## org.apache.xerces.impl.dtd
Class XMLDTDValidator

    java.lang.Object
      |
      +--org.apache.xerces.impl.dtd.XMLDTDValidator

All Implemented Interfaces:
  RevalidationHandler, org.apache.xerces.xni.parser.XMLComponent, org.apache.xerces.xni.parser.XMLDocumentFilter, org.apache.xerces.xni.XMLDocumentHandler, org.apache.xerces.xni.parser.XMLDocumentSource, XMLDTDValidatorFilter

Direct Known Subclasses:
  XML11DTDValidator, XMLNSDTDValidator

public class XMLDTDValidator
extends java.lang.Object
implements org.apache.xerces.xni.parser.XMLComponent, org.apache.xerces.xni.parser.XMLDocumentFilter, XMLDTDValidatorFilter, RevalidationHandler

The DTD validator. The validator implements a document filter: receiving document events from the scanner; validating the content and structure; augmenting the InfoSet, if applicable; and notifying the parser of the information resulting from the validation process.

Formerly, this component also handled DTD events and grammar construction. To facilitate the development of a meaningful DTD grammar caching/preparsing framework, this functionality has been moved into the XMLDTDLoader class. Therefore, this class no longer implements the DTDFilter or DTDContentModelFilter interfaces.

This component requires the following features and properties from the component manager that uses it:

- http://xml.org/sax/features/namespaces
- http://xml.org/sax/features/validation
- http://apache.org/xml/features/validation/dynamic
- http://apache.org/xml/properties/internal/symbol-table
- http://apache.org/xml/properties/internal/error-reporter
- http://apache.org/xml/properties/internal/grammar-pool
- http://apache.org/xml/properties/internal/datatype-validator-factory

# INTERNAL:

  Usage of this class is not supported. It may be altered or removed at any time.

Version:
  $Id: XMLDTDValidator.java 572055 2007-09-02 17:55:43Z mrglavas $
Author:
  Eric Ye, IBM, Andy Clark, IBM, Jeffrey Rodriguez IBM, Neil Graham, IBM

Field Summary
`protected static java.lang.String` `BALANCE_SYNTAX_TREES` Feature identifier: balance syntax trees.
`protected static java.lang.String` `DATATYPE_VALIDATOR_FACTORY` Property identifier: datatype validator factory.
`protected static java.lang.String` `DYNAMIC_VALIDATION` Feature identifier: dynamic validation.
`protected static java.lang.String` `ERROR_REPORTER` Property identifier: error reporter.
`protected boolean` `fBalanceSyntaxTrees` Controls whether the DTD grammar produces balanced syntax trees.
`protected DTDDVFactory` `fDatatypeValidatorFactory` Datatype validator factory.
`protected org.apache.xerces.xni.XMLLocator` `fDocLocation`
`protected org.apache.xerces.xni.XMLDocumentHandler` `fDocumentHandler` Document handler.
`protected org.apache.xerces.xni.parser.XMLDocumentSource` `fDocumentSource`
`protected DTDGrammar` `fDTDGrammar` DTD Grammar.
`protected boolean` `fDTDValidation` Validation against only DTD
`protected boolean` `fDynamicValidation` Dynamic validation.
`protected XMLErrorReporter` `fErrorReporter` Error reporter.
`protected DTDGrammarBucket` `fGrammarBucket` Grammar bucket.
`protected org.apache.xerces.xni.grammars.XMLGrammarPool` `fGrammarPool`
`protected org.apache.xerces.xni.NamespaceContext` `fNamespaceContext` Namespace support.
`protected boolean` `fNamespaces` Namespaces.
`protected boolean` `fSeenDoctypeDecl` True if seen DOCTYPE declaration.
`protected SymbolTable` `fSymbolTable` Symbol table.
`protected DatatypeValidator` `fValENTITIES` Datatype validator: ENTITIES.
`protected DatatypeValidator` `fValENTITY` Datatype validator: ENTITY.
`protected DatatypeValidator` `fValID` Datatype validator: ID.
`protected boolean` `fValidation` Validation.
`protected ValidationManager` `fValidationManager`
`protected ValidationState` `fValidationState`
`protected DatatypeValidator` `fValIDRef` Datatype validator: IDREF.
`protected DatatypeValidator` `fValIDRefs` Datatype validator: IDREFS.
`protected DatatypeValidator` `fValNMTOKEN` Datatype validator: NMTOKEN.
`protected DatatypeValidator` `fValNMTOKENS` Datatype validator: NMTOKENS.
`protected DatatypeValidator` `fValNOTATION` Datatype validator: NOTATION.
`protected boolean` `fWarnDuplicateAttdef` warn on duplicate attribute definition, this feature works only when validation is true
`protected static java.lang.String` `GRAMMAR_POOL` Property identifier: grammar pool.
`protected static java.lang.String` `NAMESPACES` Feature identifier: namespaces.
`protected static java.lang.String` `PARSER_SETTINGS`
`protected static java.lang.String` `SYMBOL_TABLE` Property identifier: symbol table.
`protected static java.lang.String` `VALIDATION` Feature identifier: validation.
`protected static java.lang.String` `VALIDATION_MANAGER`
`protected static java.lang.String` `WARN_ON_DUPLICATE_ATTDEF` Feature identifier: warn on duplicate attdef

