#include <qsqlnulldriver_p.h>

Inheritance diagram for QSqlNullDriver:

Public Functions
void	close ()
	Derived classes must reimplement this pure virtual function in order to close the database connection. More...

QSqlResult *	createResult () const
	Creates an empty SQL result on the database. More...

bool	hasFeature (DriverFeature) const
	Returns true if the driver supports feature feature; otherwise returns false. More...

bool	open (const QString &, const QString &, const QString &, const QString &, int, const QString &)
	Derived classes must reimplement this pure virtual function to open a database connection on database db, using user name user, password password, host host, port port and connection options options. More...

	QSqlNullDriver ()

Public Functions inherited from QSqlDriver
virtual bool	beginTransaction ()
	This function is called to begin a transaction. More...

virtual bool	commitTransaction ()
	This function is called to commit a transaction. More...

virtual QString	escapeIdentifier (const QString &identifier, IdentifierType type) const
	Returns the identifier escaped according to the database rules. More...

virtual QString	formatValue (const QSqlField &field, bool trimStrings=false) const
	Returns a string representation of the field value for the database. More...

virtual QVariant	handle () const
	Returns the low-level database handle wrapped in a QVariant or an invalid variant if there is no handle. More...

bool	isIdentifierEscaped (const QString &identifier, IdentifierType type) const
	Returns whether identifier is escaped according to the database rules. More...

virtual bool	isOpen () const
	Returns true if the database connection is open; otherwise returns false. More...

bool	isOpenError () const
	Returns true if the there was an error opening the database connection; otherwise returns false. More...

QSqlError	lastError () const
	Returns a QSqlError object which contains information about the last error that occurred on the database. More...

QSql::NumericalPrecisionPolicy	numericalPrecisionPolicy () const
	Returns the current default precision policy for the database connection. More...

virtual QSqlIndex	primaryIndex (const QString &tableName) const
	Returns the primary index for table tableName. More...

	QSqlDriver (QObject *parent=0)
	Constructs a new driver with the given parent. More...

virtual QSqlRecord	record (const QString &tableName) const
	Returns a QSqlRecord populated with the names of the fields in table tableName. More...

virtual bool	rollbackTransaction ()
	This function is called to rollback a transaction. More...

void	setNumericalPrecisionPolicy (QSql::NumericalPrecisionPolicy precisionPolicy)
	Sets the default numerical precision policy used by queries created by this driver to precisionPolicy. More...

virtual QString	sqlStatement (StatementType type, const QString &tableName, const QSqlRecord &rec, bool preparedStatement) const
	Returns a SQL statement of type type for the table tableName with the values from rec. More...

QString	stripDelimiters (const QString &identifier, IdentifierType type) const
	Returns the identifier with the leading and trailing delimiters removed, identifier can either be a table name or field name, dependent on type. More...

QStringList	subscribedToNotifications () const
	Returns a list of the names of the event notifications that are currently subscribed to. More...

bool	subscribeToNotification (const QString &name)
	This function is called to subscribe to event notifications from the database. More...

virtual QStringList	tables (QSql::TableType tableType) const
	Returns a list of the names of the tables in the database. More...

bool	unsubscribeFromNotification (const QString &name)
	This function is called to unsubscribe from event notifications from the database. More...

	~QSqlDriver ()
	Destroys the object and frees any allocated resources. More...

Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...

const QObjectList &	children () const
	Returns a list of child objects. More...

bool	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=0, const QObject receiver=0, const char *member=0)

bool	disconnect (const QObject receiver, const char member=0)

void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...

void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...

QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...

virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...

virtual bool	eventFilter (QObject , QEvent )
	Filters events if this object has been installed as an event filter for the watched object. More...

template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...

template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...

template<typename T >
QList< T >	findChildren (const QRegExp &re) const

bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...

void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...

bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...

void	killTimer (int id)
	Kills the timer with timer identifier, id. More...

virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...

QString	objectName () const

QObject *	parent () const
	Returns a pointer to the parent object. More...

QVariant	property (const char *name) const
	Returns the value of the object's name property. More...

Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...

void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...

void	setObjectName (const QString &name)

void	setParent (QObject *)
	Makes the object a child of parent. More...

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...

void	setUserData (uint id, QObjectUserData *data)

bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...

int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...

QThread *	thread () const
	Returns the thread in which the object lives. More...

QObjectUserData *	userData (uint id) const

virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Protected Functions
void	setLastError (const QSqlError &)
	This function is used to set the value of the last error, error, that occurred on the database. More...

void	setOpen (bool)
	This function sets the open state of the database to open. More...

void	setOpenError (bool)
	This function sets the open error state of the database to error. More...

Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...

virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...

virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...

virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...

	QObject (QObjectPrivate &dd, QObject *parent=0)

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...

QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...

Additional Inherited Members
Public Types inherited from QSqlDriver
enum	DriverFeature { Transactions, QuerySize, BLOB, Unicode, PreparedQueries, NamedPlaceholders, PositionalPlaceholders, LastInsertId, BatchOperations, SimpleLocking, LowPrecisionNumbers, EventNotifications, FinishQuery, MultipleResultSets }
	This enum contains a list of features a driver might support. More...

enum	IdentifierType { FieldName, TableName }
	This enum contains a list of SQL identifier types. More...

enum	StatementType { WhereStatement, SelectStatement, UpdateStatement, InsertStatement, DeleteStatement }
	This enum contains a list of SQL statement (or clause) types the driver can create. More...

Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

Signals inherited from QSqlDriver
void	notification (const QString &name)
	This signal is emitted when the database posts an event notification that the driver subscribes to. More...

Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...

Static Public Functions inherited from QObject
static bool	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...

static bool	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	Disconnects signal in object sender from method in object receiver. More...

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static uint	registerUserData ()

static QString	tr (const char sourceText, const char comment=0, int n=-1)

static QString	trUtf8 (const char sourceText, const char comment=0, int n=-1)

Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...

Protected Slots inherited from QSqlDriver
bool	isIdentifierEscapedImplementation (const QString &identifier, IdentifierType type) const
	This slot returns whether identifier is escaped according to the database rules. More...

QString	stripDelimitersImplementation (const QString &identifier, IdentifierType type) const
	This slot returns identifier with the leading and trailing delimiters removed, identifier can either be a tablename or field name, dependent on type. More...

QStringList	subscribedToNotificationsImplementation () const
	Returns a list of the names of the event notifications that are currently subscribed to. More...

bool	subscribeToNotificationImplementation (const QString &name)
	This slot is called to subscribe to event notifications from the database. More...

bool	unsubscribeFromNotificationImplementation (const QString &name)
	This slot is called to unsubscribe from event notifications from the database. More...

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject

Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()

T *	qobject_cast (QObject *object)

	QObjectList

void *	qt_find_obj_child (QObject parent, const char type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 93 of file qsqlnulldriver_p.h.

Constructors and Destructors

◆ QSqlNullDriver()

QSqlNullDriver::QSqlNullDriver ( )

inline

Definition at line 96 of file qsqlnulldriver_p.h.

                            : QSqlDriver()
     { QSqlDriver::setLastError(
             QSqlError(QLatin1String("Driver not loaded"), QLatin1String("Driver not loaded"), QSqlError::ConnectionError)); }

Functions

◆ close()

void QSqlNullDriver::close ( )

inlinevirtual

Derived classes must reimplement this pure virtual function in order to close the database connection.

Return true on success, false on failure.

See also: open(), setOpen()

Implements QSqlDriver.

Definition at line 103 of file qsqlnulldriver_p.h.

103 {}

◆ createResult()

QSqlResult* QSqlNullDriver::createResult ( ) const

inlinevirtual

Creates an empty SQL result on the database.

Derived classes must reimplement this function and return a QSqlResult object appropriate for their database to the caller.

Implements QSqlDriver.

Definition at line 104 of file qsqlnulldriver_p.h.

104 { return new QSqlNullResult(this); }

QSqlNullResult

Definition: qsqlnulldriver_p.h:63

◆ hasFeature()

bool QSqlNullDriver::hasFeature ( DriverFeature feature ) const

inlinevirtual

Returns true if the driver supports feature feature; otherwise returns false.

Note that some databases need to be open() before this can be determined.

See also: DriverFeature

Implements QSqlDriver.

Definition at line 99 of file qsqlnulldriver_p.h.

99 { return false; }

◆ open()

bool QSqlNullDriver::open	(	const QString &	db,
		const QString &	user,
		const QString &	password,
		const QString &	host,
		int	port,
		const QString &	options
	)

inlinevirtual

Derived classes must reimplement this pure virtual function to open a database connection on database db, using user name user, password password, host host, port port and connection options options.

The function must return true on success and false on failure.

See also: setOpen()

Implements QSqlDriver.

Definition at line 100 of file qsqlnulldriver_p.h.

102 { return false; }

◆ setLastError()

void QSqlNullDriver::setLastError ( const QSqlError & error )

inlineprotectedvirtual

This function is used to set the value of the last error, error, that occurred on the database.

See also: lastError()

Reimplemented from QSqlDriver.

Definition at line 109 of file qsqlnulldriver_p.h.

109 {}

◆ setOpen()

void QSqlNullDriver::setOpen ( bool open )

inlineprotectedvirtual

This function sets the open state of the database to open.

Derived classes can use this function to report the status of open().

See also: open(), setOpenError()

Reimplemented from QSqlDriver.

Definition at line 107 of file qsqlnulldriver_p.h.

107 {}

◆ setOpenError()

void QSqlNullDriver::setOpenError ( bool error )

inlineprotectedvirtual

This function sets the open error state of the database to error.

Derived classes can use this function to report the status of open(). Note that if error is true the open state of the database is set to closed (i.e., isOpen() returns false).

See also: open(), setOpen()

Reimplemented from QSqlDriver.

Definition at line 108 of file qsqlnulldriver_p.h.

108 {}

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

/src/sql/kernel/qsqlnulldriver_p.h

Public Functions

Protected Functions

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QSqlNullDriver()

Functions

◆ close()

◆ createResult()

◆ hasFeature()

◆ open()

◆ setLastError()

◆ setOpen()

◆ setOpenError()