Referencia de la Clase QtSqlCachedResult

#include <qsqlcachedresult.h>

Diagrama de herencias de QtSqlCachedResult

Lista de todos los miembros.

Tipos públicos
typedef QValueVector< QVariant >	RowCache
typedef QPtrVector< RowCache >	RowsetCache
Métodos públicos
virtual	~QtSqlCachedResult ()
Métodos protegidos
	QtSqlCachedResult (const QSqlDriver *db)
void	init (int colCount)
void	cleanup ()
bool	cacheNext ()
virtual bool	gotoNext (RowCache *row)=0
QVariant	data (int i)
bool	isNull (int i)
bool	fetch (int i)
bool	fetchNext ()
bool	fetchPrev ()
bool	fetchFirst ()
bool	fetchLast ()
int	colCount () const

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Documentación de los 'Typedef' miembros de la clase

typedef QValueVector<QVariant> QtSqlCachedResult::RowCache

typedef QPtrVector<RowCache> QtSqlCachedResult::RowsetCache

---

Documentación del constructor y destructor

QtSqlCachedResult::~QtSqlCachedResult

(

)

[virtual]

QtSqlCachedResult::QtSqlCachedResult

(

const QSqlDriver *

db

)

[protected]

---

Documentación de las funciones miembro

bool QtSqlCachedResult::cacheNext

(

)

[protected]

void QtSqlCachedResult::cleanup

(

)

[protected]

int QtSqlCachedResult::colCount

(

)

const [protected]

QVariant QtSqlCachedResult::data

(

int

i

)

[protected, virtual]

Returns the data for field i (zero-based) as a QVariant. This function is only called if the result is in an active state and is positioned on a valid record and i is non-negative. Derived classes must reimplement this function and return the value of field i, or QVariant() if it cannot be determined.

Implementa QSqlResult.

bool QtSqlCachedResult::fetch

(

int

i

)

[protected, virtual]

Positions the result to an arbitrary (zero-based) index i. This function is only called if the result is in an active state. Derived classes must reimplement this function and position the result to the index i, and call setAt() with an appropriate value. Return TRUE to indicate success, or FALSE to signify failure.

Implementa QSqlResult.

bool QtSqlCachedResult::fetchFirst

(

)

[protected, virtual]

Positions the result to the first record in the result. This function is only called if the result is in an active state. Derived classes must reimplement this function and position the result to the first record, and call setAt() with an appropriate value. Return TRUE to indicate success, or FALSE to signify failure.

Implementa QSqlResult.

bool QtSqlCachedResult::fetchLast

(

)

[protected, virtual]

Positions the result to the last record in the result. This function is only called if the result is in an active state. Derived classes must reimplement this function and position the result to the last record, and call setAt() with an appropriate value. Return TRUE to indicate success, or FALSE to signify failure.

Implementa QSqlResult.

bool QtSqlCachedResult::fetchNext

(

)

[protected, virtual]

Positions the result to the next available record in the result. This function is only called if the result is in an active state. The default implementation calls fetch() with the next index. Derived classes can reimplement this function and position the result to the next record in some other way, and call setAt() with an appropriate value. Return TRUE to indicate success, or FALSE to signify failure.

Reimplementado de QSqlResult.

bool QtSqlCachedResult::fetchPrev

(

)

[protected, virtual]

Positions the result to the previous available record in the result. This function is only called if the result is in an active state. The default implementation calls fetch() with the previous index. Derived classes can reimplement this function and position the result to the next record in some other way, and call setAt() with an appropriate value. Return TRUE to indicate success, or FALSE to signify failure.

Reimplementado de QSqlResult.

virtual bool QtSqlCachedResult::gotoNext

(

RowCache *

row

)

[protected, pure virtual]

Implementado en QIBaseResult y QSQLiteResult.

void QtSqlCachedResult::init

(

int

colCount

)

[protected]

bool QtSqlCachedResult::isNull

(

int

i

)

[protected, virtual]

Returns TRUE if the field at position i is NULL; otherwise returns FALSE.

Implementa QSqlResult.

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La documentación para esta clase fue generada a partir de los siguientes ficheros:

• src/qt/src/sql/drivers/cache/qsqlcachedresult.h
• src/qt/src/sql/drivers/cache/qsqlcachedresult.cpp