
  51     //stax properties
  52 
  53     public static final String ZEPHYR_PROPERTY_PREFIX = "http://java.sun.com/xml/stream/properties/" ;
  54     public static final String STAX_PROPERTIES = "stax-properties" ;
  55     public static final String STAX_ENTITY_RESOLVER_PROPERTY = "internal/stax-entity-resolver";
  56     public static final String STAX_REPORT_CDATA_EVENT = "report-cdata-event";
  57     public static final String READER_IN_DEFINED_STATE = ZEPHYR_PROPERTY_PREFIX + "reader-in-defined-state" ;
  58     public static final String ADD_NAMESPACE_DECL_AS_ATTRIBUTE = "add-namespacedecl-as-attrbiute";
  59     public static final String ESCAPE_CHARACTERS = "escapeCharacters";
  60     public static final String REUSE_INSTANCE = "reuse-instance" ;
  61 
  62     //DOM properties
  63     public static final String SUN_DOM_PROPERTY_PREFIX = "http://java.sun.com/xml/dom/properties/" ;
  64     public static final String SUN_DOM_ANCESTOR_CHECCK = "ancestor-check";
  65 
  66     /**
  67      * If true, ignore DOCTYPE declaration as if it wasn't present at all.
  68      * Note that this is a violation of the XML recommendation.
  69      * The full property name is prefixed by {@link #ZEPHYR_PROPERTY_PREFIX}.
  70      */
  71     public static final String IGNORE_EXTERNAL_DTD = "ignore-external-dtd";
  72 
  73     // sax features
  74 
  75     /** SAX feature prefix ("http://xml.org/sax/features/"). */
  76     public static final String SAX_FEATURE_PREFIX = "http://xml.org/sax/features/";
  77 
  78     public static final String NAMESPACES_FEATURE = "namespaces";
  79 
  80     /** Namespace prefixes feature ("namespace-prefixes"). */
  81     public static final String NAMESPACE_PREFIXES_FEATURE = "namespace-prefixes";
  82 
  83     /** String interning feature ("string-interning"). */
  84     public static final String STRING_INTERNING_FEATURE = "string-interning";
  85 
  86     /** Validation feature ("validation"). */
  87     public static final String VALIDATION_FEATURE = "validation";
  88 
  89     /** External general entities feature ("external-general-entities "). */
  90     public static final String EXTERNAL_GENERAL_ENTITIES_FEATURE = "external-general-entities";
  91 
  92     /** External parameter entities feature ("external-parameter-entities "). */
  93     public static final String EXTERNAL_PARAMETER_ENTITIES_FEATURE = "external-parameter-entities";
  94 
  95     /** Lexical handler parameter entities feature ("lexical-handler/parameter-entities"). */
  96     public static final String LEXICAL_HANDLER_PARAMETER_ENTITIES_FEATURE = "lexical-handler/parameter-entities";
  97 
  98     /** Is standalone feature ("is-standalone"). */
  99     public static final String IS_STANDALONE_FEATURE = "is-standalone";
 100 
 101     /** Resolve DTD URIs feature ("resolve-dtd-uris"). */
 102     public static final String RESOLVE_DTD_URIS_FEATURE = "resolve-dtd-uris";
 103 
 104     /** Use Attributes2 feature ("use-attributes2"). */
 105     public static final String USE_ATTRIBUTES2_FEATURE = "use-attributes2";
 106 
 107     /** Use Locator2 feature ("use-locator2"). */
 108     public static final String USE_LOCATOR2_FEATURE = "use-locator2";
 109 
 110     /** Use EntityResolver2 feature ("use-entity-resolver2"). */
 111     public static final String USE_ENTITY_RESOLVER2_FEATURE = "use-entity-resolver2";
 112 
 113     /** Unicode normalization checking feature ("unicode-normalization-checking"). */
 114     public static final String UNICODE_NORMALIZATION_CHECKING_FEATURE = "unicode-normalization-checking";
 115 
 116     /** xmlns URIs feature ("xmlns-uris"). */
 117     public static final String XMLNS_URIS_FEATURE = "xmlns-uris";
 118 
 119     /** XML 1.1 feature ("xml-1.1"). */
 120     public static final String XML_11_FEATURE = "xml-1.1";
 121 
 122     /** Allow unparsed entity and notation declaration events to be sent after the end DTD event ("allow-dtd-events-after-endDTD") */
 123     public static final String ALLOW_DTD_EVENTS_AFTER_ENDDTD_FEATURE = "allow-dtd-events-after-endDTD";
 124 
 125     // sax properties
 126 
 127     /** SAX property prefix ("http://xml.org/sax/properties/"). */
 128     public static final String SAX_PROPERTY_PREFIX = "http://xml.org/sax/properties/";
 129 
 130     /** Declaration handler property ("declaration-handler"). */
 131     public static final String DECLARATION_HANDLER_PROPERTY = "declaration-handler";
 132 
 133     /** Lexical handler property ("lexical-handler"). */
 134     public static final String LEXICAL_HANDLER_PROPERTY = "lexical-handler";
 135 
 136     /** DOM node property ("dom-node"). */
 137     public static final String DOM_NODE_PROPERTY = "dom-node";
 138 
 139     /** XML string property ("xml-string"). */
 140     public static final String XML_STRING_PROPERTY = "xml-string";
 141 
 142     public static final String FEATURE_SECURE_PROCESSING = "http://javax.xml.XMLConstants/feature/secure-processing";
 143 
 144     // Oracle Feature:
 145     /**
 146      * <p>Use Service Mechanism</p>
 147      *
 148      * <ul>
 149      *   <li>
 150      * {@code true} instruct an object to use service mechanism to
 151      * find a service implementation. This is the default behavior.
