/* This file is part of the KDE project
   Copyright (C) 2004 Lucijan Busch <lucijan@kde.org>

   This library 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 library 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 library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#ifndef KEXIPARTDATASOURCE_H
#define KEXIPARTDATASOURCE_H

class KexiProject;
namespace KexiDB
{
	class FieldList;
	class Cursor;
}

namespace KexiPart
{
	class DataSourcePrivate;
	class Item;
	class Part;
	
/**
 * this class provides a datasource framework for e.g. tables and queries
 * using this framework one can query for
 *  - a list of datasources
 *  - the fileds in datasources
 *  - variables (e.g. query variables)
 */
class KEXICORE_EXPORT DataSource
{
	public:
		DataSource(Part *part);
		virtual ~DataSource();

		/**
		 * @returns a list of fileds for the datasource
		 * @arg id is the document id for the source
		 */
		virtual KexiDB::FieldList *fields(KexiProject *project, const KexiPart::Item &i)=0;

		/**
		 * @returns the cursor
		 */
		virtual KexiDB::Cursor *cursor(KexiProject *project, const KexiPart::Item &i, bool buffer)=0;

		/**
		 * @returns the part providing this datasource
		 */
		Part *part() const;

	private:
		DataSourcePrivate *d;
};

}

#endif