/***************************************************************************
 * kexidbparser.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_KEXIDBPARSER_H
#define KROSS_KEXIDB_KEXIDBPARSER_H

#include <tqstring.h>

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

#include <kexidb/drivermanager.h>
#include <kexidb/parser/parser.h>

namespace Kross { namespace KexiDB {

    // Forward declaration.
    class KexiDBConnection;
    class KexiDBTableSchema;
    class KexiDBQuerySchema;

    /**
    * The KexiDBParser could be used to parse SQL-statements.
    *
    * Example (in Python) ;
    * @code
    * # First we need a parser object.
    * parser = connection.parser()
    * # Parse a SQL-statement.
    * parser.parse("SELECT * from table1")
    * # The operation could be e.g. SELECT or INSERT.
    * if parser.operation() == 'Error':
    *     raise parser.errorMsg()
    * # Print some feedback.
    * print "Successfully parsed the SQL-statement %s" % parser.statement()
    * @endcode
    */
    class KexiDBParser : public Kross::Api::Class<KexiDBParser>
    {
        public:
            KexiDBParser(KexiDBConnection* connection, ::KexiDB::Parser* parser);
            virtual ~KexiDBParser();
            virtual const TQString getClassName() const;

        private:

            /** Clears previous results and runs the parser on the SQL statement passed as an argument. */
            bool parse(const TQString& sql);
            /** Clears parsing results. */
            void clear();
            /** Returns the resulting operation. */
            const TQString operation();

            /** Returns the KexiDBTableSchema object on a CREATE TABLE operation. */
            KexiDBTableSchema* table();
            /** Returns the KexiDBQuerySchema object on a SELECT operation. */
            KexiDBQuerySchema* query();
            /** Returns the KexiDBConnection object pointing to the used database connection. */
            KexiDBConnection* connection();
            /** Returns the SQL query statement. */
            const TQString statement();

            /** Returns the type string of the last error. */
            const TQString errorType();
            /** Returns the message of the last error. */
            const TQString errorMsg();
            /** Returns the position where the last error occurred. */
            int errorAt();

        private:
            KexiDBConnection* m_connection;
            ::KexiDB::Parser* m_parser;
    };

}}

#endif