/* Return the number of rows in the result */
	virtual int Rows() = 0;
	
	/* Return the number of columns in the result */
	virtual int Cols() = 0;
	
	/* Get a string name of the column by an index number */
	virtual std::string ColName(int column) = 0;
	
	/* Get an index number for a column from a string name */
	virtual int ColNum(const std::string &column) = 0;
	
	/* Get a string value in a given row and column */
	virtual std::string GetValue(int row, int column) = 0;
	
	/* Return a list of values in a row, this should
	 * increment an internal counter so you can repeatedly
	 * call it until it returns an empty vector.
	 */
	virtual std::vector<std::string> GetRow() = 0;