qsqlcursor.h Include File

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# qsqlcursor.h

This is the verbatim text of the qsqlcursor.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    **
    ** Definition of QSqlCursor class
    **
    ** Created : 2000-11-03
    **
    ** Copyright (C) 2005 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the sql module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition licenses may use this
    ** file in accordance with the Qt Commercial License Agreement provided
    ** with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QSQLCURSOR_H
    #define QSQLCURSOR_H

    #ifndef QT_H
    #include "qsqlrecord.h"
    #include "qstringlist.h"
    #include "qsqlquery.h"
    #include "qsqlindex.h"
    #endif // QT_H

    #if !defined( QT_MODULE_SQL ) || defined( QT_LICENSE_PROFESSIONAL )
    #define QM_EXPORT_SQL
    #else
    #define QM_EXPORT_SQL Q_EXPORT
    #endif

    #ifndef QT_NO_SQL

    class QSqlDatabase;
    class QSqlCursorPrivate;

    class QM_EXPORT_SQL QSqlCursor : public QSqlRecord, public QSqlQuery
    {
    public:
        QSqlCursor( const QString & name = QString::null, bool autopopulate = TRUE, QSqlDatabase* db = 0 );
        QSqlCursor( const QSqlCursor & other );
        QSqlCursor& operator=( const QSqlCursor& other );
        ~QSqlCursor();

        enum Mode {
    	ReadOnly = 0,
    	Insert = 1,
    	Update = 2,
    	Delete = 4,
    	Writable = 7
        };

        QVariant		value( int i ) const;
        QVariant		value( const QString& name ) const;
        void         	setValue( int i, const QVariant& val );
        void         	setValue( const QString& name, const QVariant& val );
        virtual QSqlIndex	primaryIndex( bool prime = TRUE ) const;
        virtual QSqlIndex	index( const QStringList& fieldNames ) const;
        QSqlIndex		index( const QString& fieldName ) const;
        QSqlIndex		index( const char* fieldName ) const;
        virtual void	setPrimaryIndex( const QSqlIndex& idx );

        virtual void	append( const QSqlFieldInfo& fieldInfo );
        virtual void	insert( int pos, const QSqlFieldInfo& fieldInfo );
        void		remove( int pos );
        void		clear();
        void		setGenerated( const QString& name, bool generated );
        void		setGenerated( int i, bool generated );

        virtual QSqlRecord*	editBuffer( bool copy = FALSE );
        virtual QSqlRecord*	primeInsert();
        virtual QSqlRecord*	primeUpdate();
        virtual QSqlRecord*	primeDelete();
        virtual int		insert( bool invalidate = TRUE );
        virtual int		update( bool invalidate = TRUE );
        virtual int		del( bool invalidate = TRUE );

        virtual void	setMode( int flags );
        int			mode() const;
        virtual void	setCalculated( const QString& name, bool calculated );
        bool		isCalculated( const QString& name ) const;
        virtual void	setTrimmed( const QString& name, bool trim );
        bool		isTrimmed( const QString& name ) const;

        bool		isReadOnly() const;
        bool		canInsert() const;
        bool		canUpdate() const;
        bool		canDelete() const;

        bool		select();
        bool		select( const QSqlIndex& sort );
        bool		select( const QSqlIndex & filter, const QSqlIndex & sort );
        virtual bool	select( const QString & filter, const QSqlIndex & sort = QSqlIndex() );

        virtual void	setSort( const QSqlIndex& sort );
        QSqlIndex		sort() const;
        virtual void	setFilter( const QString& filter );
        QString		filter() const;
        virtual void	setName( const QString& name, bool autopopulate = TRUE );
        QString		name() const;
        QString		toString( const QString& prefix = QString::null,
    				const QString& sep = "," ) const;
        bool 		isNull( int i ) const;
        bool 		isNull( const QString& name ) const;

    protected:
        void		afterSeek();
        bool		exec( const QString & sql );

        virtual QVariant	calculateField( const QString& name );
        virtual int		update( const QString & filter, bool invalidate = TRUE );
        virtual int		del( const QString & filter, bool invalidate = TRUE );

        virtual QString	toString( const QString& prefix, QSqlField* field, const QString& fieldSep ) const;
        virtual QString	toString( QSqlRecord* rec, const QString& prefix, const QString& fieldSep,
    				const QString& sep ) const;
        virtual QString	toString( const QSqlIndex& i, QSqlRecord* rec, const QString& prefix,
    				const QString& fieldSep, const QString& sep ) const;

    private:
        void		sync();
        int			apply( const QString& q, bool invalidate );
        int			applyPrepared( const QString& q, bool invalidate );
        QSqlRecord&		operator=( const QSqlRecord & list );
        void 		append( const QSqlField& field );
        void 		insert( int pos, const QSqlField& field );

        QSqlCursorPrivate*	d;
    };

    #endif	// QT_NO_SQL
    #endif