The QXmlEntityResolver class provides an interface to resolve external entities contained in XML data. More...

#include <qxml.h>

Inheritance diagram for QXmlEntityResolver:

Public Functions
virtual QString	errorString () const =0
	The reader calls this function to get an error string if any of the handler functions returns false. More...

virtual bool	resolveEntity (const QString &publicId, const QString &systemId, QXmlInputSource *&ret)=0
	The reader calls this function before it opens any external entity, except the top-level document entity. More...

virtual	~QXmlEntityResolver ()
	Destroys the entity resolver. More...

Detailed Description

The QXmlEntityResolver class provides an interface to resolve external entities contained in XML data.

Note: This class or function is reentrant.

Attention: Module: QtXml

If an application needs to implement customized handling for external entities, it must implement this interface, i.e. resolveEntity(), and register it with QXmlReader::setEntityResolver().

See also: QXmlDTDHandler, QXmlDeclHandler, QXmlContentHandler, QXmlErrorHandler, QXmlLexicalHandler, {Introduction to SAX2}

Definition at line 338 of file qxml.h.

Constructors and Destructors

◆ ~QXmlEntityResolver()

QXmlEntityResolver::~QXmlEntityResolver ( )

inlinevirtual

Destroys the entity resolver.

Definition at line 341 of file qxml.h.

341 {}

Functions

◆ errorString()

QString QXmlEntityResolver::errorString ( ) const

pure virtual

The reader calls this function to get an error string if any of the handler functions returns false.

Implemented in QXmlDefaultHandler.

Referenced by QXmlSimpleReaderPrivate::parsePEReference(), and QXmlSimpleReaderPrivate::processReference().

◆ resolveEntity()

bool QXmlEntityResolver::resolveEntity	(	const QString &	publicId,
		const QString &	systemId,
		QXmlInputSource *&	ret
	)

pure virtual

The reader calls this function before it opens any external entity, except the top-level document entity.

The application may request the reader to resolve the entity itself (ret is 0) or to use an entirely different input source (ret points to the input source).

The reader deletes the input source ret when it no longer needs it, so you should allocate it on the heap with new.

The argument publicId is the public identifier of the external entity, systemId is the system identifier of the external entity and ret is the return value of this function. If ret is 0 the reader should resolve the entity itself, if it is non-zero it must point to an input source which the reader uses instead.

If this function returns false the reader stops parsing and reports an error. The reader uses the function errorString() to get the error message.