org.apache.xerces.impl

Class XMLNamespaceBinder

java.lang.Object

org.apache.xerces.impl.XMLNamespaceBinder

All Implemented Interfaces:

XMLComponent, XMLDocumentFilter, XMLDocumentSource, XMLDocumentHandler

Direct Known Subclasses:

XML11NamespaceBinder

public class XMLNamespaceBinder
extends Object
implements XMLComponent, XMLDocumentFilter

This class performs namespace binding on the startElement and endElement method calls and passes all other methods through to the registered document handler. This class can be configured to only pass the start and end prefix mappings (start/endPrefixMapping).

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

• http://xml.org/sax/features/namespaces
• http://apache.org/xml/properties/internal/symbol-table
• http://apache.org/xml/properties/internal/error-reporter

Version:

$Id$

Author:

Andy Clark, IBM

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	ERROR_REPORTER Property identifier: error reporter.
protected XMLDocumentHandler	fDocumentHandler Document handler.
protected XMLDocumentSource	fDocumentSource
protected XMLErrorReporter	fErrorReporter Error reporter.
protected boolean	fNamespaces Namespaces.
protected boolean	fOnlyPassPrefixMappingEvents Only pass start and end prefix mapping events.
protected SymbolTable	fSymbolTable Symbol table.
protected static String	NAMESPACES Feature identifier: namespaces.
protected static String	SYMBOL_TABLE Property identifier: symbol table.

Constructor Summary

Constructors

Constructor and Description
XMLNamespaceBinder() Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	characters(XMLString text, Augmentations augs) Character content.
void	comment(XMLString text, Augmentations augs) A comment.
void	doctypeDecl(String rootElement, String publicId, String systemId, Augmentations augs) Notifies of the presence of the DOCTYPE line in the document.
void	emptyElement(QName element, XMLAttributes attributes, Augmentations augs) An empty element.
void	endCDATA(Augmentations augs) The end of a CDATA section.
void	endDocument(Augmentations augs) The end of the document.
void	endElement(QName element, Augmentations augs) The end of an element.
void	endGeneralEntity(String name, Augmentations augs) This method notifies the end of a general entity.
XMLDocumentHandler	getDocumentHandler() Returns the document handler
XMLDocumentSource	getDocumentSource() Returns the document source
Boolean	getFeatureDefault(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.
boolean	getOnlyPassPrefixMappingEvents() Returns true if the namespace binder only passes the prefix mapping events to the registered document handler; false if the namespace binder passes all document events.
Object	getPropertyDefault(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.
String[]	getRecognizedFeatures() Returns a list of feature identifiers that are recognized by this component.
String[]	getRecognizedProperties() Returns a list of property identifiers that are recognized by this component.
protected void	handleEndElement(QName element, Augmentations augs, boolean isEmpty) Handles end element.
protected void	handleStartElement(QName element, XMLAttributes attributes, Augmentations augs, boolean isEmpty) Handles start element.
void	ignorableWhitespace(XMLString text, Augmentations augs) Ignorable whitespace.
protected boolean	prefixBoundToNullURI(String uri, String localpart)
void	processingInstruction(String target, XMLString data, Augmentations augs) A processing instruction.
void	reset(XMLComponentManager componentManager) Resets the component.
void	setDocumentHandler(XMLDocumentHandler documentHandler) Sets the document handler to receive information about the document.
void	setDocumentSource(XMLDocumentSource source) Sets the document source
void	setFeature(String featureId, boolean state) Sets the state of a feature.
void	setOnlyPassPrefixMappingEvents(boolean onlyPassPrefixMappingEvents) Sets whether the namespace binder only passes the prefix mapping events to the registered document handler or passes all document events.
void	setProperty(String propertyId, Object value) Sets the value of a property during parsing.
void	startCDATA(Augmentations augs) The start of a CDATA section.
void	startDocument(XMLLocator locator, String encoding, NamespaceContext namespaceContext, Augmentations augs) The start of the document.
void	startElement(QName element, XMLAttributes attributes, Augmentations augs) Binds the namespaces.
void	startGeneralEntity(String name, XMLResourceIdentifier identifier, String encoding, Augmentations augs) This method notifies the start of a general entity.
void	textDecl(String version, String encoding, Augmentations augs) Notifies of the presence of a TextDecl line in an entity.
void	xmlDecl(String version, String encoding, String standalone, 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 String NAMESPACES

Feature identifier: namespaces.

