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# ntqsqldriver.h

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

    /****************************************************************************
    **
    ** Definition of TQSqlDriver class
    **
    ** Created : 2000-11-03
    **
    ** Copyright (C) 2005-2007 Trolltech ASA.  All rights reserved.
    **
    ** This file is part of the sql module of the TQt GUI Toolkit.
    **
    ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file. Alternatively you may (at your option) use any
    ** later version of the GNU General Public License if such license has
    ** been publicly approved by Trolltech ASA (or its successors, if any)
    ** and the KDE Free TQt Foundation.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/.
    ** If you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** This file may be used under the terms of the Q Public License as
    ** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
    ** included in the packaging of this file.  Licensees holding valid TQt
    ** Commercial licenses may use this file in accordance with the TQt
    ** Commercial License Agreement provided with the Software.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
    ** herein.
    **
    **********************************************************************/

    #ifndef TQSQLDRIVER_H
    #define TQSQLDRIVER_H

    #ifndef QT_H
    #include "ntqobject.h"
    #include "ntqptrdict.h"
    #include "ntqstring.h"
    #include "ntqsqlerror.h"
    #include "ntqsqlquery.h"
    #include "ntqsqlfield.h"
    #include "ntqsqlindex.h"
    #include "ntqstringlist.h"
    #include "ntqmap.h"
    #endif // QT_H

    #if !defined( TQT_MODULE_SQL ) || defined( QT_LICENSE_PROFESSIONAL )
    #define TQM_EXPORT_SQL
    #else
    #define TQM_EXPORT_SQL TQ_EXPORT
    #endif

    #ifndef TQT_NO_SQL

    class TQSqlDriverExtension;

    class TQSqlDatabase;

    class TQM_EXPORT_SQL TQSqlDriver : public TQObject
    {
        friend class TQSqlDatabase;
        TQ_OBJECT
    public:
        enum DriverFeature { Transactions, QuerySize, BLOB, Unicode, PreparedQueries,
    			 NamedPlaceholders, PositionalPlaceholders };

        TQSqlDriver( TQObject * parent=0, const char * name=0 );
        ~TQSqlDriver();
        bool			isOpen() const;
        bool			isOpenError() const;

        virtual bool		beginTransaction();
        virtual bool		commitTransaction();
        virtual bool		rollbackTransaction();
        virtual TQStringList		tables( const TQString& tableType ) const;
        virtual TQSqlIndex		primaryIndex( const TQString& tableName ) const;
        virtual TQSqlRecord		record( const TQString& tableName ) const;
        virtual TQSqlRecord		record( const TQSqlQuery& query ) const;
        virtual TQSqlRecordInfo	recordInfo( const TQString& tablename ) const;
        virtual TQSqlRecordInfo	recordInfo( const TQSqlQuery& query ) const;
        virtual TQString		nullText() const;
        virtual TQString		formatValue( const TQSqlField* field, bool trimStrings = FALSE ) const;
        TQSqlError			lastError() const;

        virtual bool		hasFeature( DriverFeature f ) const = 0;
        virtual bool		open( const TQString & db,
    				      const TQString & user = TQString::null,
    				      const TQString & password = TQString::null,
    				      const TQString & host = TQString::null,
    				      int port = -1 ) = 0;
        virtual void		close() = 0;
        virtual TQSqlQuery		createQuery() const = 0;

        // ### remove for 4.0
        bool			open( const TQString& db,
    				      const TQString& user,
    				      const TQString& password,
    				      const TQString& host,
    				      int port,
    				      const TQString& connOpts );
    protected:
        virtual void		setOpen( bool o );
        virtual void		setOpenError( bool e );
        virtual void		setLastError( const TQSqlError& e );
    private:
        // ### This class needs a d-pointer in 4.0.
        int		          dbState;
        TQSqlError	          error;
    #if defined(TQ_DISABLE_COPY)
        TQSqlDriver( const TQSqlDriver & );
        TQSqlDriver &operator=( const TQSqlDriver & );
    #endif
    };

    #endif	// TQT_NO_SQL
    #endif