Constructor Summary
`XMLDTDValidator()` Default constructor.

Method Summary
`protected void` `addDTDDefaultAttrsAndValidate(org.apache.xerces.xni.QName elementName, int elementIndex, org.apache.xerces.xni.XMLAttributes attributes)` Add default attributes and validate.
`boolean` `characterData(java.lang.String data, org.apache.xerces.xni.Augmentations augs)` Character content.
`void` `characters(org.apache.xerces.xni.XMLString text, org.apache.xerces.xni.Augmentations augs)` Character content.
`void` `comment(org.apache.xerces.xni.XMLString text, org.apache.xerces.xni.Augmentations augs)` A comment.
`void` `doctypeDecl(java.lang.String rootElement, java.lang.String publicId, java.lang.String systemId, org.apache.xerces.xni.Augmentations augs)` Notifies of the presence of the DOCTYPE line in the document.
`void` `emptyElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.XMLAttributes attributes, org.apache.xerces.xni.Augmentations augs)` An empty element.
`void` `endCDATA(org.apache.xerces.xni.Augmentations augs)` The end of a CDATA section.
`void` `endDocument(org.apache.xerces.xni.Augmentations augs)` The end of the document.
`void` `endElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.Augmentations augs)` The end of an element.
`void` `endGeneralEntity(java.lang.String name, org.apache.xerces.xni.Augmentations augs)` This method notifies the end of a general entity.
`protected void` `endNamespaceScope(org.apache.xerces.xni.QName element, org.apache.xerces.xni.Augmentations augs, boolean isEmpty)`
`org.apache.xerces.xni.XMLDocumentHandler` `getDocumentHandler()` Returns the document handler
`org.apache.xerces.xni.parser.XMLDocumentSource` `getDocumentSource()` Returns the document source
`protected java.lang.String` `getExternalEntityRefInAttrValue(java.lang.String nonNormalizedValue)` Checks entities in attribute values for standalone VC.
`java.lang.Boolean` `getFeatureDefault(java.lang.String featureId)` Returns the default state for a feature, or null if this component does not want to report a default value for this feature.
`java.lang.Object` `getPropertyDefault(java.lang.String propertyId)` Returns the default state for a property, or null if this component does not want to report a default value for this property.
`java.lang.String[]` `getRecognizedFeatures()` Returns a list of feature identifiers that are recognized by this component.
`java.lang.String[]` `getRecognizedProperties()` Returns a list of property identifiers that are recognized by this component.
`protected void` `handleEndElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.Augmentations augs, boolean isEmpty)` Handle end element.
`protected boolean` `handleStartElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.XMLAttributes attributes, org.apache.xerces.xni.Augmentations augs)` Handle element
`boolean` `hasGrammar()` Returns true if the validator has a DTD grammar
`void` `ignorableWhitespace(org.apache.xerces.xni.XMLString text, org.apache.xerces.xni.Augmentations augs)` Ignorable whitespace.
`protected void` `init()` initialization
`protected boolean` `invalidStandaloneAttDef(org.apache.xerces.xni.QName element, org.apache.xerces.xni.QName attribute)` Returns true if invalid standalone attribute definition.
`protected boolean` `isSpace(int c)`
`void` `processingInstruction(java.lang.String target, org.apache.xerces.xni.XMLString data, org.apache.xerces.xni.Augmentations augs)` A processing instruction.
`void` `reset(org.apache.xerces.xni.parser.XMLComponentManager componentManager)` Resets the component.
`void` `setDocumentHandler(org.apache.xerces.xni.XMLDocumentHandler documentHandler)` Sets the document handler to receive information about the document.
`void` `setDocumentSource(org.apache.xerces.xni.parser.XMLDocumentSource source)` Sets the document source
`void` `setFeature(java.lang.String featureId, boolean state)` Sets the state of a feature.
`void` `setProperty(java.lang.String propertyId, java.lang.Object value)` Sets the value of a property.
`void` `startCDATA(org.apache.xerces.xni.Augmentations augs)` The start of a CDATA section.
`void` `startDocument(org.apache.xerces.xni.XMLLocator locator, java.lang.String encoding, org.apache.xerces.xni.NamespaceContext namespaceContext, org.apache.xerces.xni.Augmentations augs)` The start of the document.
`void` `startElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.XMLAttributes attributes, org.apache.xerces.xni.Augmentations augs)` The start of an element.
`void` `startGeneralEntity(java.lang.String name, org.apache.xerces.xni.XMLResourceIdentifier identifier, java.lang.String encoding, org.apache.xerces.xni.Augmentations augs)` This method notifies the start of a general entity.
`protected void` `startNamespaceScope(org.apache.xerces.xni.QName element, org.apache.xerces.xni.XMLAttributes attributes, org.apache.xerces.xni.Augmentations augs)`
`void` `textDecl(java.lang.String version, java.lang.String encoding, org.apache.xerces.xni.Augmentations augs)` Notifies of the presence of a TextDecl line in an entity.
`boolean` `validate()` Return true if validator must validate the document
`protected void` `validateDTDattribute(org.apache.xerces.xni.QName element, java.lang.String attValue, XMLAttributeDecl attributeDecl)` Validate attributes in DTD fashion.
`void` `xmlDecl(java.lang.String version, java.lang.String encoding, java.lang.String standalone, org.apache.xerces.xni.Augmentations augs)` Notifies of the presence of an XMLDecl line in the document.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### NAMESPACES

