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QSqlResult(3qt)						       QSqlResult(3qt)

NAME
       QSqlResult - Abstract interface for accessing data from SQL databases

SYNOPSIS
       #include <qsqlresult.h>

   Public Members
       virtual ~QSqlResult ()

   Protected Members
       QSqlResult ( const QSqlDriver * db )
       int at () const
       QString lastQuery () const
       QSqlError lastError () const
       bool isValid () const
       bool isActive () const
       bool isSelect () const
       bool isForwardOnly () const
       const QSqlDriver * driver () const
       virtual void setAt ( int at )
       virtual void setActive ( bool a )
       virtual void setLastError ( const QSqlError & e )
       virtual void setQuery ( const QString & query )
       virtual void setSelect ( bool s )
       virtual void setForwardOnly ( bool forward )
       virtual QVariant data ( int i ) = 0
       virtual bool isNull ( int i ) = 0
       virtual bool reset ( const QString & query ) = 0
       virtual bool fetch ( int i ) = 0
       virtual bool fetchNext ()
       virtual bool fetchPrev ()
       virtual bool fetchFirst () = 0
       virtual bool fetchLast () = 0
       virtual int size () = 0
       virtual int numRowsAffected () = 0

DESCRIPTION
       The QSqlResult class provides an abstract interface for accessing data
       from SQL databases.

       Normally you would use QSqlQuery instead of QSqlResult since QSqlQuery
       provides a generic wrapper for database-specific implementations of
       QSqlResult.

       See also QSql and Database Classes.

MEMBER FUNCTION DOCUMENTATION
QSqlResult::QSqlResult ( const QSqlDriver * db ) [protected]
       Protected constructor which creates a QSqlResult using database db. The
       object is initialized to an inactive state.

QSqlResult::~QSqlResult () [virtual]
       Destroys the object and frees any allocated resources.

int QSqlResult::at () const [protected]
       Returns the current (zero-based) position of the result.

QVariant QSqlResult::data ( int i ) [pure virtual protected]
       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.

const QSqlDriver * QSqlResult::driver () const [protected]
       Returns the driver associated with the result.

bool QSqlResult::fetch ( int i ) [pure virtual protected]
       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.

bool QSqlResult::fetchFirst () [pure virtual protected]
       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.

bool QSqlResult::fetchLast () [pure virtual protected]
       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.

bool QSqlResult::fetchNext () [virtual protected]
       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.

bool QSqlResult::fetchPrev () [virtual protected]
       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.

bool QSqlResult::isActive () const [protected]
       Returns TRUE if the result has records to be retrieved; otherwise
       returns FALSE.

bool QSqlResult::isForwardOnly () const [protected]
       Returns TRUE if you can only scroll forward through a result set;
       otherwise returns FALSE.

bool QSqlResult::isNull ( int i ) [pure virtual protected]
       Returns TRUE if the field at position i is NULL; otherwise returns
       FALSE.

bool QSqlResult::isSelect () const [protected]
       Returns TRUE if the current result is from a SELECT statement;
       otherwise returns FALSE.

bool QSqlResult::isValid () const [protected]
       Returns TRUE if the result is positioned on a valid record (that is,
       the result is not positioned before the first or after the last
       record); otherwise returns FALSE.

QSqlError QSqlResult::lastError () const [protected]
       Returns the last error associated with the result.

QString QSqlResult::lastQuery () const [protected]
       Returns the current SQL query text, or QString::null if there is none.

int QSqlResult::numRowsAffected () [pure virtual protected]
       Returns the number of rows affected by the last query executed.

bool QSqlResult::reset ( const QString & query ) [pure virtual protected]
       Sets the result to use the SQL statement query for subsequent data
       retrieval. Derived classes must reimplement this function and apply the
       query to the database. This function is called only after the result is
       set to an inactive state and is positioned before the first record of
       the new result. Derived classes should return TRUE if the query was
       successful and ready to be used, or FALSE otherwise.

void QSqlResult::setActive ( bool a ) [virtual protected]
       Protected function provided for derived classes to set the internal
       active state to the value of a.

       See also isActive().

void QSqlResult::setAt ( int at ) [virtual protected]
       Protected function provided for derived classes to set the internal
       (zero-based) result index to at.

       See also at().

void QSqlResult::setForwardOnly ( bool forward ) [virtual protected]
       Sets forward only mode to forward. If forward is TRUE only fetchNext()
       is allowed for navigating the results. Forward only mode needs far less
       memory since results do not have to be cached. forward only mode is off
       by default.

       See also fetchNext().

void QSqlResult::setLastError ( const QSqlError & e ) [virtual protected]
       Protected function provided for derived classes to set the last error
       to the value of e.

       See also lastError().

void QSqlResult::setQuery ( const QString & query ) [virtual protected]
       Sets the current query for the result to query. The result must be
       reset() in order to execute the query on the database.

void QSqlResult::setSelect ( bool s ) [virtual protected]
       Protected function provided for derived classes to indicate whether or
       not the current statement is a SQL SELECT statement. The s parameter
       should be TRUE if the statement is a SELECT statement, or FALSE
       otherwise.

int QSqlResult::size () [pure virtual protected]
       Returns the size of the result or -1 if it cannot be determined.

SEE ALSO
       http://doc.trolltech.com/qsqlresult.html
       http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the
       license file included in the distribution for a complete license
       statement.

AUTHOR
       Generated automatically from the source code.

BUGS
       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to
       help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is
       located at $QTDIR/doc/html and can be read using Qt Assistant or with a
       web browser. This man page is provided as a convenience for those users
       who prefer man pages, although this format is not officially supported
       by Trolltech.

       If you find errors in this manual page, please report them to qt-
       bugs@trolltech.com.  Please include the name of the manual page
       (qsqlresult.3qt) and the Qt version (3.3.8).

Trolltech AS			2 February 2007		       QSqlResult(3qt)
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