/***************************************************************************
 * kexidbdriver.h
 * This file is part of the KDE project
 * copyright (C)2004-2005 by Sebastian Sauer (mail@dipe.org)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 * You should have received a copy of the GNU Library General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 ***************************************************************************/

#ifndef KROSS_KEXIDB_KEXIDBDRIVER_H
#define KROSS_KEXIDB_KEXIDBDRIVER_H

#include <tqstring.h>
#include <tqvaluelist.h>
//#include <tqguardedptr.h>

#include <api/object.h>
#include <api/variant.h>
#include <api/list.h>
#include <api/class.h>

#include <kexidb/driver.h>

#include "kexidbconnection.h"
#include "kexidbconnectiondata.h"

namespace Kross { namespace KexiDB {

    /**
     * Drivers are the implementations Kexi uses to access the
     * driver-backends.
     *
     * Example (in Python) ;
     * @code
     * # Import the kexidb module.
     * import krosskexidb
     * # Get the drivermanager.
     * drivermanager = krosskexidb.DriverManager()
     * # Create the driver now.
     * driver = drivermanager.driver("SQLite3")
     * # Check if the driver is valid.
     * if not driver.isValid(): raise "Invalid driver"
     * # Create a connectiondata object.
     * connectiondata = drivermanager.createConnectionData()
     * # Fill the new connectiondata object with what we need to connect.
     * connectiondata.setFileName("/home/user/kexisqlite3file.kexi")
     * # Print the list of connections before.
     * print driver.connectionsList()
     * # Create the connection now.
     * connection = driver.createConnection(connectiondata)
     * # Print the list of connections again. This includes our just created connection now.
     * print driver.connectionsList()
     * @endcode
     */
    class KexiDBDriver : public Kross::Api::Class<KexiDBDriver>
    {
        public:
            KexiDBDriver(::KexiDB::Driver* driver);
            virtual ~KexiDBDriver();
            virtual const TQString getClassName() const;

        private:

            /** Return true if this driver is valid else false. */
            bool isValid();
            /** The drivers major versionnumber. */
            int versionMajor();
            /** The drivers minor versionnumber. */
            int versionMinor();
            /** Driver-specific SQL string escaping. For example the " or ' char may
            need to be escaped for values used within SQL-statements. */
            TQString escapeString(const TQString& s);
            /** Returns true if this driver is file-based. */
            bool isFileDriver();
            /** Return a name of MIME type of files handled by this driver if it is a
            file-based database's driver otherwise returns null string. */
            TQString fileDBDriverMimeType();
            /** Returns true if the passed string is a system object's name, eg. name
            of build-in system table that cannot be used or created by a user. */
            bool isSystemObjectName(const TQString& name);
            /** Returns true if the passed string is a system database's name, eg. name
            of build-in, system database that cannot be used or created by a user. */
            bool isSystemDatabaseName(const TQString& name);
            /** Returns true if the passed string is a system field's name, build-in
            system field that cannot be used or created by a user. */
            bool isSystemFieldName(const TQString& name);
            /** The as second argument passed string got escaped to be usable within
            a SQL-statement and those escaped string got returned by the method.
            The first argument defines the fieldtype to what we should escape the
            second argument to. */
            TQString valueToSQL(const TQString& fieldtype, const TQVariant& value);
            /** Create a new KexiDBConnection object and return it. */
            KexiDBConnection* createConnection(KexiDBConnectionData* data);
            /** Return a list of KexiDBConnection objects. */
            TQPtrList< ::KexiDB::Connection > connectionsList();

        private:
            ::KexiDB::Driver* m_driver;
    };

}}

#endif