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# Parser Class Reference

Basic interface for SAX (Simple API for XML) parsers. More...

Inheritance diagram for Parser:

[legend]

List of all members.

## Public Member Functions

Constructors and Destructor
| Parser ()
| The default constructor.
virtual | ~Parser ()
| The destructor.
The parser interfaces
virtual void | setEntityResolver (EntityResolver *const resolver)=0
| Allow an application to register a custom entity resolver.
virtual void | setDTDHandler (DTDHandler *const handler)=0
| Allow an application to register a DTD event handler.
virtual void | setDocumentHandler (DocumentHandler *const handler)=0
| Allow an application to register a document event handler.
virtual void | setErrorHandler (ErrorHandler *const handler)=0
| Allow an application to register an error event handler.
virtual void | parse (const InputSource &source)=0
| Parse an XML document.
virtual void | parse (const XMLCh *const systemId)=0
| Parse an XML document from a system identifier (URI).
virtual void | parse (const char *const systemId)=0
| Parse an XML document from a system identifier (URI).

## Detailed Description

Basic interface for SAX (Simple API for XML) parsers.

All SAX parsers must implement this basic interface: it allows applications to register handlers for different types of events and to initiate a parse from a URI, or a character stream.

All SAX parsers must also implement a zero-argument constructor (though other constructors are also allowed).

SAX parsers are reusable but not re-entrant: the application may reuse a parser object (possibly with a different input source) once the first parse has completed successfully, but it may not invoke the parse() methods recursively within a parse.

See also:
  EntityResolver::EntityResolver

  DTDHandler::DTDHandler

  DocumentHandler::DocumentHandler

  ErrorHandler::ErrorHandler

  HandlerBase::HandlerBase

  InputSource::InputSource

## Constructor & Destructor Documentation

Parser::Parser | ( |  | ) |

The default constructor.

virtual Parser::~Parser | ( |  | ) | `[virtual]`

The destructor.

## Member Function Documentation

virtual void Parser::setEntityResolver | ( | EntityResolver *const | resolver | ) | `[pure virtual]`

Allow an application to register a custom entity resolver.

If the application does not register an entity resolver, the SAX parser will resolve system identifiers and open connections to entities itself (this is the default behaviour implemented in HandlerBase).

Applications may register a new or different entity resolver in the middle of a parse, and the SAX parser must begin using the new resolver immediately.

Parameters:

  | resolver | The object for resolving entities.

See also:
  EntityResolver::EntityResolver

  HandlerBase::HandlerBase

Implemented in SAXParser.

virtual void Parser::setDTDHandler | ( | DTDHandler *const | handler | ) | `[pure virtual]`

Allow an application to register a DTD event handler.

If the application does not register a DTD handler, all DTD events reported by the SAX parser will be silently ignored (this is the default behaviour implemented by HandlerBase).

Applications may register a new or different handler in the middle of a parse, and the SAX parser must begin using the new handler immediately.

Parameters:

  | handler | The DTD handler.

See also:
  DTDHandler::DTDHandler

  HandlerBase::HandlerBase

Implemented in SAXParser.

virtual void Parser::setDocumentHandler | ( | DocumentHandler *const | handler | ) | `[pure virtual]`

Allow an application to register a document event handler.

If the application does not register a document handler, all document events reported by the SAX parser will be silently ignored (this is the default behaviour implemented by HandlerBase).

Applications may register a new or different handler in the middle of a parse, and the SAX parser must begin using the new handler immediately.

Parameters:

  | handler | The document handler.

See also:
  DocumentHandler::DocumentHandler

  HandlerBase::HandlerBase

Implemented in SAXParser.

virtual void Parser::setErrorHandler | ( | ErrorHandler *const | handler | ) | `[pure virtual]`

Allow an application to register an error event handler.

If the application does not register an error event handler, all error events reported by the SAX parser will be silently ignored, except for fatalError, which will throw a SAXException (this is the default behaviour implemented by HandlerBase).

Applications may register a new or different handler in the middle of a parse, and the SAX parser must begin using the new handler immediately.

Parameters:

  | handler | The error handler.

See also:
  ErrorHandler::ErrorHandler

  SAXException::SAXException

  HandlerBase::HandlerBase

Implemented in SAXParser.

virtual void Parser::parse | ( | const InputSource & | source | ) | `[pure virtual]`

Parse an XML document.

The application can use this method to instruct the SAX parser to begin parsing an XML document from any valid input source (a character stream, a byte stream, or a URI).

Applications may not invoke this method while a parse is in progress (they should create a new Parser instead for each additional XML document). Once a parse is complete, an application may reuse the same Parser object, possibly with a different input source.

Parameters:

  | source | The input source for the top-level of the XML document.

Exceptions:

  | SAXException | Any SAX exception, possibly wrapping another exception.
  | XMLException | An exception from the parser or client handler code.

See also:
  InputSource::InputSource

  setEntityResolver

  setDTDHandler

  setDocumentHandler

  setErrorHandler

Implemented in SAXParser.

virtual void Parser::parse | ( | const XMLCh *const | systemId | ) | `[pure virtual]`

Parse an XML document from a system identifier (URI).

This method is a shortcut for the common case of reading a document from a system identifier. It is the exact equivalent of the following:

parse(new URLInputSource(systemId));

If the system identifier is a URL, it must be fully resolved by the application before it is passed to the parser.

Parameters:

  | systemId | The system identifier (URI).

Exceptions:

  | SAXException | Any SAX exception, possibly wrapping another exception.
  | XMLException | An exception from the parser or client handler code.

See also:
  parse(InputSource)

Implemented in SAXParser.

virtual void Parser::parse | ( | const char *const | systemId | ) | `[pure virtual]`

Parse an XML document from a system identifier (URI).

This method is a shortcut for the common case of reading a document from a system identifier. It is the exact equivalent of the following:

parse(new URLInputSource(systemId));

If the system identifier is a URL, it must be fully resolved by the application before it is passed to the parser.

Parameters:

  | systemId | The system identifier (URI).

Exceptions:

  | SAXException | Any SAX exception, possibly wrapping another exception.
  | XMLException | An exception from the parser or client handler code.

See also:
  parse(InputSource)

Implemented in SAXParser.

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

- Parser.hpp

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