    protected static final java.lang.String NAMESPACES

  Feature identifier: namespaces.

### VALIDATION

    protected static final java.lang.String VALIDATION

  Feature identifier: validation.

### DYNAMIC_VALIDATION

    protected static final java.lang.String DYNAMIC_VALIDATION

  Feature identifier: dynamic validation.

### BALANCE_SYNTAX_TREES

    protected static final java.lang.String BALANCE_SYNTAX_TREES

  Feature identifier: balance syntax trees.

### WARN_ON_DUPLICATE_ATTDEF

    protected static final java.lang.String WARN_ON_DUPLICATE_ATTDEF

  Feature identifier: warn on duplicate attdef

### PARSER_SETTINGS

    protected static final java.lang.String PARSER_SETTINGS

### SYMBOL_TABLE

    protected static final java.lang.String SYMBOL_TABLE

  Property identifier: symbol table.

### ERROR_REPORTER

    protected static final java.lang.String ERROR_REPORTER

  Property identifier: error reporter.

### GRAMMAR_POOL

    protected static final java.lang.String GRAMMAR_POOL

  Property identifier: grammar pool.

### DATATYPE_VALIDATOR_FACTORY

    protected static final java.lang.String DATATYPE_VALIDATOR_FACTORY

  Property identifier: datatype validator factory.

### VALIDATION_MANAGER

    protected static final java.lang.String VALIDATION_MANAGER

### fValidationManager

    protected ValidationManager fValidationManager

### fValidationState

    protected final ValidationState fValidationState

### fNamespaces

    protected boolean fNamespaces

  Namespaces.

### fValidation

    protected boolean fValidation

  Validation.

### fDTDValidation

    protected boolean fDTDValidation

  Validation against only DTD

### fDynamicValidation

    protected boolean fDynamicValidation

  Dynamic validation. This state of this feature is only useful when the validation feature is set to `true`.