 152      *   </li>
 153      *   <li>
 154      * {@code false} instruct an object to skip service mechanism and
 155      * use the default implementation for that service.
 156      *   </li>
 157      * </ul>
 158      */
 159     public static final String ORACLE_FEATURE_SERVICE_MECHANISM = "http://www.oracle.com/feature/use-service-mechanism";
 160 
 161     /** Document XML version property ("document-xml-version"). */
 162     public static final String DOCUMENT_XML_VERSION_PROPERTY = "document-xml-version";
 163 
 164 
 165     //
 166     // JAXP properties
 167     //
 168 
 169     /** JAXP property prefix ("http://java.sun.com/xml/jaxp/properties/"). */
 170     public static final String JAXP_PROPERTY_PREFIX =
 171         "http://java.sun.com/xml/jaxp/properties/";
 172 
 173     /** JAXP schemaSource property: when used internally may include DTD sources (DOM) */
 174     public static final String SCHEMA_SOURCE = "schemaSource";
 175 
 176     /** JAXP schemaSource language: when used internally may include DTD namespace (DOM) */
 177     public static final String SCHEMA_LANGUAGE = "schemaLanguage";
 178 
 179     /** JAXP Standard property prefix ("http://javax.xml.XMLConstants/property/"). */
 180     public static final String JAXPAPI_PROPERTY_PREFIX =
 181         "http://javax.xml.XMLConstants/property/";
 182 
 183     /** Oracle JAXP property prefix ("http://www.oracle.com/xml/jaxp/properties/"). */
 184     public static final String ORACLE_JAXP_PROPERTY_PREFIX =
 185         "http://www.oracle.com/xml/jaxp/properties/";
 186 
 187     public static final String XML_SECURITY_PROPERTY_MANAGER =
 188             ORACLE_JAXP_PROPERTY_PREFIX + "xmlSecurityPropertyManager";
 189 
 190     //System Properties corresponding to ACCESS_EXTERNAL_* properties
 191     public static final String SP_ACCESS_EXTERNAL_DTD = "javax.xml.accessExternalDTD";
 192     public static final String SP_ACCESS_EXTERNAL_SCHEMA = "javax.xml.accessExternalSchema";
 193     //all access keyword
 194     public static final String ACCESS_EXTERNAL_ALL = "all";
 195 
 196     /**
 197      * Default value when FEATURE_SECURE_PROCESSING (FSP) is set to true
 198      */
 199     public static final String EXTERNAL_ACCESS_DEFAULT_FSP = "";
 200 
 201     /**
 202      * FEATURE_SECURE_PROCESSING (FSP) is true by default
 203      */
 204     public static final String EXTERNAL_ACCESS_DEFAULT = ACCESS_EXTERNAL_ALL;
 205 
 206     //
 207     // Implementation limits: corresponding System Properties of the above
 208     // API properties
 209     //
 210     /**
 211      * JDK entity expansion limit; Note that the existing system property
 212      * "entityExpansionLimit" with no prefix is still observed
 213      */
 214     public static final String JDK_ENTITY_EXPANSION_LIMIT =
 215             ORACLE_JAXP_PROPERTY_PREFIX + "entityExpansionLimit";
 216 
 217     /**
 218      * JDK element attribute limit; Note that the existing system property
 219      * "elementAttributeLimit" with no prefix is still observed
 220      */
 221     public static final String JDK_ELEMENT_ATTRIBUTE_LIMIT =
 222             ORACLE_JAXP_PROPERTY_PREFIX + "elementAttributeLimit";
 223 
 224     /**
 225      * JDK maxOccur limit; Note that the existing system property
 226      * "maxOccurLimit" with no prefix is still observed
 227      */
 228     public static final String JDK_MAX_OCCUR_LIMIT =
 229             ORACLE_JAXP_PROPERTY_PREFIX + "maxOccurLimit";
 230 
 231     /**
 232      * JDK total entity size limit
 233      */
 234     public static final String JDK_TOTAL_ENTITY_SIZE_LIMIT =
 235             ORACLE_JAXP_PROPERTY_PREFIX + "totalEntitySizeLimit";
 236 
 237     /**
 238      * JDK maximum general entity size limit
 239      */
 240     public static final String JDK_GENERAL_ENTITY_SIZE_LIMIT =
 241             ORACLE_JAXP_PROPERTY_PREFIX + "maxGeneralEntitySizeLimit";
 242     /**
 243      * JDK maximum parameter entity size limit
 244      */
 245     public static final String JDK_PARAMETER_ENTITY_SIZE_LIMIT =
 246             ORACLE_JAXP_PROPERTY_PREFIX + "maxParameterEntitySizeLimit";
 247     /**
 248      * JDK maximum XML name limit
 249      */
 250     public static final String JDK_XML_NAME_LIMIT =
 251             ORACLE_JAXP_PROPERTY_PREFIX + "maxXMLNameLimit";
 252 
 253     /**
 254      * JDK maxElementDepth limit
 255      */
 256     public static final String JDK_MAX_ELEMENT_DEPTH =
 257             ORACLE_JAXP_PROPERTY_PREFIX + "maxElementDepth";
 258 
 259     /**
 260      * JDK property to allow printing out information from the limit analyzer
 261      */
 262     public static final String JDK_ENTITY_COUNT_INFO =
 263             ORACLE_JAXP_PROPERTY_PREFIX + "getEntityCountInfo";
 264 
 265     //
 266     // Implementation limits: API properties
 267     //
 268     /**
 269      * JDK entity expansion limit; Note that the existing system property
 270      * "entityExpansionLimit" with no prefix is still observed
 271      */
 272     public static final String SP_ENTITY_EXPANSION_LIMIT = "jdk.xml.entityExpansionLimit";
 273 
 274     /**
 275      * JDK element attribute limit; Note that the existing system property
 276      * "elementAttributeLimit" with no prefix is still observed
 277      */
 278     public static final String SP_ELEMENT_ATTRIBUTE_LIMIT =  "jdk.xml.elementAttributeLimit";
 279 
 280     /**
 281      * JDK maxOccur limit; Note that the existing system property
 282      * "maxOccurLimit" with no prefix is still observed
 283      */
 284     public static final String SP_MAX_OCCUR_LIMIT = "jdk.xml.maxOccurLimit";
