DefaultHandler Class Reference

Default base class for SAX2 handlers. More...

Inheritance diagram for DefaultHandler:

EntityResolver DTDHandler ContentHandler ErrorHandler LexicalHandler DeclHandler

List of all members.

Public Member Functions

 DefaultHandler ()
virtual ~DefaultHandler ()
Default handlers for the DocumentHandler interface
virtual void characters (const XMLCh *const chars, const unsigned int length)
 Receive notification of character data inside an element.
virtual void endDocument ()
 Receive notification of the end of the document.
virtual void endElement (const XMLCh *const uri, const XMLCh *const localname, const XMLCh *const qname)
 Receive notification of the end of an element.
virtual void ignorableWhitespace (const XMLCh *const chars, const unsigned int length)
 Receive notification of ignorable whitespace in element content.
virtual void processingInstruction (const XMLCh *const target, const XMLCh *const data)
 Receive notification of a processing instruction.
virtual void resetDocument ()
 Reset the Docuemnt object on its reuse.
Default implementation of DocumentHandler interface
virtual void setDocumentLocator (const Locator *const locator)
 Receive a Locator object for document events.
virtual void startDocument ()
 Receive notification of the beginning of the document.
virtual void startElement (const XMLCh *const uri, const XMLCh *const localname, const XMLCh *const qname, const Attributes &attrs)
 Receive notification of the start of an element.
virtual void startPrefixMapping (const XMLCh *const prefix, const XMLCh *const uri)
 Receive notification of the start of an namespace prefix mapping.
virtual void endPrefixMapping (const XMLCh *const prefix)
 Receive notification of the end of an namespace prefix mapping.
virtual void skippedEntity (const XMLCh *const name)
 Receive notification of a skipped entity.
Default implementation of the EntityResolver interface.
virtual InputSourceresolveEntity (const XMLCh *const publicId, const XMLCh *const systemId)
 Resolve an external entity.
Default implementation of the ErrorHandler interface
virtual void error (const SAXParseException &exc)
 Receive notification of a recoverable parser error.
virtual void fatalError (const SAXParseException &exc)
 Report a fatal XML parsing error.
virtual void warning (const SAXParseException &exc)
 Receive notification of a parser warning.
virtual void resetErrors ()
 Reset the Error handler object on its reuse.
Default implementation of DTDHandler interface.
virtual void notationDecl (const XMLCh *const name, const XMLCh *const publicId, const XMLCh *const systemId)
 Receive notification of a notation declaration.
virtual void resetDocType ()
 Reset the DTD object on its reuse.
virtual void unparsedEntityDecl (const XMLCh *const name, const XMLCh *const publicId, const XMLCh *const systemId, const XMLCh *const notationName)
 Receive notification of an unparsed entity declaration.
Default implementation of LexicalHandler interface.
virtual void comment (const XMLCh *const chars, const unsigned int length)
 Receive notification of comments.
virtual void endCDATA ()
 Receive notification of the end of a CDATA section.
virtual void endDTD ()
 Receive notification of the end of the DTD declarations.
virtual void endEntity (const XMLCh *const name)
 Receive notification of the end of an entity.
virtual void startCDATA ()
 Receive notification of the start of a CDATA section.
virtual void startDTD (const XMLCh *const name, const XMLCh *const publicId, const XMLCh *const systemId)
 Receive notification of the start of the DTD declarations.
virtual void startEntity (const XMLCh *const name)
 Receive notification of the start of an entity.
Default implementation of DeclHandler interface.
virtual void elementDecl (const XMLCh *const name, const XMLCh *const model)
 Report an element type declaration.
virtual void attributeDecl (const XMLCh *const eName, const XMLCh *const aName, const XMLCh *const type, const XMLCh *const mode, const XMLCh *const value)
 Report an attribute type declaration.
virtual void internalEntityDecl (const XMLCh *const name, const XMLCh *const value)
 Report an internal entity declaration.
virtual void externalEntityDecl (const XMLCh *const name, const XMLCh *const publicId, const XMLCh *const systemId)
 Report a parsed external entity declaration.


Detailed Description

Default base class for SAX2 handlers.