### fBalanceSyntaxTrees

    protected boolean fBalanceSyntaxTrees

  Controls whether the DTD grammar produces balanced syntax trees.

### fWarnDuplicateAttdef

    protected boolean fWarnDuplicateAttdef

  warn on duplicate attribute definition, this feature works only when validation is true

### fSymbolTable

    protected SymbolTable fSymbolTable

  Symbol table.

### fErrorReporter

    protected XMLErrorReporter fErrorReporter

  Error reporter.

### fGrammarPool

    protected org.apache.xerces.xni.grammars.XMLGrammarPool fGrammarPool

### fGrammarBucket

    protected DTDGrammarBucket fGrammarBucket

  Grammar bucket.

### fDocLocation

    protected org.apache.xerces.xni.XMLLocator fDocLocation

### fNamespaceContext

    protected org.apache.xerces.xni.NamespaceContext fNamespaceContext

  Namespace support.

### fDatatypeValidatorFactory

    protected DTDDVFactory fDatatypeValidatorFactory

  Datatype validator factory.

### fDocumentHandler

    protected org.apache.xerces.xni.XMLDocumentHandler fDocumentHandler

  Document handler.

### fDocumentSource

    protected org.apache.xerces.xni.parser.XMLDocumentSource fDocumentSource

### fDTDGrammar

    protected DTDGrammar fDTDGrammar

  DTD Grammar.

### fSeenDoctypeDecl

    protected boolean fSeenDoctypeDecl

  True if seen DOCTYPE declaration.

### fValID

    protected DatatypeValidator fValID

  Datatype validator: ID.

### fValIDRef

    protected DatatypeValidator fValIDRef

  Datatype validator: IDREF.

### fValIDRefs

    protected DatatypeValidator fValIDRefs

  Datatype validator: IDREFS.

### fValENTITY

    protected DatatypeValidator fValENTITY

  Datatype validator: ENTITY.

### fValENTITIES

    protected DatatypeValidator fValENTITIES

  Datatype validator: ENTITIES.

### fValNMTOKEN

    protected DatatypeValidator fValNMTOKEN

  Datatype validator: NMTOKEN.

### fValNMTOKENS

    protected DatatypeValidator fValNMTOKENS

  Datatype validator: NMTOKENS.

### fValNOTATION

    protected DatatypeValidator fValNOTATION

  Datatype validator: NOTATION.

Constructor Detail

### XMLDTDValidator

    public XMLDTDValidator()

  Default constructor.

Method Detail

### reset

    public void reset(org.apache.xerces.xni.parser.XMLComponentManager componentManager)
               throws org.apache.xerces.xni.parser.XMLConfigurationException

  Description copied from interface: `org.apache.xerces.xni.parser.XMLComponent`
  Resets the component. The component can query the component manager about any features and properties that affect the operation of the component.
  Specified by:
    `reset` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Following copied from interface: `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `componentManager` - The component manager.
  Throws:
    `XNIException` - Thrown by component on initialization error.

### getRecognizedFeatures

    public java.lang.String[] getRecognizedFeatures()

  Returns a list of feature identifiers that are recognized by this component. This method may return null if no features are recognized by this component.
  Specified by:
    `getRecognizedFeatures` in interface `org.apache.xerces.xni.parser.XMLComponent`

### setFeature

    public void setFeature(java.lang.String featureId,
                           boolean state)
                    throws org.apache.xerces.xni.parser.XMLConfigurationException

  Sets the state of a feature. This method is called by the component manager any time after reset when a feature changes state.

  Note: Components should silently ignore features that do not affect the operation of the component.

  Specified by:
    `setFeature` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `featureId` - The feature identifier.
    `state` - The state of the feature.
  Throws:
    `SAXNotRecognizedException` - The component should not throw this exception.
    `SAXNotSupportedException` - The component should not throw this exception.

### getRecognizedProperties

    public java.lang.String[] getRecognizedProperties()

  Returns a list of property identifiers that are recognized by this component. This method may return null if no properties are recognized by this component.
  Specified by:
    `getRecognizedProperties` in interface `org.apache.xerces.xni.parser.XMLComponent`

### setProperty

    public void setProperty(java.lang.String propertyId,
                            java.lang.Object value)
                     throws org.apache.xerces.xni.parser.XMLConfigurationException

  Sets the value of a property. This method is called by the component manager any time after reset when a property changes value.