 285 
 286     /**
 287      * JDK total entity size limit
 288      */
 289     public static final String SP_TOTAL_ENTITY_SIZE_LIMIT = "jdk.xml.totalEntitySizeLimit";
 290 
 291     /**
 292      * JDK maximum general entity size limit
 293      */
 294     public static final String SP_GENERAL_ENTITY_SIZE_LIMIT = "jdk.xml.maxGeneralEntitySizeLimit";
 295     /**
 296      * JDK maximum parameter entity size limit
 297      */
 298     public static final String SP_PARAMETER_ENTITY_SIZE_LIMIT = "jdk.xml.maxParameterEntitySizeLimit";
 299     /**
 300      * JDK maximum XML name limit
 301      */
 302     public static final String SP_XML_NAME_LIMIT = "jdk.xml.maxXMLNameLimit";
 303 
 304     /**
 305      * JDK maxElementDepth limit
 306      */
 307     public static final String SP_MAX_ELEMENT_DEPTH = "jdk.xml.maxElementDepth";
 308 
 309     //legacy System Properties
 310     public final static String ENTITY_EXPANSION_LIMIT = "entityExpansionLimit";
 311     public static final String ELEMENT_ATTRIBUTE_LIMIT = "elementAttributeLimit" ;
 312     public final static String MAX_OCCUR_LIMIT = "maxOccurLimit";
 313 
 314     /**
 315      * A string "yes" that can be used for properties such as getEntityCountInfo
 316      */
 317     public static final String JDK_YES = "yes";
 318 
 319     //
 320     // DOM features
 321     //
 322 
 323     /** Comments feature ("include-comments"). */
 324     public static final String INCLUDE_COMMENTS_FEATURE = "include-comments";
 325 
 326     /** Create cdata nodes feature ("create-cdata-nodes"). */
 327     public static final String CREATE_CDATA_NODES_FEATURE = "create-cdata-nodes";
 328 
 329     /** Feature id: load as infoset. */
 330     public static final String LOAD_AS_INFOSET = "load-as-infoset";
 331 
 332 
 333     //
 334     // Constants: DOM Level 3 feature ids
 335     //
 336 
 337     public static final String DOM_CANONICAL_FORM = "canonical-form";
 338     public static final String DOM_CDATA_SECTIONS ="cdata-sections";
 339 
 340     public static final String DOM_COMMENTS = "comments";
 341 
 342     // REVISIT: this feature seems to have no effect for Xerces
 343 
 344     public static final String DOM_CHARSET_OVERRIDES_XML_ENCODING =
 345     "charset-overrides-xml-encoding";
 346 
 347     public static final String DOM_DATATYPE_NORMALIZATION = "datatype-normalization";
 348 
 349     public static final String DOM_ENTITIES = "entities";
 350     public static final String DOM_INFOSET = "infoset";
 351     public static final String DOM_NAMESPACES = "namespaces";
 352     public static final String DOM_NAMESPACE_DECLARATIONS = "namespace-declarations";
 353     public static final String DOM_SUPPORTED_MEDIATYPES_ONLY =
 354         "supported-media-types-only";
 355 
 356     public static final String DOM_VALIDATE_IF_SCHEMA = "validate-if-schema";
 357     public static final String DOM_VALIDATE = "validate";
 358     public static final String DOM_ELEMENT_CONTENT_WHITESPACE =
 359         "element-content-whitespace";
 360 
 361     // DOM Level 3 features defined in Core:
 362     public static final String DOM_DISCARD_DEFAULT_CONTENT = "discard-default-content";
 363     public static final String DOM_NORMALIZE_CHARACTERS    = "normalize-characters";
 364     public static final String DOM_CHECK_CHAR_NORMALIZATION  = "check-character-normalization";
 365     public static final String DOM_WELLFORMED  = "well-formed";
 366     public static final String DOM_SPLIT_CDATA = "split-cdata-sections";
 367 
 368     // Load and Save
 369     public static final String DOM_FORMAT_PRETTY_PRINT = "format-pretty-print";
 370     public static final String DOM_XMLDECL = "xml-declaration";
 371     public static final String DOM_UNKNOWNCHARS = "unknown-characters";
 372     public static final String DOM_CERTIFIED =  "certified";
 373     public static final String DOM_DISALLOW_DOCTYPE =  "disallow-doctype";
 374     public static final String DOM_IGNORE_UNKNOWN_CHARACTER_DENORMALIZATIONS =  "ignore-unknown-character-denormalizations";
 375 
 376     // DOM Properties
 377     public static final String DOM_RESOURCE_RESOLVER = "resource-resolver";
 378     public static final String DOM_ERROR_HANDLER = "error-handler";
 379     public static final String DOM_SCHEMA_TYPE = "schema-type";
 380     public static final String DOM_SCHEMA_LOCATION = "schema-location";
 381     public static final String DOM_ANCESTOR_CHECCK = "ancestor-check";
 382     // XSModel
 383     public static final String DOM_PSVI = "psvi";
 384 
 385 
 386     // xerces features
 387 
 388     /** Xerces features prefix ("http://apache.org/xml/features/"). */
 389     public static final String XERCES_FEATURE_PREFIX = "http://apache.org/xml/features/";
 390 
 391     /** Schema validation feature ("validation/schema"). */
 392     public static final String SCHEMA_VALIDATION_FEATURE = "validation/schema";
 393 
 394     /** Expose schema normalized values */
 395     public static final String SCHEMA_NORMALIZED_VALUE = "validation/schema/normalized-value";
 396 
 397     /** Send schema default value via characters() */
 398     public static final String SCHEMA_ELEMENT_DEFAULT = "validation/schema/element-default";
 399 
 400     /** Schema full constraint checking ("validation/schema-full-checking"). */
 401     public static final String SCHEMA_FULL_CHECKING = "validation/schema-full-checking";
 402 
 403     /** Augment Post-Schema-Validation-Infoset */
 404     public static final String SCHEMA_AUGMENT_PSVI = "validation/schema/augment-psvi";
 405 
 406     /** Dynamic validation feature ("validation/dynamic"). */
