databaseCommandFactory.h

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/******************************************************************************
** Copyright (c) 1992-2025 MAK Technologies, Inc
** All rights reserved.
******************************************************************************/


#ifndef databaseCommandFactory_H_
#define databaseCommandFactory_H_

#include "vlDatabase.h"
#include <vector>

class DtDatabaseTable;
class DtDatabaseColumn;
class DtString;

class DT_DLL_VLDB DtDatabaseCommandFactory
{
public:   

   enum ConditionOperator
   {
      Equals,
      NotEquals
   };

   enum MergeOperator
   {
      And,
      Or
   };
   DtDatabaseCommandFactory();

   virtual ~DtDatabaseCommandFactory();

   // Request the creation of a database (currently, you must be connected to
   // a master database to perform this operation)
   virtual DtString createDatabase( const DtString& databaseName ) = 0;

   // Request the creation of a database, if it exists (currently, you must be 
   // connected to a master database to perform this operation)
   virtual DtString deleteDatabase( const DtString& dbName ) = 0;
 
   virtual DtString createTable( const DtDatabaseTable& table) = 0;

   virtual DtString deleteTable( const DtDatabaseTable& table) = 0;

   virtual void insertTable( std::vector<DtString>& commands, const DtDatabaseTable& table) = 0;

   virtual DtString updateTable( const DtDatabaseTable& table,
      const std::vector<DtString>& columnsToSet,
      const DtString& whereCondition) = 0;

   virtual DtString createConditionString( const DtDatabaseColumn& column,
      const DtString& columnValue,ConditionOperator anOperator) = 0;

   virtual DtString combineConditionStrings( const DtString& conditionOne, 
      const DtString& conditionTwo, MergeOperator anOperator ) = 0;
   

};

#endif