  Note: Components should silently ignore properties that do not affect the operation of the component.

  Specified by:
    `setProperty` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `propertyId` - The property identifier.
    `value` - The value of the property.
  Throws:
    `SAXNotRecognizedException` - The component should not throw this exception.
    `SAXNotSupportedException` - The component should not throw this exception.

### getFeatureDefault

    public java.lang.Boolean getFeatureDefault(java.lang.String featureId)

  Returns the default state for a feature, or null if this component does not want to report a default value for this feature.
  Specified by:
    `getFeatureDefault` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `featureId` - The feature identifier.
  Since:
    Xerces 2.2.0

### getPropertyDefault

    public java.lang.Object getPropertyDefault(java.lang.String propertyId)

  Returns the default state for a property, or null if this component does not want to report a default value for this property.
  Specified by:
    `getPropertyDefault` in interface `org.apache.xerces.xni.parser.XMLComponent`
  Parameters:
    `propertyId` - The property identifier.
  Since:
    Xerces 2.2.0

### setDocumentHandler

    public void setDocumentHandler(org.apache.xerces.xni.XMLDocumentHandler documentHandler)

  Sets the document handler to receive information about the document.
  Specified by:
    `setDocumentHandler` in interface `org.apache.xerces.xni.parser.XMLDocumentSource`

### getDocumentHandler

    public org.apache.xerces.xni.XMLDocumentHandler getDocumentHandler()

  Returns the document handler
  Specified by:
    `getDocumentHandler` in interface `org.apache.xerces.xni.parser.XMLDocumentSource`

### setDocumentSource

    public void setDocumentSource(org.apache.xerces.xni.parser.XMLDocumentSource source)

  Sets the document source
  Specified by:
    `setDocumentSource` in interface `org.apache.xerces.xni.XMLDocumentHandler`

### getDocumentSource

    public org.apache.xerces.xni.parser.XMLDocumentSource getDocumentSource()

  Returns the document source
  Specified by:
    `getDocumentSource` in interface `org.apache.xerces.xni.XMLDocumentHandler`

### startDocument

    public void startDocument(org.apache.xerces.xni.XMLLocator locator,
                              java.lang.String encoding,
                              org.apache.xerces.xni.NamespaceContext namespaceContext,
                              org.apache.xerces.xni.Augmentations augs)
                       throws org.apache.xerces.xni.XNIException

  The start of the document.
  Specified by:
    `startDocument` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `locator` - The system identifier of the entity if the entity is external, null otherwise.
    `encoding` - The auto-detected IANA encoding name of the entity stream. This value will be null in those situations where the entity encoding is not auto-detected (e.g. internal entities or a document entity that is parsed from a java.io.Reader).
    `namespaceContext` - The namespace context in effect at the start of this document. This object represents the current context. Implementors of this class are responsible for copying the namespace bindings from the the current context (and its parent contexts) if that information is important.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### xmlDecl

    public void xmlDecl(java.lang.String version,
                        java.lang.String encoding,
                        java.lang.String standalone,
                        org.apache.xerces.xni.Augmentations augs)
                 throws org.apache.xerces.xni.XNIException

  Notifies of the presence of an XMLDecl line in the document. If present, this method will be called immediately following the startDocument call.
  Specified by:
    `xmlDecl` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `version` - The XML version.
    `encoding` - The IANA encoding name of the document, or null if not specified.
    `standalone` - The standalone value, or null if not specified.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### doctypeDecl

    public void doctypeDecl(java.lang.String rootElement,
                            java.lang.String publicId,
                            java.lang.String systemId,
                            org.apache.xerces.xni.Augmentations augs)
                     throws org.apache.xerces.xni.XNIException

  Notifies of the presence of the DOCTYPE line in the document.
  Specified by:
    `doctypeDecl` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `rootElement` - The name of the root element.
    `publicId` - The public identifier if an external DTD or null if the external DTD is specified using SYSTEM.
    `systemId` - The system identifier if an external DTD, null otherwise.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### startElement

    public void startElement(org.apache.xerces.xni.QName element,
                             org.apache.xerces.xni.XMLAttributes attributes,
                             org.apache.xerces.xni.Augmentations augs)
                      throws org.apache.xerces.xni.XNIException