 407     public static final String DYNAMIC_VALIDATION_FEATURE = "validation/dynamic";
 408 
 409     /** Warn on duplicate attribute declaration feature ("validation/warn-on-duplicate-attdef"). */
 410     public static final String WARN_ON_DUPLICATE_ATTDEF_FEATURE = "validation/warn-on-duplicate-attdef";
 411 
 412     /** Warn on undeclared element feature ("validation/warn-on-undeclared-elemdef"). */
 413     public static final String WARN_ON_UNDECLARED_ELEMDEF_FEATURE = "validation/warn-on-undeclared-elemdef";
 414 
 415     /** Warn on duplicate entity declaration feature ("warn-on-duplicate-entitydef"). */
 416     public static final String WARN_ON_DUPLICATE_ENTITYDEF_FEATURE = "warn-on-duplicate-entitydef";
 417 
 418     /** Allow Java encoding names feature ("allow-java-encodings"). */
 419     public static final String ALLOW_JAVA_ENCODINGS_FEATURE = "allow-java-encodings";
 420 
 421     /** Disallow DOCTYPE declaration feature ("disallow-doctype-decl"). */
 422     public static final String DISALLOW_DOCTYPE_DECL_FEATURE = "disallow-doctype-decl";
 423 
 424     /** Continue after fatal error feature ("continue-after-fatal-error"). */
 425     public static final String CONTINUE_AFTER_FATAL_ERROR_FEATURE = "continue-after-fatal-error";
 426 
 427     /** Load dtd grammar when nonvalidating feature ("nonvalidating/load-dtd-grammar"). */
 428     public static final String LOAD_DTD_GRAMMAR_FEATURE = "nonvalidating/load-dtd-grammar";
 429 
 430     /** Load external dtd when nonvalidating feature ("nonvalidating/load-external-dtd"). */
 431     public static final String LOAD_EXTERNAL_DTD_FEATURE = "nonvalidating/load-external-dtd";
 432 
 433     /** Defer node expansion feature ("dom/defer-node-expansion"). */
 434     public static final String DEFER_NODE_EXPANSION_FEATURE = "dom/defer-node-expansion";
 435 
 436     /** Create entity reference nodes feature ("dom/create-entity-ref-nodes"). */
 437     public static final String CREATE_ENTITY_REF_NODES_FEATURE = "dom/create-entity-ref-nodes";
 438 
 439     /** Include ignorable whitespace feature ("dom/include-ignorable-whitespace"). */
 440     public static final String INCLUDE_IGNORABLE_WHITESPACE = "dom/include-ignorable-whitespace";
 441 
 442     /** Default attribute values feature ("validation/default-attribute-values"). */
 443     public static final String DEFAULT_ATTRIBUTE_VALUES_FEATURE = "validation/default-attribute-values";
 444 
 445     /** Validate content models feature ("validation/validate-content-models"). */
 446     public static final String VALIDATE_CONTENT_MODELS_FEATURE = "validation/validate-content-models";
 447 
 448     /** Validate datatypes feature ("validation/validate-datatypes"). */
 449     public static final String VALIDATE_DATATYPES_FEATURE = "validation/validate-datatypes";
 450 
 451     /** Balance syntax trees feature ("validation/balance-syntax-trees"). */
 452     public static final String BALANCE_SYNTAX_TREES = "validation/balance-syntax-trees";
 453 
 454     /** Notify character references feature (scanner/notify-char-refs"). */
 455     public static final String NOTIFY_CHAR_REFS_FEATURE = "scanner/notify-char-refs";
 456 
 457     /** Notify built-in (&amp;amp;, etc.) references feature (scanner/notify-builtin-refs"). */
 458     public static final String NOTIFY_BUILTIN_REFS_FEATURE = "scanner/notify-builtin-refs";
 459 
 460     /** Standard URI conformant feature ("standard-uri-conformant"). */
 461     public static final String STANDARD_URI_CONFORMANT_FEATURE = "standard-uri-conformant";
 462 
 463     /** Generate synthetic annotations feature ("generate-synthetic-annotations"). */
 464     public static final String GENERATE_SYNTHETIC_ANNOTATIONS_FEATURE = "generate-synthetic-annotations";
 465 
 466     /** Validate annotations feature ("validate-annotations"). */
 467     public static final String VALIDATE_ANNOTATIONS_FEATURE = "validate-annotations";
 468 
 469 
 470         /** Honour all schemaLocations feature ("honour-all-schemaLocations"). */
 471     public static final String HONOUR_ALL_SCHEMALOCATIONS_FEATURE = "honour-all-schemaLocations";
 472 
 473     /** Namespace growth feature ("namespace-growth"). */
 474     public static final String NAMESPACE_GROWTH_FEATURE = "namespace-growth";
 475 
 476     /** Tolerate duplicates feature ("internal/tolerate-duplicates"). */
 477     public static final String TOLERATE_DUPLICATES_FEATURE = "internal/tolerate-duplicates";
 478 
 479     /** XInclude processing feature ("xinclude"). */
 480     public static final String XINCLUDE_FEATURE = "xinclude";
 481 
 482     /** XInclude fixup base URIs feature ("xinclude/fixup-base-uris"). */
 483     public static final String XINCLUDE_FIXUP_BASE_URIS_FEATURE = "xinclude/fixup-base-uris";
 484 
 485     /** XInclude fixup language feature ("xinclude/fixup-language"). */
 486     public static final String XINCLUDE_FIXUP_LANGUAGE_FEATURE = "xinclude/fixup-language";
 487 
 488      /**
 489      * Feature to ignore xsi:type attributes on elements during validation,
 490      * until a global element declaration is found. ("validation/schema/ignore-xsi-type-until-elemdecl")
 491      * If this feature is on when validating a document, then beginning at the validation root
 492      * element, xsi:type attributes are ignored until a global element declaration is
 493      * found for an element.  Once a global element declaration has been found, xsi:type
 494      * attributes will start being processed for the sub-tree beginning at the element for
 495      * which the declaration was found.
