public string[] ParseLine(string line, int lineIndex)
{
string[] dataArray = line.Split(",", StringSplitOptions.RemoveEmptyEntries);
if (dataArray == null || dataArray.Length < 3)
{
string problemString = String.Format(ProblemTextPrefix, lineIndex + 1);
FailedImportsInfo.Add(problemString + "Malformed data input");
return(null);
}
return(dataArray);
}
public StudentSubject ParseLineData(string[] dataArray, int lineIndex)
{
if (Api == null)
{
throw new Exception("Api must be set");
}
long studentId = long.Parse(dataArray[0].Trim());
long subjectId = long.Parse(dataArray[1].Trim());
int score = Int32.Parse(dataArray[2].Trim());
bool isValidStudentId = Api.StudentExists(studentId);
bool isValidSubjectId = Api.SubjectExists(subjectId);
StudentSubject existingStudentSubject = Api.GetStudentSubject(studentId, subjectId);
string problemString = String.Format(ProblemTextPrefix, lineIndex + 1);
if (!isValidStudentId || !isValidSubjectId)
{
if (!isValidStudentId)
{
problemString += "No student with id " + studentId + ".";
}
if (!isValidSubjectId)
{
problemString += "No subject with id " + subjectId + ".";
}
FailedImportsInfo.Add(problemString);
}
else
{
if (existingStudentSubject == null)
{
problemString += "Student with id " + studentId + " is not enrolled in class with id " + subjectId;
FailedImportsInfo.Add(problemString);
}
else
{
existingStudentSubject = Api.SaveStudentSubjectScore(studentId, subjectId, score);
SuccessfulImportsCount++;
}
}
return(existingStudentSubject);
}