  The start of an element.
  Specified by:
    `startElement` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `element` - The name of the element.
    `attributes` - The element attributes.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### emptyElement

    public void emptyElement(org.apache.xerces.xni.QName element,
                             org.apache.xerces.xni.XMLAttributes attributes,
                             org.apache.xerces.xni.Augmentations augs)
                      throws org.apache.xerces.xni.XNIException

  An empty element.
  Specified by:
    `emptyElement` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `element` - The name of the element.
    `attributes` - The element attributes.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### characters

    public void characters(org.apache.xerces.xni.XMLString text,
                           org.apache.xerces.xni.Augmentations augs)
                    throws org.apache.xerces.xni.XNIException

  Character content.
  Specified by:
    `characters` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `text` - The content.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### ignorableWhitespace

    public void ignorableWhitespace(org.apache.xerces.xni.XMLString text,
                                    org.apache.xerces.xni.Augmentations augs)
                             throws org.apache.xerces.xni.XNIException

  Ignorable whitespace. For this method to be called, the document source must have some way of determining that the text containing only whitespace characters should be considered ignorable. For example, the validator can determine if a length of whitespace characters in the document are ignorable based on the element content model.
  Specified by:
    `ignorableWhitespace` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `text` - The ignorable whitespace.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endElement

    public void endElement(org.apache.xerces.xni.QName element,
                           org.apache.xerces.xni.Augmentations augs)
                    throws org.apache.xerces.xni.XNIException

  The end of an element.
  Specified by:
    `endElement` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `element` - The name of the element.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### startCDATA

    public void startCDATA(org.apache.xerces.xni.Augmentations augs)
                    throws org.apache.xerces.xni.XNIException

  The start of a CDATA section.
  Specified by:
    `startCDATA` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endCDATA

    public void endCDATA(org.apache.xerces.xni.Augmentations augs)
                  throws org.apache.xerces.xni.XNIException

  The end of a CDATA section.
  Specified by:
    `endCDATA` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endDocument

    public void endDocument(org.apache.xerces.xni.Augmentations augs)
                     throws org.apache.xerces.xni.XNIException

  The end of the document.
  Specified by:
    `endDocument` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### comment

    public void comment(org.apache.xerces.xni.XMLString text,
                        org.apache.xerces.xni.Augmentations augs)
                 throws org.apache.xerces.xni.XNIException

  A comment.
  Specified by:
    `comment` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `text` - The text in the comment.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by application to signal an error.

### processingInstruction

    public void processingInstruction(java.lang.String target,
                                      org.apache.xerces.xni.XMLString data,
                                      org.apache.xerces.xni.Augmentations augs)
                               throws org.apache.xerces.xni.XNIException

  A processing instruction. Processing instructions consist of a target name and, optionally, text data. The data is only meaningful to the application.

  Typically, a processing instruction's data will contain a series of pseudo-attributes. These pseudo-attributes follow the form of element attributes but are not parsed or presented to the application as anything other than text. The application is responsible for parsing the data.

  Specified by:
    `processingInstruction` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `target` - The target.
    `data` - The data or null if none specified.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### startGeneralEntity

    public void startGeneralEntity(java.lang.String name,
                                   org.apache.xerces.xni.XMLResourceIdentifier identifier,
                                   java.lang.String encoding,
                                   org.apache.xerces.xni.Augmentations augs)
                            throws org.apache.xerces.xni.XNIException

  This method notifies the start of a general entity.

  Note: This method is not called for entity references appearing as part of attribute values.

  Specified by:
    `startGeneralEntity` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `name` - The name of the general entity.
    `identifier` - The resource identifier.
    `encoding` - The auto-detected IANA encoding name of the entity stream. This value will be null in those situations where the entity encoding is not auto-detected (e.g. internal entities or a document entity that is parsed from a java.io.Reader).
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### endGeneralEntity

    public void endGeneralEntity(java.lang.String name,
                                 org.apache.xerces.xni.Augmentations augs)
                          throws org.apache.xerces.xni.XNIException

  This method notifies the end of a general entity.

  Note: This method is not called for entity references appearing as part of attribute values.