 496      *
 497      * Suppose an element A has two element children, B and C.
 498      *
 499      * If a global element declaration is found for A, xsi:type attributes on A, B and C,
 500      * and all of B and C's descendents, will be processed.
 501      *
 502      * If no global element declaration is found for A or B, but one is found for C,
 503      * then xsi:type attributes will be ignored on A and B (and any descendents of B,
 504      * until a global element declaration is found), but xsi:type attributes will be
 505      * processed for C and all of C's descendents.
 506      *
 507      * Once xsi:type attributes stop being ignored for a subtree, they do not start
 508      * being ignored again, even if more elements are encountered for which no global
 509      * element declaration can be found.
 510      */
 511     public static final String IGNORE_XSI_TYPE_FEATURE = "validation/schema/ignore-xsi-type-until-elemdecl";
 512 
 513     /** Perform checking of ID/IDREFs ("validation/id-idref-checking") */
 514     public static final String ID_IDREF_CHECKING_FEATURE = "validation/id-idref-checking";
 515 
 516     /** Feature to ignore errors caused by identity constraints ("validation/identity-constraint-checking") */
 517     public static final String IDC_CHECKING_FEATURE = "validation/identity-constraint-checking";
 518 
 519     /** Feature to ignore errors caused by unparsed entities ("validation/unparsed-entity-checking") */
 520     public static final String UNPARSED_ENTITY_CHECKING_FEATURE = "validation/unparsed-entity-checking";
 521 
 522     /**
 523      * Internal feature. When set to true the schema validator will only use
 524      * schema components from the grammar pool provided.
 525      */
 526     public static final String USE_GRAMMAR_POOL_ONLY_FEATURE = "internal/validation/schema/use-grammar-pool-only";
 527 
 528     /** Internal performance related feature:
 529      * false - the parser settings (features/properties) have not changed between 2 parses
 530      * true - the parser settings have changed between 2 parses
 531      * NOTE: this feature should only be set by the parser configuration.
 532      */
 533     public static final String PARSER_SETTINGS = "internal/parser-settings";
 534 
 535 
 536     /** Feature to make XML Processor XInclude Aware */
 537     public static final String XINCLUDE_AWARE = "xinclude-aware";
 538 
 539     /** Ignore xsi:schemaLocation and xsi:noNamespaceSchemaLocation. */
 540     public static final String IGNORE_SCHEMA_LOCATION_HINTS = "validation/schema/ignore-schema-location-hints";
 541 
 542     /**
 543      * When true, the schema processor will change characters events
 544      * to ignorableWhitespaces events, when characters are expected to
 545      * only contain ignorable whitespaces.
