Soprano::Error::Error Class Reference

Represents an error in Soprano. More...

#include <Soprano/Error/Error>

Inheritance diagram for Soprano::Error::Error:

[legend]

List of all members.

Public Member Functions
	Error (const Error &)
	Error (const QString &message, int code=ErrorUnknown)
	Error ()
virtual	~Error ()
int	code () const
bool	isParserError () const
QString	message () const
	operator bool () const
Error &	operator= (const Error &)
ParserError	toParserError () const

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Detailed Description

Represents an error in Soprano.

Author:

Sebastian Trueg <trueg@kde.org>

See also:

Error handling in Soprano

Definition at line 76 of file error.h.

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Constructor & Destructor Documentation

Soprano::Error::Error::Error

(

)

Create an Error object, representing success, i.e.

no error.

Soprano::Error::Error::Error	(	const QString &	message,
		int	code = ErrorUnknown
	)

Create an Error object.

Parameters:

	message	A human-readable error message.
	code	An optional machine-readable error code. Can be one of Soprano::ErrorCode or a user defined value which has to be bigger than ErrorUnknown. The redland backend for example uses error codes ErrorUnknown + redlandCode.

Soprano::Error::Error::Error

(

const Error &

)

Copy constructor.

virtual Soprano::Error::Error::~Error

(

)

[virtual]

Destructor.

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Member Function Documentation

int Soprano::Error::Error::code

(

)

const

An error code.

If the error code is ErrorNone the Error instance represents success. The code can either be one of the values of ErrorCode or a value above ErrorUnknown.

Example: The redland backend defines the error code as:

 ErrorUnknown + librdf_log_message_code()

See also:

ErrorCode

bool Soprano::Error::Error::isParserError

(

)

const

Returns:

true if this Error instance represents a parser error. In that case the error can be converted to a ParserError.

QString Soprano::Error::Error::message

(

)

const

A string explaining the error in detail.

This string is not necessarily translated (this depends on the plugin implementation).

Returns:

An error message describing the error or an empty string for no-error (i.e. success) instances.

Soprano::Error::Error::operator bool

(

)

const [inline]

An Error evalutes to a boolean, indicating if an Error is "set".

Returns:

false if code() == ErrorNone, true otherwise.

Thus, an Error object can easily be checked as follows:

 model.addStatement( s );
 if( model.lastError() ) {
    displayError( model.lastError() );
 }

Definition at line 120 of file error.h.

Error& Soprano::Error::Error::operator=

(

const Error &

)

ParserError Soprano::Error::Error::toParserError

(

)

const

Converts this error into a ParserError.

This has the same effect as

 Error e;
 ParserError p1( e );

Returns:

If isParserError() returns true a ParserError with a valid Locator value, otherwise a ParserError with an empty Locator.

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

• error.h