src/qt/src/sql/drivers/psql/qsql_psql.h

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/****************************************************************************
**
** Definition of PostgreSQL driver classes
**
** Created : 001103
**
** Copyright (C) 1992-2007 Trolltech ASA.  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 ASA 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.
**
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**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
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**********************************************************************/

#ifndef QSQL_PSQL_H
#define QSQL_PSQL_H

#include <qsqlresult.h>
#include <qsqlfield.h>
#include <qsqldriver.h>
#include <libpq-fe.h>

#ifdef QT_PLUGIN
#define Q_EXPORT_SQLDRIVER_PSQL
#else
#define Q_EXPORT_SQLDRIVER_PSQL Q_EXPORT
#endif

class QPSQLPrivate;
class QPSQLDriver;
class QSqlRecordInfo;

class QPSQLResult : public QSqlResult
{
    friend class QPSQLDriver;
public:
    QPSQLResult( const QPSQLDriver* db, const QPSQLPrivate* p );
    ~QPSQLResult();
    PGresult* result();
protected:
    void                cleanup();
    bool                fetch( int i );
    bool                fetchFirst();
    bool                fetchLast();
    QVariant            data( int i );
    bool                isNull( int field );
    bool                reset ( const QString& query );
    int                 size();
    int                 numRowsAffected();
private:
    int                 currentSize;
    QPSQLPrivate*       d;
};

class Q_EXPORT_SQLDRIVER_PSQL QPSQLDriver : public QSqlDriver
{
Q_OBJECT
public:
    enum Protocol {
        Version6 = 6,
        Version7 = 7,
        Version71 = 8,
        Version73 = 9
    };

    QPSQLDriver( QObject * parent=0, const char * name=0 );
    QPSQLDriver( PGconn * conn, QObject * parent=0, const char * name=0 );
    ~QPSQLDriver();
    bool                hasFeature( DriverFeature f ) const;
    bool                open( const QString & db,
                                const QString & user = QString::null,
                                const QString & password = QString::null,
                                const QString & host = QString::null,
                                int port = -1 );
    void                close();
    QSqlQuery           createQuery() const;
    QStringList         tables( const QString& user ) const;
    QSqlIndex           primaryIndex( const QString& tablename ) const;
    QSqlRecord          record( const QString& tablename ) const;
    QSqlRecord          record( const QSqlQuery& query ) const;
    QSqlRecordInfo      recordInfo( const QString& tablename ) const;
    QSqlRecordInfo      recordInfo( const QSqlQuery& query ) const;

    Protocol            protocol() const { return pro; }
    PGconn*             connection();
    QString             formatValue( const QSqlField* field,
                                     bool trimStrings ) const;
    
    // ### remove me for 4.0
    bool open( const QString& db,
               const QString& user,
               const QString& password,
               const QString& host,
               int port,
               const QString& connOpts );
protected:
    bool                beginTransaction();
    bool                commitTransaction();
    bool                rollbackTransaction();
private:
    void                init();
    Protocol            pro;
    QPSQLPrivate*       d;
};

#endif