 546      */
 547     public static final String CHANGE_IGNORABLE_CHARACTERS_INTO_IGNORABLE_WHITESPACES =
 548         "validation/change-ignorable-characters-into-ignorable-whitespaces";
 549 
 550     // xerces properties
 551 
 552     /** Xerces properties prefix ("http://apache.org/xml/properties/"). */
 553     public static final String XERCES_PROPERTY_PREFIX = "http://apache.org/xml/properties/";
 554 
 555     /** Current element node property ("dom/current-element-node"). */
 556     public static final String CURRENT_ELEMENT_NODE_PROPERTY = "dom/current-element-node";
 557 
 558     /** Document class name property ("dom/document-class-name"). */
 559     public static final String DOCUMENT_CLASS_NAME_PROPERTY = "dom/document-class-name";
 560 
 561     /** Symbol table property ("internal/symbol-table"). */
 562     public static final String SYMBOL_TABLE_PROPERTY = "internal/symbol-table";
 563 
 564     /** Error reporter property ("internal/error-reporter"). */
 565     public static final String ERROR_REPORTER_PROPERTY = "internal/error-reporter";
 566 
 567     /** Error handler property ("internal/error-handler"). */
 568     public static final String ERROR_HANDLER_PROPERTY = "internal/error-handler";
 569 
 570     /** XInclude handler property ("internal/xinclude-handler"). */
 571     public static final String XINCLUDE_HANDLER_PROPERTY = "internal/xinclude-handler";
 572 
 573     /** XPointer handler property ("internal/xpointer-handler"). */
 574     public static final String XPOINTER_HANDLER_PROPERTY = "internal/xpointer-handler";
 575 
 576     /** Entity manager property ("internal/entity-manager"). */
 577     public static final String ENTITY_MANAGER_PROPERTY = "internal/entity-manager";
 578     /** Input buffer size property ("input-buffer-size"). */
 579     public static final String BUFFER_SIZE_PROPERTY = "input-buffer-size";
 580 
 581     /** Security manager property ("security-manager"). */
 582     public static final String SECURITY_MANAGER_PROPERTY = "security-manager";
 583 
 584     /** Locale property ("locale"). */
 585     public static final String LOCALE_PROPERTY = "locale";
 586 
 587     /** property identifier: security manager. */
 588     public static final String SECURITY_MANAGER =
 589         Constants.XERCES_PROPERTY_PREFIX + Constants.SECURITY_MANAGER_PROPERTY;
 590 
 591 
 592     public static final String ENTITY_RESOLVER_PROPERTY = "internal/entity-resolver";
 593 
 594     /** Grammar pool property ("internal/grammar-pool"). */
 595     public static final String XMLGRAMMAR_POOL_PROPERTY = "internal/grammar-pool";
 596 
 597     /** Datatype validator factory ("internal/datatype-validator-factory"). */
 598     public static final String DATATYPE_VALIDATOR_FACTORY_PROPERTY = "internal/datatype-validator-factory";
 599 
 600     /** Document scanner property ("internal/document-scanner"). */
 601     public static final String DOCUMENT_SCANNER_PROPERTY = "internal/document-scanner";
 602 
 603     /** DTD scanner property ("internal/dtd-scanner"). */
 604     public static final String DTD_SCANNER_PROPERTY = "internal/dtd-scanner";
 605 
 606     /** DTD processor property ("internal/dtd-processor"). */
 607     public static final String DTD_PROCESSOR_PROPERTY = "internal/dtd-processor";
 608 
 609     /** Validator property ("internal/validator"). */
 610     public static final String VALIDATOR_PROPERTY = "internal/validator";
 611 
 612     /** Validator property ("internal/validator/dtd"). */
 613     public static final String DTD_VALIDATOR_PROPERTY = "internal/validator/dtd";
 614 
 615     /** Validator property ("internal/validator/schema"). */
 616     public static final String SCHEMA_VALIDATOR_PROPERTY = "internal/validator/schema";
 617 
 618     /** No namespace schema location property ("schema/external-schemaLocation"). */
 619     public static final String SCHEMA_LOCATION = "schema/external-schemaLocation";
 620 
 621     /** Schema location property ("schema/external-noNamespaceSchemaLocation"). */
 622     public static final String SCHEMA_NONS_LOCATION = "schema/external-noNamespaceSchemaLocation";
 623 
 624     /** Namespace binder property ("internal/namespace-binder"). */
 625     public static final String NAMESPACE_BINDER_PROPERTY = "internal/namespace-binder";
 626 
 627     /** Namespace context property ("internal/namespace-context"). */
 628     public static final String NAMESPACE_CONTEXT_PROPERTY = "internal/namespace-context";
 629 
 630     /** Validation manager property ("internal/validation-manager"). */
 631     public static final String VALIDATION_MANAGER_PROPERTY = "internal/validation-manager";
 632 
 633     /** Schema type for the root element in a document ("validation/schema/root-type-definition"). */
 634     public static final String ROOT_TYPE_DEFINITION_PROPERTY = "validation/schema/root-type-definition";
 635 
 636     /** Schema element declaration for the root element in a document ("validation/schema/root-element-declaration"). */
 637     public static final String ROOT_ELEMENT_DECLARATION_PROPERTY = "validation/schema/root-element-declaration";
 638 
 639     /** XPointer Schema property ("xpointer-schema"). */
 640     public static final String XPOINTER_SCHEMA_PROPERTY = "xpointer-schema";
 641 
 642     /** Schema element declaration for the root element in a document ("internal/validation/schema/dv-factory"). */
 643     public static final String SCHEMA_DV_FACTORY_PROPERTY = "internal/validation/schema/dv-factory";
 644 
 645 
 646     // general constants
 647 
 648     /** Element PSVI is stored in augmentations using string "ELEMENT_PSVI" */
 649     public final static String ELEMENT_PSVI = "ELEMENT_PSVI";
 650 
 651     /** Attribute PSVI is stored in augmentations using string "ATTRIBUTE_PSVI" */
 652     public final static String ATTRIBUTE_PSVI = "ATTRIBUTE_PSVI";
 653 
 654     /**
 655      * Boolean indicating whether an attribute is declared in the DTD is stored
 656      * in augmentations using the string "ATTRIBUTE_DECLARED". The absence of this
 657      * augmentation indicates that the attribute was not declared in the DTD.
 658      */
 659     public final static String ATTRIBUTE_DECLARED = "ATTRIBUTE_DECLARED";
 660 
 661 
 662     /**
 663      * {@link org.w3c.dom.TypeInfo} associated with current element/attribute
 664      * is stored in augmentations using this string as the key.
 665      *
 666      * This will ultimately controls {@link com.sun.org.apache.xerces.internal.parsers.AbstractDOMParser}
 667      * regarding what object the DOM will return from
 668      * {@link org.w3c.dom.Attr#getSchemaTypeInfo()} and
 669      * {@link org.w3c.dom.Element#getSchemaTypeInfo()} and
 670      */
 671     public final static String TYPEINFO = "org.w3c.dom.TypeInfo";
 672 
 673     /**
 674      * Whether an attribute is an id or not is stored in augmentations
 675      * using this string as the key. The value is {@link Boolean#TRUE}
 676      * or {@link Boolean#FALSE}.
