QSqlError Class Reference |
enum | ErrorType { NoError, ConnectionError, StatementError, TransactionError, UnknownError } |
QSqlError ( const QString & driverText = QString(), const QString & databaseText = QString(), ErrorType type = NoError, int number = -1 ) | |
QSqlError ( const QSqlError & other ) | |
~QSqlError () | |
QString | databaseText () const |
QString | driverText () const |
bool | isValid () const |
int | number () const |
void | setDatabaseText ( const QString & databaseText ) |
void | setDriverText ( const QString & driverText ) |
void | setNumber ( int number ) |
void | setType ( ErrorType type ) |
QString | text () const |
ErrorType | type () const |
QSqlError & | operator= ( const QSqlError & other ) |
The QSqlError class provides SQL database error information.
A QSqlError object can provide database-specific error data, including the driverText() and databaseText() messages (or both concatenated together as text()), and the error number() and type(). The functions all have setters so that you can create and return QSqlError objects from your own classes, for example from your own SQL drivers.
See also QSqlDatabase::lastError() and QSqlQuery::lastError().
This enum type describes the context in which the error occurred, e.g., a connection error, a statement error, etc.
Constant | Value | Description |
---|---|---|
QSqlError::NoError | 0 | No error occurred. |
QSqlError::ConnectionError | 1 | Connection error. |
QSqlError::StatementError | 2 | SQL statement syntax error. |
QSqlError::TransactionError | 3 | Transaction failed error. |
QSqlError::UnknownError | 4 | Unknown error. |
Constructs an error containing the driver error text driverText, the database-specific error text databaseText, the type type and the optional error number number.
Creates a copy of other.
Destroys the object and frees any allocated resources.
Returns the text of the error as reported by the database. This may contain database-specific descriptions; it may be empty.
See also setDatabaseText(), driverText(), and text().
Returns the text of the error as reported by the driver. This may contain database-specific descriptions. It may also be empty.
See also setDriverText(), databaseText(), and text().
Returns true if an error is set, otherwise false.
Example:
QSqlQueryModel model; model.setQuery("select * from myTable"); if (model.lastError().isValid()) qDebug() << model.lastError();
See also type().
Returns the database-specific error number, or -1 if it cannot be determined.
See also setNumber().
Sets the database error text to the value of databaseText.
See also databaseText(), setDriverText(), and text().
Sets the driver error text to the value of driverText.
See also driverText(), setDatabaseText(), and text().
Sets the database-specific error number to number.
See also number().
Sets the error type to the value of type.
See also type().
This is a convenience function that returns databaseText() and driverText() concatenated into a single string.
See also driverText() and databaseText().
Returns the error type, or -1 if the type cannot be determined.
See also setType().
Assigns the other error's values to this error.
Cette page est une traduction d'une page de la documentation de Qt, écrite par Nokia Corporation and/or its subsidiary(-ies). Les éventuels problèmes résultant d'une mauvaise traduction ne sont pas imputables à Nokia. | Qt 4.6 | |
Copyright © 2012 Developpez LLC. Tous droits réservés Developpez LLC. Aucune reproduction, même partielle, ne peut être faite de ce site et de l'ensemble de son contenu : textes, documents et images sans l'autorisation expresse de Developpez LLC. Sinon, vous encourez selon la loi jusqu'à 3 ans de prison et jusqu'à 300 000 E de dommages et intérêts. Cette page est déposée à la SACD. | ||
Vous avez déniché une erreur ? Un bug ? Une redirection cassée ? Ou tout autre problème, quel qu'il soit ? Ou bien vous désirez participer à ce projet de traduction ? N'hésitez pas à nous contacter ou par MP ! |
Copyright © 2000-2012 - www.developpez.com