This class implements the default behaviour for SAX2 interfaces: EntityResolver, DTDHandler, ContentHandler, ErrorHandler, LexicalHandler, and DeclHandler.

Application writers can extend this class when they need to implement only part of an interface; parser writers can instantiate this class to provide default handlers when the application has not supplied its own.

Note that the use of this class is optional.

See also:
EntityResolver::EntityResolver

DTDHandler::DTDHandler

ContentHandler::ContentHandler

ErrorHandler::ErrorHandler

LexicalHandler::LexicalHandler

DeclHandler::DeclHandler


Constructor & Destructor Documentation

DefaultHandler::DefaultHandler (  ) 

virtual DefaultHandler::~DefaultHandler (  )  [virtual]


Member Function Documentation

void DefaultHandler::characters ( const XMLCh *const   chars,
const unsigned int  length 
) [virtual]

Receive notification of character data inside an element.

By default, do nothing. Application writers may override this method to take specific actions for each chunk of character data (such as adding the data to a node or buffer, or printing it to a file).

Parameters:
chars The characters.
length The number of characters to use from the character array.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
DocumentHandler::characters

Implements ContentHandler.

void DefaultHandler::endDocument (  )  [virtual]

Receive notification of the end of the document.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the beginning of a document (such as finalising a tree or closing an output file).

Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
DocumentHandler::endDocument

Implements ContentHandler.

void DefaultHandler::endElement ( const XMLCh *const   uri,
const XMLCh *const   localname,
const XMLCh *const   qname 
) [virtual]

Receive notification of the end of an element.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the end of each element (such as finalising a tree node or writing output to a file).

Parameters:
uri The URI of the asscioated namespace for this element
localname The local part of the element name
qname The QName of this element
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
DocumentHandler::endElement

Implements ContentHandler.

void DefaultHandler::ignorableWhitespace ( const XMLCh *const   chars,
const unsigned int  length 
) [virtual]

Receive notification of ignorable whitespace in element content.

By default, do nothing. Application writers may override this method to take specific actions for each chunk of ignorable whitespace (such as adding data to a node or buffer, or printing it to a file).

Parameters:
chars The whitespace characters.
length The number of characters to use from the character array.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
DocumentHandler::ignorableWhitespace

Implements ContentHandler.

void DefaultHandler::processingInstruction ( const XMLCh *const   target,
const XMLCh *const   data 
) [virtual]

Receive notification of a processing instruction.

By default, do nothing. Application writers may override this method in a subclass to take specific actions for each processing instruction, such as setting status variables or invoking other methods.

Parameters:
target The processing instruction target.
data The processing instruction data, or null if none is supplied.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
DocumentHandler::processingInstruction

Implements ContentHandler.

void DefaultHandler::resetDocument (  )  [virtual]

Reset the Docuemnt object on its reuse.

See also:
DocumentHandler::resetDocument

void DefaultHandler::setDocumentLocator ( const Locator *const   locator  )  [virtual]

Receive a Locator object for document events.

By default, do nothing. Application writers may override this method in a subclass if they wish to store the locator for use with other document events.

Parameters:
locator A locator for all SAX document events.
See also:
DocumentHandler::setDocumentLocator

Locator

Implements ContentHandler.

void DefaultHandler::startDocument (  )  [virtual]

Receive notification of the beginning of the document.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the beginning of a document (such as allocating the root node of a tree or creating an output file).

Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
DocumentHandler::startDocument

Implements ContentHandler.

void DefaultHandler::startElement ( const XMLCh *const   uri,
const XMLCh *const   localname,
const XMLCh *const   qname,
const Attributes attrs 
) [virtual]

Receive notification of the start of an element.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the start of each element (such as allocating a new tree node or writing output to a file).

Parameters:
uri The URI of the asscioated namespace for this element
localname the local part of the element name
qname the QName of this element
attrs The specified or defaulted attributes.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
DocumentHandler::startElement

Implements ContentHandler.

void DefaultHandler::startPrefixMapping ( const XMLCh *const   prefix,
const XMLCh *const   uri 
) [virtual]

Receive notification of the start of an namespace prefix mapping.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the start of each namespace prefix mapping.