 677      *
 678      * This will ultimately controls {@link com.sun.org.apache.xerces.internal.parsers.AbstractDOMParser}
 679      * about whether it will mark an attribute as ID or not.
 680      */
 681     public final static String ID_ATTRIBUTE = "ID_ATTRIBUTE";
 682 
 683     // XML version constants
 684 
 685     /**
 686      * Boolean indicating whether an entity referenced in the document has
 687      * not been read is stored in augmentations using the string "ENTITY_SKIPPED".
 688      * The absence of this augmentation indicates that the entity had a
 689      * declaration and was expanded.
 690      */
 691     public final static String ENTITY_SKIPPED = "ENTITY_SKIPPED";
 692 
 693     /**
 694      * Boolean indicating whether a character is a probable white space
 695      * character (ch <= 0x20) that was the replacement text of a character
 696      * reference is stored in augmentations using the string "CHAR_REF_PROBABLE_WS".
 697      * The absence of this augmentation indicates that the character is not
 698      * probable white space and/or was not included from a character reference.
 699      */
 700     public final static String CHAR_REF_PROBABLE_WS = "CHAR_REF_PROBABLE_WS";
 701 
 702     /** Boolean indicating if this entity is the last opened entity.
 703      *
 704      *@see com.sun.org.apache.xerces.internal.impl.XMLEntityManager#endEntity()
 705      *@see com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl#endEntity()
 706      *@see com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl#endEntity()
 707      */
 708     public final static String LAST_ENTITY = "LAST_ENTITY";
 709 
 710     // XML version constants
 711     public final static short XML_VERSION_ERROR = -1;
 712     public final static short XML_VERSION_1_0 = 1;
 713     public final static short XML_VERSION_1_1 = 2;
 714 
 715 
 716 
 717     // DOM related constants
 718     public final static String ANONYMOUS_TYPE_NAMESPACE =
 719         "http://apache.org/xml/xmlschema/1.0/anonymousTypes";
 720 
 721 
 722 
 723     // Constant to enable Schema 1.1 support
 724     public final static boolean SCHEMA_1_1_SUPPORT = false;
 725     public final static short SCHEMA_VERSION_1_0          = 1;
 726     public final static short SCHEMA_VERSION_1_0_EXTENDED = 2;
 727 
 728     // private
 729 
 730     /** SAX features. */
 731     private static final String[] fgSAXFeatures = {
 732             NAMESPACES_FEATURE,
 733             NAMESPACE_PREFIXES_FEATURE,
 734             STRING_INTERNING_FEATURE,
 735             VALIDATION_FEATURE,
 736             EXTERNAL_GENERAL_ENTITIES_FEATURE,
 737             EXTERNAL_PARAMETER_ENTITIES_FEATURE,
 738     };
 739 
 740     /** SAX properties. */
 741     private static final String[] fgSAXProperties = {
 742             DECLARATION_HANDLER_PROPERTY,
 743             LEXICAL_HANDLER_PROPERTY,
 744             DOM_NODE_PROPERTY,
 745             XML_STRING_PROPERTY,
 746     };
 747 
 748     /** Xerces features. */
 749     private static final String[] fgXercesFeatures = {
 750 
 751         SCHEMA_VALIDATION_FEATURE,
 752         SCHEMA_FULL_CHECKING,
 753         DYNAMIC_VALIDATION_FEATURE,
 754         WARN_ON_DUPLICATE_ATTDEF_FEATURE,
 755         WARN_ON_UNDECLARED_ELEMDEF_FEATURE,
 756         ALLOW_JAVA_ENCODINGS_FEATURE,
 757         CONTINUE_AFTER_FATAL_ERROR_FEATURE,
 758         LOAD_DTD_GRAMMAR_FEATURE,
 759         LOAD_EXTERNAL_DTD_FEATURE,
 760         //DEFER_NODE_EXPANSION_FEATURE,
 761         CREATE_ENTITY_REF_NODES_FEATURE,
 762         XINCLUDE_AWARE,
 763         INCLUDE_IGNORABLE_WHITESPACE,
 764         //GRAMMAR_ACCESS_FEATURE,
 765         DEFAULT_ATTRIBUTE_VALUES_FEATURE,
 766         VALIDATE_CONTENT_MODELS_FEATURE,
 767         VALIDATE_DATATYPES_FEATURE,
 768         BALANCE_SYNTAX_TREES,
 769         NOTIFY_CHAR_REFS_FEATURE,
 770         NOTIFY_BUILTIN_REFS_FEATURE,
 771         DISALLOW_DOCTYPE_DECL_FEATURE,
 772         STANDARD_URI_CONFORMANT_FEATURE,
 773         GENERATE_SYNTHETIC_ANNOTATIONS_FEATURE,
 774         VALIDATE_ANNOTATIONS_FEATURE,
 775         HONOUR_ALL_SCHEMALOCATIONS_FEATURE,
 776         XINCLUDE_FEATURE,
 777         XINCLUDE_FIXUP_BASE_URIS_FEATURE,
 778         XINCLUDE_FIXUP_LANGUAGE_FEATURE,
 779         IGNORE_XSI_TYPE_FEATURE,
 780         ID_IDREF_CHECKING_FEATURE,
 781         IDC_CHECKING_FEATURE,
 782         UNPARSED_ENTITY_CHECKING_FEATURE,
 783         NAMESPACE_GROWTH_FEATURE,
 784         TOLERATE_DUPLICATES_FEATURE,
 785     };
 786 
 787     /** Xerces properties. */
 788     private static final String[] fgXercesProperties = {
 789             CURRENT_ELEMENT_NODE_PROPERTY,
 790             DOCUMENT_CLASS_NAME_PROPERTY,
 791             SYMBOL_TABLE_PROPERTY,
 792             ERROR_HANDLER_PROPERTY,
 793             ERROR_REPORTER_PROPERTY,
 794             ENTITY_MANAGER_PROPERTY,
 795             ENTITY_RESOLVER_PROPERTY,
 796             XMLGRAMMAR_POOL_PROPERTY,
 797             DATATYPE_VALIDATOR_FACTORY_PROPERTY,
