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DefaultHandler Class Reference

Default base class for SAX2 handlers. More...

Inheritance diagram for DefaultHandler:

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Collaboration diagram for DefaultHandler:

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List of all members.

Public Methods

 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. More...

virtual void endDocument ()
 Receive notification of the end of the document. More...

virtual void endElement (const XMLCh *const uri, const XMLCh *const localname, const XMLCh *const qname)
 Receive notification of the end of an element. More...

virtual void ignorableWhitespace (const XMLCh *const chars, const unsigned int length)
 Receive notification of ignorable whitespace in element content. More...

virtual void processingInstruction (const XMLCh *const target, const XMLCh *const data)
 Receive notification of a processing instruction. More...

virtual void resetDocument ()
 Reset the Docuemnt object on its reuse. More...

Default implementation of DocumentHandler interface
virtual void setDocumentLocator (const Locator *const locator)
 Receive a Locator object for document events. More...

virtual void startDocument ()
 Receive notification of the beginning of the document. More...

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. More...

virtual void startPrefixMapping (const XMLCh *const prefix, const XMLCh *const uri)
 Receive notification of the start of an namespace prefix mapping. More...

virtual void endPrefixMapping (const XMLCh *const prefix)
 Receive notification of the end of an namespace prefix mapping. More...

virtual void skippedEntity (const XMLCh *const name)
 Receive notification of a skipped entity. More...

Default implementation of the EntityResolver interface.
virtual InputSourceresolveEntity (const XMLCh *const publicId, const XMLCh *const systemId)
 Resolve an external entity. More...

Default implementation of the ErrorHandler interface
virtual void error (const SAXParseException &exc)
 Receive notification of a recoverable parser error. More...

virtual void fatalError (const SAXParseException &exc)
 Report a fatal XML parsing error. More...

virtual void warning (const SAXParseException &exc)
 Receive notification of a parser warning. More...

virtual void resetErrors ()
 Reset the Error handler object on its reuse. More...

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. More...

virtual void resetDocType ()
 Reset the DTD object on its reuse. More...

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. More...

Default implementation of LexicalHandler interface.
virtual void comment (const XMLCh *const chars, const unsigned int length)
 Receive notification of comments. More...

virtual void endCDATA ()
 Receive notification of the end of a CDATA section. More...

virtual void endDTD ()
 Receive notification of the end of the DTD declarations. More...

virtual void endEntity (const XMLCh *const name)
 Receive notification of the end of an entity. More...

virtual void startCDATA ()
 Receive notification of the start of a CDATA section. More...

virtual void startDTD (const XMLCh *const name, const XMLCh *const publicId, const XMLCh *const systemId)
 Receive notification of the start of the DTD declarations. More...

virtual void startEntity (const XMLCh *const name)
 Receive notification of the start of an entity. More...

Default implementation of DeclHandler interface.
virtual void elementDecl (const XMLCh *const name, const XMLCh *const model)
 Report an element type declaration. More...

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. More...

virtual void internalEntityDecl (const XMLCh *const name, const XMLCh *const value)
 Report an internal entity declaration. More...

virtual void externalEntityDecl (const XMLCh *const name, const XMLCh *const publicId, const XMLCh *const systemId)
 Report a parsed external entity declaration. More...


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::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::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::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::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::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::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::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::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::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::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.

NOTE : The current Implementation of SAX2Parser will _NEVER_ call this

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

Implements ContentHandler.

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::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.

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::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::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::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::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::resetDocType   [virtual]
 

Reset the DTD object on its reuse.

See also:
DTDHandler::resetDocType

Implements DTDHandler.

void DefaultHandler::resetDocument   [virtual]
 

Reset the Docuemnt object on its reuse.

See also:
DocumentHandler::resetDocument

void DefaultHandler::resetErrors   [virtual]
 

Reset the Error handler object on its reuse.

See also:
ErrorHandler::resetErrors

Implements ErrorHandler.

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::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::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.

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::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::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::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::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::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.

NOTE : The current Implementation of SAX2Parser will _NEVER_ call this

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::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::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.


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


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