Parameters:
prefix The namespace prefix used
uri The namespace URI used.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
DocumentHandler::startPrefixMapping

Implements ContentHandler.

void DefaultHandler::endPrefixMapping ( const XMLCh *const   prefix  )  [virtual]

Receive notification of the end of an namespace prefix mapping.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the end of each namespace prefix mapping.

Parameters:
prefix The namespace prefix used
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
DocumentHandler::endPrefixMapping

Implements ContentHandler.

void DefaultHandler::skippedEntity ( const XMLCh *const   name  )  [virtual]

Receive notification of a skipped entity.

The parser will invoke this method once for each entity skipped. All processors may skip external entities, depending on the values of the features:
http://xml.org/sax/features/external-general-entities
http://xml.org/sax/features/external-parameter-entities

Introduced with SAX2

Parameters:
name The name of the skipped entity. If it is a parameter entity, the name will begin with %, and if it is the external DTD subset, it will be the string [dtd].
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements ContentHandler.

InputSource * DefaultHandler::resolveEntity ( const XMLCh *const   publicId,
const XMLCh *const   systemId 
) [virtual]

Resolve an external entity.

Always return null, so that the parser will use the system identifier provided in the XML document. This method implements the SAX default behaviour: application writers can override it in a subclass to do special translations such as catalog lookups or URI redirection.

Parameters:
publicId The public identifer, or null if none is available.
systemId The system identifier provided in the XML document.
Returns:
The new input source, or null to require the default behaviour. The returned InputSource is owned by the parser which is responsible to clean up the memory.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
EntityResolver::resolveEntity

Implements EntityResolver.

void DefaultHandler::error ( const SAXParseException exc  )  [virtual]

Receive notification of a recoverable parser error.

The default implementation does nothing. Application writers may override this method in a subclass to take specific actions for each error, such as inserting the message in a log file or printing it to the console.

Parameters:
exc The warning information encoded as an exception.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
ErrorHandler::warning

SAXParseException::SAXParseException

Implements ErrorHandler.

void DefaultHandler::fatalError ( const SAXParseException exc  )  [virtual]

Report a fatal XML parsing error.

The default implementation throws a SAXParseException. Application writers may override this method in a subclass if they need to take specific actions for each fatal error (such as collecting all of the errors into a single report): in any case, the application must stop all regular processing when this method is invoked, since the document is no longer reliable, and the parser may no longer report parsing events.

Parameters:
exc The error information encoded as an exception.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
ErrorHandler::fatalError

SAXParseException::SAXParseException

Implements ErrorHandler.

void DefaultHandler::warning ( const SAXParseException exc  )  [virtual]

Receive notification of a parser warning.

The default implementation does nothing. Application writers may override this method in a subclass to take specific actions for each warning, such as inserting the message in a log file or printing it to the console.

Parameters:
exc The warning information encoded as an exception.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.
See also:
ErrorHandler::warning

SAXParseException::SAXParseException

Implements ErrorHandler.

void DefaultHandler::resetErrors (  )  [virtual]

Reset the Error handler object on its reuse.

See also:
ErrorHandler::resetErrors

Implements ErrorHandler.

void DefaultHandler::notationDecl ( const XMLCh *const   name,
const XMLCh *const   publicId,
const XMLCh *const   systemId 
) [virtual]

Receive notification of a notation declaration.

By default, do nothing. Application writers may override this method in a subclass if they wish to keep track of the notations declared in a document.

Parameters:
name The notation name.
publicId The notation public identifier, or null if not available.
systemId The notation system identifier.
See also:
DTDHandler::notationDecl

Implements DTDHandler.

void DefaultHandler::resetDocType (  )  [virtual]

Reset the DTD object on its reuse.

See also:
DTDHandler::resetDocType

Implements DTDHandler.

void DefaultHandler::unparsedEntityDecl ( const XMLCh *const   name,
const XMLCh *const   publicId,
const XMLCh *const   systemId,
const XMLCh *const   notationName 
) [virtual]

Receive notification of an unparsed entity declaration.

By default, do nothing. Application writers may override this method in a subclass to keep track of the unparsed entities declared in a document.