 798             DOCUMENT_SCANNER_PROPERTY,
 799             DTD_SCANNER_PROPERTY,
 800             VALIDATOR_PROPERTY,
 801             SCHEMA_LOCATION,
 802             SCHEMA_NONS_LOCATION,
 803             VALIDATION_MANAGER_PROPERTY,
 804             BUFFER_SIZE_PROPERTY,
 805             SECURITY_MANAGER_PROPERTY,
 806             ROOT_TYPE_DEFINITION_PROPERTY,
 807             ROOT_ELEMENT_DECLARATION_PROPERTY,
 808             LOCALE_PROPERTY,
 809             SCHEMA_DV_FACTORY_PROPERTY,
 810     };
 811 
 812     /** Empty enumeration. */
 813     private static final Enumeration fgEmptyEnumeration = new ArrayEnumeration(new Object[] {});
 814 
 815     //
 816     // Constructors
 817     //
 818 
 819     /** This class cannot be instantiated. */
 820     private Constants() {}
 821 
 822     //
 823     // Public methods
 824     //
 825 
 826     // sax
 827 
 828     /** Returns an enumeration of the SAX features. */
 829     public static Enumeration getSAXFeatures() {
 830         return fgSAXFeatures.length > 0
 831         ? new ArrayEnumeration(fgSAXFeatures) : fgEmptyEnumeration;
 832     } // getSAXFeatures():Enumeration
 833 
 834     /** Returns an enumeration of the SAX properties. */
 835     public static Enumeration getSAXProperties() {
 836         return fgSAXProperties.length > 0
 837         ? new ArrayEnumeration(fgSAXProperties) : fgEmptyEnumeration;
 838     } // getSAXProperties():Enumeration
 839 
 840     // xerces
 841 
 842     /** Returns an enumeration of the Xerces features. */
 843     public static Enumeration getXercesFeatures() {
 844         return fgXercesFeatures.length > 0
 845         ? new ArrayEnumeration(fgXercesFeatures) : fgEmptyEnumeration;
 846     } // getXercesFeatures():Enumeration
 847 
 848     /** Returns an enumeration of the Xerces properties. */
 849     public static Enumeration getXercesProperties() {
 850         return fgXercesProperties.length > 0
 851         ? new ArrayEnumeration(fgXercesProperties) : fgEmptyEnumeration;
 852     } // getXercesProperties():Enumeration
 853 
 854     //
 855     // Classes
 856     //
 857 
 858     /**
 859      * An array enumeration.
 860      *
 861      * @author Andy Clark, IBM
 862      */
 863     static class ArrayEnumeration
 864     implements Enumeration {
 865 
 866         //
 867         // Data
 868         //
 869 
 870         /** Array. */
 871         private Object[] array;
 872 
 873         /** Index. */
 874         private int index;
 875 
 876         //
 877         // Constructors
 878         //
 879 
 880         /** Constructs an array enumeration. */
 881         public ArrayEnumeration(Object[] array) {
 882             this.array = array;
 883         } // <init>(Object[])
 884 
 885         //
 886         // Enumeration methods
 887         //
 888 
 889         /**
 890          * Tests if this enumeration contains more elements.
 891          *
 892          * @return  <code>true</code> if this enumeration contains more elements;
 893          *          <code>false</code> otherwise.
 894          * @since   JDK1.0
 895          */
 896         public boolean hasMoreElements() {
 897             return index < array.length;
 898         } // hasMoreElement():boolean
 899 
 900         /**
 901          * Returns the next element of this enumeration.
 902          *
 903          * @return     the next element of this enumeration.
 904          * @exception  NoSuchElementException  if no more elements exist.
 905          * @since      JDK1.0
 906          */
 907         public Object nextElement() {
 908             if (index < array.length) {
 909                 return array[index++];
 910             }
 911             throw new NoSuchElementException();
 912         } // nextElement():Object
 913 
 914     } // class ArrayEnumeration
 915 
 916     //
 917     // MAIN
 918     //
 919 
 920     /** Prints all of the constants to standard output. */
 921     public static void main(String[] argv) {
 922 
 923         print("SAX features:", SAX_FEATURE_PREFIX, fgSAXFeatures);
 924         print("SAX properties:", SAX_PROPERTY_PREFIX, fgSAXProperties);
 925         print("Xerces features:", XERCES_FEATURE_PREFIX, fgXercesFeatures);
 926         print("Xerces properties:", XERCES_PROPERTY_PREFIX, fgXercesProperties);
 927 
 928     } // main(String[])
 929 
 930     /** Prints a list of features/properties. */
 931     private static void print(String header, String prefix, Object[] array) {
 932         System.out.print(header);
 933         if (array.length > 0) {
 934             System.out.println();
 935             for (int i = 0; i < array.length; i++) {
 936                 System.out.print("  ");
 937                 System.out.print(prefix);
 938                 System.out.println(array[i]);
 939             }
 940         }
 941         else {
 942             System.out.println(" none.");
 943         }
 944     } // print(String,String,Object[])
 945 
 946 } // class Constants