public String generateInsertStmt(TransactionSet transactionSet) {
		//code to convert transactionSet object to SQL insert statement string for that transactionSet
		//System.out.println("Generating Insert Statement for transactionSet");
		String result = null;
		String start = transactionSet.getStart_date();
		String end = transactionSet.getEnd_date();
		String startDateTime ="";
		String endDateTime = "";
		
		if(transactionSet.getTimestamp()==null){
			transactionSet.setTimestamp();
		}
		
		if(start == null && end == null){
			transactionSet.setTimestamp();
			String defaultTimeStamp = transactionSet.getTimestamp();
			startDateTime = defaultTimeStamp;
			endDateTime = defaultTimeStamp;
		}else{
			startDateTime = start;//think about how to get default time here and fileUtitities
			endDateTime = end;
		}
		String convert_start_date = "STR_TO_DATE(\""+startDateTime+"\", \"%Y-%m-%d %H:%i:%S\")";
		String convert_end_date = "STR_TO_DATE(\""+endDateTime+"\", \"%Y-%m-%d %H:%i:%S\")";
		String insert= "INSERT INTO TransactionSet (TransactionSet_start_datetime, TransactionSet_end_datetime) VALUES(" + convert_start_date +", " +convert_end_date+")";
		result = insert;
		//System.out.println("result: " + result);
		//System.out.println("Finished Insert Statement for transactionSet");
		return result;
	}