org.apache.xerces.impl.dtd
Class XMLDTDValidator

java.lang.Object
  |
  +--org.apache.xerces.impl.dtd.XMLDTDValidator
All Implemented Interfaces:
org.apache.xerces.xni.parser.XMLComponent, org.apache.xerces.xni.parser.XMLDocumentFilter, org.apache.xerces.xni.XMLDocumentHandler, org.apache.xerces.xni.parser.XMLDocumentSource

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

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:

Version:
$Id: XMLDTDValidator.java,v 1.27 2002/06/13 23:04:14 neilg Exp $
Author:
Eric Ye, IBM, Andy Clark, IBM, Jeffrey Rodriguez IBM, Neil Graham, IBM

Field Summary
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  DTDDVFactory fDatatypeValidatorFactory
          Datatype validator factory.
protected  org.apache.xerces.xni.XMLResourceIdentifier fDocLocation
           
protected  org.apache.xerces.xni.XMLDocumentHandler fDocumentHandler
          Document handler.
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  boolean fNamespaces
          Namespaces.
protected  SymbolTable fSymbolTable
          Symbol table.
protected  boolean fValidation
          Validation.
protected  ValidationManager fValidationManager
           
protected  ValidationState fValidationState
           
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[] RECOGNIZED_FEATURES
          Recognized features.
protected static java.lang.String[] RECOGNIZED_PROPERTIES
          Recognized properties.
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
 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.
 void endPrefixMapping(java.lang.String prefix, org.apache.xerces.xni.Augmentations augs)
          The end of a namespace prefix mapping.
 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  void handleStartElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.XMLAttributes attributes)
          Handle element.
 void ignorableWhitespace(org.apache.xerces.xni.XMLString text, org.apache.xerces.xni.Augmentations augs)
          Ignorable whitespace.
 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 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.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.
 void startPrefixMapping(java.lang.String prefix, java.lang.String uri, org.apache.xerces.xni.Augmentations augs)
          The start of a namespace prefix mapping.
 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.
 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.

See Also:
Constant Field Values

VALIDATION

protected static final java.lang.String VALIDATION
Feature identifier: validation.

See Also:
Constant Field Values

DYNAMIC_VALIDATION

protected static final java.lang.String DYNAMIC_VALIDATION
Feature identifier: dynamic validation.

See Also:
Constant Field Values

WARN_ON_DUPLICATE_ATTDEF

protected static final java.lang.String WARN_ON_DUPLICATE_ATTDEF
Feature identifier: warn on duplicate attdef

See Also:
Constant Field Values

SYMBOL_TABLE

protected static final java.lang.String SYMBOL_TABLE
Property identifier: symbol table.

See Also:
Constant Field Values

ERROR_REPORTER

protected static final java.lang.String ERROR_REPORTER
Property identifier: error reporter.

See Also:
Constant Field Values

GRAMMAR_POOL

protected static final java.lang.String GRAMMAR_POOL
Property identifier: grammar pool.

See Also:
Constant Field Values

DATATYPE_VALIDATOR_FACTORY

protected static final java.lang.String DATATYPE_VALIDATOR_FACTORY
Property identifier: datatype validator factory.

See Also:
Constant Field Values

VALIDATION_MANAGER

protected static final java.lang.String VALIDATION_MANAGER
See Also:
Constant Field Values

RECOGNIZED_FEATURES

protected static final java.lang.String[] RECOGNIZED_FEATURES
Recognized features.


RECOGNIZED_PROPERTIES

protected static final java.lang.String[] RECOGNIZED_PROPERTIES
Recognized properties.


fValidationManager

protected ValidationManager fValidationManager

fValidationState

protected 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.


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.XMLResourceIdentifier fDocLocation

fDatatypeValidatorFactory

protected DTDDVFactory fDatatypeValidatorFactory
Datatype validator factory.


fDocumentHandler

protected org.apache.xerces.xni.XMLDocumentHandler fDocumentHandler
Document handler.


fDTDGrammar

protected DTDGrammar fDTDGrammar
DTD Grammar.

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
Parameters:
componentManager - The component manager.
org.apache.xerces.xni.parser.XMLConfigurationException

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.
org.apache.xerces.xni.parser.XMLConfigurationException - Thrown for configuration error. In general, components should only throw this exception if it is really a critical error.

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.
org.apache.xerces.xni.parser.XMLConfigurationException - Thrown for configuration error. In general, components should only throw this exception if it is really a critical error.

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
Parameters:
documentHandler - The document handler.

startDocument

public void startDocument(org.apache.xerces.xni.XMLLocator locator,
                          java.lang.String encoding,
                          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).
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.

startPrefixMapping

public void startPrefixMapping(java.lang.String prefix,
                               java.lang.String uri,
                               org.apache.xerces.xni.Augmentations augs)
                        throws org.apache.xerces.xni.XNIException
The start of a namespace prefix mapping. This method will only be called when namespace processing is enabled.

Specified by:
startPrefixMapping in interface org.apache.xerces.xni.XMLDocumentHandler
Parameters:
prefix - The namespace prefix.
uri - The URI bound to the prefix.
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.

endPrefixMapping

public void endPrefixMapping(java.lang.String prefix,
                             org.apache.xerces.xni.Augmentations augs)
                      throws org.apache.xerces.xni.XNIException
The end of a namespace prefix mapping. This method will only be called when namespace processing is enabled.

Specified by:
endPrefixMapping in interface org.apache.xerces.xni.XMLDocumentHandler
Parameters:
prefix - The namespace prefix.
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.

handleStartElement

protected void handleStartElement(org.apache.xerces.xni.QName element,
                                  org.apache.xerces.xni.XMLAttributes attributes)
                           throws org.apache.xerces.xni.XNIException
Handle element.

org.apache.xerces.xni.XNIException

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.

org.apache.xerces.xni.XNIException


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