See Also:

Constant Field Values

SYMBOL_TABLE

protected static final String SYMBOL_TABLE

Property identifier: symbol table.

See Also:

Constant Field Values

ERROR_REPORTER

protected static final String ERROR_REPORTER

Property identifier: error reporter.

See Also:

Constant Field Values

fNamespaces

protected boolean fNamespaces

Namespaces.

fSymbolTable

protected SymbolTable fSymbolTable

Symbol table.

fErrorReporter

protected XMLErrorReporter fErrorReporter

Error reporter.

fDocumentHandler

protected XMLDocumentHandler fDocumentHandler

Document handler.

fDocumentSource

protected XMLDocumentSource fDocumentSource

fOnlyPassPrefixMappingEvents

protected boolean fOnlyPassPrefixMappingEvents

Only pass start and end prefix mapping events.

Constructor Detail

XMLNamespaceBinder

public XMLNamespaceBinder()

Default constructor.

Method Detail

setOnlyPassPrefixMappingEvents

public void setOnlyPassPrefixMappingEvents(boolean onlyPassPrefixMappingEvents)

Sets whether the namespace binder only passes the prefix mapping events to the registered document handler or passes all document events.

Parameters:

onlyPassPrefixMappingEvents - True to pass only the prefix mapping events; false to pass all events.

getOnlyPassPrefixMappingEvents

public boolean getOnlyPassPrefixMappingEvents()

Returns true if the namespace binder only passes the prefix mapping events to the registered document handler; false if the namespace binder passes all document events.

reset

public void reset(XMLComponentManager componentManager)
           throws XNIException

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 XMLComponent

Parameters:

componentManager - The component manager.

Throws:

SAXException - Thrown by component on initialization error. For example, if a feature or property is required for the operation of the component, the component manager may throw a SAXNotRecognizedException or a SAXNotSupportedException.

XNIException - Thrown by component on initialization error.

getRecognizedFeatures

public 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 XMLComponent

setFeature

public void setFeature(String featureId,
              boolean state)
                throws 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 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.

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

getRecognizedProperties

public 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 XMLComponent

setProperty

public void setProperty(String propertyId,
               Object value)
                 throws XMLConfigurationException

Sets the value of a property during parsing.

Specified by:

setProperty in interface XMLComponent

Parameters:

propertyId -

value -

Throws:

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

getFeatureDefault

public Boolean getFeatureDefault(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 XMLComponent

Parameters:

featureId - The feature identifier.

Since:

Xerces 2.2.0

getPropertyDefault

public Object getPropertyDefault(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 XMLComponent

Parameters:

propertyId - The property identifier.

Since:

Xerces 2.2.0

setDocumentHandler

public void setDocumentHandler(XMLDocumentHandler documentHandler)

Sets the document handler to receive information about the document.

Specified by:

setDocumentHandler in interface XMLDocumentSource

getDocumentHandler

public XMLDocumentHandler getDocumentHandler()

Returns the document handler

Specified by:

getDocumentHandler in interface XMLDocumentSource

setDocumentSource

public void setDocumentSource(XMLDocumentSource source)

Sets the document source

Specified by:

setDocumentSource in interface XMLDocumentHandler

getDocumentSource

public XMLDocumentSource getDocumentSource()

Returns the document source

Specified by:

getDocumentSource in interface XMLDocumentHandler

startGeneralEntity

public void startGeneralEntity(String name,
                      XMLResourceIdentifier identifier,
                      String encoding,
                      Augmentations augs)
                        throws 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 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:

XNIException - Thrown by handler to signal an error.

textDecl

public void textDecl(String version,
            String encoding,
            Augmentations augs)
              throws XNIException

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

Note: This method will never be called for the document entity; it is only called for external general entities referenced in document content.

