qsqlquery.h Include File

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# qsqlquery.h

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

    /****************************************************************************
    **
    ** Definition of QSqlQuery class
    **
    ** Created : 2000-11-03
    **
    ** Copyright (C) 2000 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 QSQLQUERY_H
    #define QSQLQUERY_H

    #ifndef QT_H
    #include "qobject.h"
    #include "qstring.h"
    #include "qvariant.h"
    #include "qvaluelist.h"
    #include "qsqlerror.h"
    #include "qsqlfield.h"
    #include "qsql.h"
    #endif // QT_H

    #ifndef QT_NO_SQL

    class QSqlDriver;
    class QSqlResult;
    class QSqlResultInfo;
    class QSqlDatabase;

    class Q_EXPORT QSqlResultShared : public QObject, public QShared
    {
        Q_OBJECT
    public:
        QSqlResultShared( QSqlResult* result );
        virtual ~QSqlResultShared();
        QSqlResult* sqlResult;
        QString executedQuery;
    private slots:
        void slotResultDestroyed();
    };

    class Q_EXPORT QSqlQuery
    {
    public:
        QSqlQuery( QSqlResult * r );
        QSqlQuery( const QString& query = QString::null, QSqlDatabase* db = 0 );
        Q_EXPLICIT QSqlQuery( QSqlDatabase* db );
        QSqlQuery( const QSqlQuery& other );
        QSqlQuery& operator=( const QSqlQuery& other );
        virtual ~QSqlQuery();

        bool                isValid() const;
        bool                isActive() const;
        bool	        isNull( int field ) const;
        int                 at() const;
        QString             lastQuery() const;
        int                 numRowsAffected() const;
        QSqlError	        lastError() const;
        bool                isSelect() const;
        int                 size() const;
        const QSqlDriver*   driver() const;
        const QSqlResult*   result() const;
        bool		isForwardOnly() const;
        void		setForwardOnly( bool forward );

        virtual bool	exec ( const QString& query );
        virtual QVariant    value( int i ) const;

        virtual bool	seek( int i, bool relative = FALSE );
        virtual bool        next();
        virtual bool        prev();
        virtual bool        first();
        virtual bool        last();

        // prepared query support
        bool		exec();
        bool		prepare( const QString& query );
        void		bindValue( const QString& placeholder, const QVariant& val );
        void		bindValue( int pos, const QVariant& val );
        void		addBindValue( const QVariant& val );
        // remove these overloads in 4.0
        void		bindValue( const QString& placeholder, const QVariant& val, QSql::ParameterType type );
        void		bindValue( int pos, const QVariant& val, QSql::ParameterType type );
        void		addBindValue( const QVariant& val, QSql::ParameterType type );
        QVariant		boundValue( const QString& placeholder ) const;
        QVariant		boundValue( int pos ) const;
        QMap<QString, QVariant> boundValues() const;
        QString             executedQuery() const;

    protected:
        virtual void        beforeSeek();
        virtual void        afterSeek();

    private:
        void 		init( const QString& query, QSqlDatabase* db );
        void                deref();
        bool                checkDetach();
        QSqlResultShared*   d;
    };

    #endif // QT_NO_SQL
    #endif