Parameters:
name The entity name.
publicId The entity public identifier, or null if not available.
systemId The entity system identifier.
notationName The name of the associated notation.
See also:
DTDHandler::unparsedEntityDecl

Implements DTDHandler.

void DefaultHandler::comment ( const XMLCh *const   chars,
const unsigned int  length 
) [virtual]

Receive notification of comments.

The Parser will call this method to report each occurence of a comment in the XML document.

The application must not attempt to read from the array outside of the specified range.

Parameters:
chars The characters from the XML document.
length The number of characters to read from the array.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements LexicalHandler.

void DefaultHandler::endCDATA (  )  [virtual]

Receive notification of the end of a CDATA section.

The SAX parser will invoke this method at the end of each CDATA parsed.

Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements LexicalHandler.

void DefaultHandler::endDTD (  )  [virtual]

Receive notification of the end of the DTD declarations.

The SAX parser will invoke this method at the end of the DTD

Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements LexicalHandler.

void DefaultHandler::endEntity ( const XMLCh *const   name  )  [virtual]

Receive notification of the end of an entity.

The SAX parser will invoke this method at the end of an entity

Parameters:
name The name of the entity that is ending.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements LexicalHandler.

void DefaultHandler::startCDATA (  )  [virtual]

Receive notification of the start of a CDATA section.

The SAX parser will invoke this method at the start of each CDATA parsed.

Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements LexicalHandler.

void DefaultHandler::startDTD ( const XMLCh *const   name,
const XMLCh *const   publicId,
const XMLCh *const   systemId 
) [virtual]

Receive notification of the start of the DTD declarations.

The SAX parser will invoke this method at the start of the DTD

Parameters:
name The document type name.
publicId The declared public identifier for the external DTD subset, or null if none was declared.
systemId The declared system identifier for the external DTD subset, or null if none was declared.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements LexicalHandler.

void DefaultHandler::startEntity ( const XMLCh *const   name  )  [virtual]

Receive notification of the start of an entity.

The SAX parser will invoke this method at the start of an entity

Parameters:
name The name of the entity that is starting.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements LexicalHandler.

void DefaultHandler::elementDecl ( const XMLCh *const   name,
const XMLCh *const   model 
) [virtual]

Report an element type declaration.

The content model will consist of the string "EMPTY", the string "ANY", or a parenthesised group, optionally followed by an occurrence indicator. The model will be normalized so that all parameter entities are fully resolved and all whitespace is removed,and will include the enclosing parentheses. Other normalization (such as removing redundant parentheses or simplifying occurrence indicators) is at the discretion of the parser.

Parameters:
name The element type name.
model The content model as a normalized string.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements DeclHandler.

void DefaultHandler::attributeDecl ( const XMLCh *const   eName,
const XMLCh *const   aName,
const XMLCh *const   type,
const XMLCh *const   mode,
const XMLCh *const   value 
) [virtual]

Report an attribute type declaration.

Only the effective (first) declaration for an attribute will be reported.

Parameters:
eName The name of the associated element.
aName The name of the attribute.
type A string representing the attribute type.
mode A string representing the attribute defaulting mode ("#IMPLIED", "#REQUIRED", or "#FIXED") or null if none of these applies.
value A string representing the attribute's default value, or null if there is none.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements DeclHandler.

void DefaultHandler::internalEntityDecl ( const XMLCh *const   name,
const XMLCh *const   value 
) [virtual]

Report an internal entity declaration.

Only the effective (first) declaration for each entity will be reported. All parameter entities in the value will be expanded, but general entities will not.

Parameters:
name The name of the entity. If it is a parameter entity, the name will begin with ''.
value The replacement text of the entity.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements DeclHandler.

void DefaultHandler::externalEntityDecl ( const XMLCh *const   name,
const XMLCh *const   publicId,
const XMLCh *const   systemId 
) [virtual]

Report a parsed external entity declaration.

Only the effective (first) declaration for each entity will be reported.

Parameters:
name The name of the entity. If it is a parameter entity, the name will begin with ''.
publicId The The declared public identifier of the entity, or null if none was declared.
systemId The declared system identifier of the entity.
Exceptions:
SAXException Any SAX exception, possibly wrapping another exception.

Implements DeclHandler.


The documentation for this class was generated from the following file:
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