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

Specified by:

textDecl in interface 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:

XNIException - Thrown by handler to signal an error.

startDocument

public void startDocument(XMLLocator locator,
                 String encoding,
                 NamespaceContext namespaceContext,
                 Augmentations augs)
                   throws XNIException

The start of the document.

Specified by:

startDocument in interface 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:

XNIException - Thrown by handler to signal an error.

xmlDecl

public void xmlDecl(String version,
           String encoding,
           String standalone,
           Augmentations augs)
             throws 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 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:

XNIException - Thrown by handler to signal an error.

doctypeDecl

public void doctypeDecl(String rootElement,
               String publicId,
               String systemId,
               Augmentations augs)
                 throws XNIException

Notifies of the presence of the DOCTYPE line in the document.

Specified by:

doctypeDecl in interface 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:

XNIException - Thrown by handler to signal an error.

comment

public void comment(XMLString text,
           Augmentations augs)
             throws XNIException

A comment.

Specified by:

comment in interface XMLDocumentHandler

Parameters:

text - The text in the comment.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by application to signal an error.

processingInstruction

public void processingInstruction(String target,
                         XMLString data,
                         Augmentations augs)
                           throws 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 XMLDocumentHandler

Parameters:

target - The target.

data - The data or null if none specified.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

startElement

public void startElement(QName element,
                XMLAttributes attributes,
                Augmentations augs)
                  throws XNIException

Binds the namespaces. This method will handle calling the document handler to start the prefix mappings.

Note: This method makes use of the fAttributeQName variable. Any contents of the variable will be destroyed. Caller should copy the values out of this temporary variable before calling this method.

Specified by:

startElement in interface XMLDocumentHandler

Parameters:

element - The name of the element.

attributes - The element attributes.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

emptyElement

public void emptyElement(QName element,
                XMLAttributes attributes,
                Augmentations augs)
                  throws XNIException

An empty element.

Specified by:

emptyElement in interface XMLDocumentHandler

Parameters:

element - The name of the element.

attributes - The element attributes.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

characters

public void characters(XMLString text,
              Augmentations augs)
                throws XNIException

Character content.

Specified by:

characters in interface XMLDocumentHandler

Parameters:

text - The content.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

ignorableWhitespace

public void ignorableWhitespace(XMLString text,
                       Augmentations augs)
                         throws 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 XMLDocumentHandler

Parameters:

text - The ignorable whitespace.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

endElement

public void endElement(QName element,
              Augmentations augs)
                throws XNIException

The end of an element.

Specified by:

endElement in interface XMLDocumentHandler

Parameters:

element - The name of the element.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

startCDATA

public void startCDATA(Augmentations augs)
                throws XNIException

The start of a CDATA section.

Specified by:

startCDATA in interface XMLDocumentHandler

Parameters:

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

endCDATA

public void endCDATA(Augmentations augs)
              throws XNIException

The end of a CDATA section.

Specified by:

endCDATA in interface XMLDocumentHandler

Parameters:

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

endDocument

public void endDocument(Augmentations augs)
                 throws XNIException

The end of the document.

Specified by:

endDocument in interface XMLDocumentHandler

Parameters:

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

endGeneralEntity

public void endGeneralEntity(String name,
                    Augmentations augs)
                      throws 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 XMLDocumentHandler

Parameters:

name - The name of the entity.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

handleStartElement

protected void handleStartElement(QName element,
                      XMLAttributes attributes,
                      Augmentations augs,
                      boolean isEmpty)
                           throws XNIException

Handles start element.

Throws:

XNIException

handleEndElement

protected void handleEndElement(QName element,
                    Augmentations augs,
                    boolean isEmpty)
                         throws XNIException

Handles end element.

Throws:

XNIException

prefixBoundToNullURI

protected boolean prefixBoundToNullURI(String uri,
                           String localpart)