  Specified by:
    `endGeneralEntity` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `name` - The name of the entity.
    `augs` - Additional information that may include infoset augmentations
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### textDecl

    public void textDecl(java.lang.String version,
                         java.lang.String encoding,
                         org.apache.xerces.xni.Augmentations augs)
                  throws org.apache.xerces.xni.XNIException

  Notifies of the presence of a TextDecl line in an entity. If present, this method will be called immediately following the startParameterEntity call.

  Note: This method is only called for external parameter entities referenced in the DTD.

  Specified by:
    `textDecl` in interface `org.apache.xerces.xni.XMLDocumentHandler`
  Parameters:
    `version` - The XML version, or null if not specified.
    `encoding` - The IANA encoding name of the entity.
    `augs` - Additional information that may include infoset augmentations.
  Throws:
    `org.apache.xerces.xni.XNIException` - Thrown by handler to signal an error.

### hasGrammar

    public final boolean hasGrammar()

  Description copied from interface: `XMLDTDValidatorFilter`
  Returns true if the validator has a DTD grammar
  Specified by:
    `hasGrammar` in interface `XMLDTDValidatorFilter`
  Following copied from interface: `org.apache.xerces.impl.dtd.XMLDTDValidatorFilter`
  Returns:
    true if the validator has a DTD grammar

### validate

    public final boolean validate()

  Description copied from interface: `XMLDTDValidatorFilter`
  Return true if validator must validate the document
  Specified by:
    `validate` in interface `XMLDTDValidatorFilter`
  Following copied from interface: `org.apache.xerces.impl.dtd.XMLDTDValidatorFilter`
  Returns:
    true if validator must validate the document

### addDTDDefaultAttrsAndValidate

    protected void addDTDDefaultAttrsAndValidate(org.apache.xerces.xni.QName elementName,
                                                 int elementIndex,
                                                 org.apache.xerces.xni.XMLAttributes attributes)
                                          throws org.apache.xerces.xni.XNIException

  Add default attributes and validate.

### getExternalEntityRefInAttrValue

    protected java.lang.String getExternalEntityRefInAttrValue(java.lang.String nonNormalizedValue)

  Checks entities in attribute values for standalone VC.

### validateDTDattribute

    protected void validateDTDattribute(org.apache.xerces.xni.QName element,
                                        java.lang.String attValue,
                                        XMLAttributeDecl attributeDecl)
                                 throws org.apache.xerces.xni.XNIException

  Validate attributes in DTD fashion.

### invalidStandaloneAttDef

    protected boolean invalidStandaloneAttDef(org.apache.xerces.xni.QName element,
                                              org.apache.xerces.xni.QName attribute)

  Returns true if invalid standalone attribute definition.

### init

    protected void init()

  initialization

### handleStartElement

    protected boolean handleStartElement(org.apache.xerces.xni.QName element,
                                         org.apache.xerces.xni.XMLAttributes attributes,
                                         org.apache.xerces.xni.Augmentations augs)
                                  throws org.apache.xerces.xni.XNIException

  Handle element
  Returns:
    true if validator is removed from the pipeline

### startNamespaceScope

    protected void startNamespaceScope(org.apache.xerces.xni.QName element,
                                       org.apache.xerces.xni.XMLAttributes attributes,
                                       org.apache.xerces.xni.Augmentations augs)

### handleEndElement

    protected void handleEndElement(org.apache.xerces.xni.QName element,
                                    org.apache.xerces.xni.Augmentations augs,
                                    boolean isEmpty)
                             throws org.apache.xerces.xni.XNIException

  Handle end element.

### endNamespaceScope

    protected void endNamespaceScope(org.apache.xerces.xni.QName element,
                                     org.apache.xerces.xni.Augmentations augs,
                                     boolean isEmpty)

### isSpace

    protected boolean isSpace(int c)

### characterData

    public boolean characterData(java.lang.String data,
                                 org.apache.xerces.xni.Augmentations augs)

  Description copied from interface: `RevalidationHandler`
  Character content.
  Specified by:
    `characterData` in interface `RevalidationHandler`
  Following copied from interface: `org.apache.xerces.impl.RevalidationHandler`
  Parameters:
    `data` - The character data.
    `augs` - Augmentations
  Returns:
    True if data is whitespace only

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