/home/tobi/workspace/solarpowerlog/src/interfaces/PersistanceStorage/IPersistanceStorage.h

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/*
 * IPersistanceStorage.h
 *
 *  Created on: Jan 18, 2010
 *      Author: tobi
 */

#ifndef IPERSISTANCESTORAGE_H_
#define IPERSISTANCESTORAGE_H_

#include <dbixx/dbixx.h>

#include <map>
#include <vector>
#include <boost/any.hpp>

enum dbtypes
{
     db_integer,
     db_unsignedinteger,
     db_longlong,
     db_unsignedlonglong,
     db_string,
     db_decimal,
     db_tm
};

class IPersistanceStorage
{
public:
     IPersistanceStorage(std::string &configname, std::string &table);
     virtual ~IPersistanceStorage();

     // Let the persitance model know what you are expecting as a type for a
     // given field. Note: By default, it is a std::string....
     // the tablespec can be submitted to the queryhelper.
     virtual void SetColumnTypes(std::map<std::string, dbtypes> type)
     {
          table_spec = type;
     }
     ;

     const std::map<std::string, dbtypes> *GetColumnTypes(void) const {

          return &table_spec;
     }

     // Check if table exists and if necessary create it.
     // If the table exists, check if all columns are there
     // and one is missing alter the table to add the columns.
     virtual void CheckAndCreateTable(void);

private:
     std::string config;
     std::string table;

     dbixx::session session;

     // map for the table spec to assign the values the right types-
     std::map<std::string /*identifier*/, dbtypes /*type*/> table_spec;

     // Has the session been opened?
     bool session_ready;
     std::string dbname;

};

#endif /* IPERSISTANCESTORAGE_H_ */