/// <summary>
/// Takes a line of text and converts into domain object T
/// </summary>
/// <param name="lineOfRecordFromCsv">line of text from csv file</param>
/// <param name="convertedObj">Converted domain object</param>
/// <returns></returns>
internal bool ConvertCsvRecordToObject(string lineOfRecordFromCsv, out T convertedObj)
{
_csvHeaderAndData.Clear();
string[] columnData = SplitLineOfTextIntoCsv.Split(lineOfRecordFromCsv);
for (ushort i = 0; i <= HeaderColumnNamesInCsvFile.Count; i++)
{
if (i < HeaderColumnNamesInCsvFile.Count && i < columnData.Length)
{
_csvHeaderAndData.Add(HeaderColumnNamesInCsvFile[i], columnData[i]);
}
}
if (_ignoreColumnCountMismatch == false && columnData.Length != HeaderColumnNamesInCsvFile.Count)
{
AddError(ErrorCodes.ColumnCountMismatch, $"Number of columns present in CSV doesn't matches with expected mapper. Count of columns present in CSV={HeaderColumnNamesInCsvFile.Count}, No of columns in mapper:{columnData.Length} ");
convertedObj = default(T);
return(false);
}
T domainObj = (T)Activator.CreateInstance(typeof(T));
PropertyInfo[] properties = domainObj.GetType().GetProperties();
foreach (PropertyInfo property in properties)
{
//Get Each property name from list of properties
if (this._mapper.ObjectToCsvMapping.ContainsKey(property.Name)) //Ignore the object properties if no mapping proeprties passed
{
ICsvToObjectMap <T> map = this._mapper.ObjectToCsvMapping[property.Name];
string csvColumnNameFromMap = map.CsvColumnName;
string columnValue = _csvHeaderAndData[csvColumnNameFromMap];
try
{
property.SetValue(domainObj, Convert.ChangeType(columnValue, property.PropertyType), null);
}
catch (Exception ex
) //Handle data conversion failure(if csv data is not compatible with object datatype)
{
_logger.LogError($"{ex.Message}\n{ex.StackTrace}");
convertedObj = default(T);
this.ExtractFailedRows.Add(lineOfRecordFromCsv);
var error =
$"Cannot Convert data '{columnValue}' for Column name {csvColumnNameFromMap}, column data type {property.PropertyType.Name} in file {_pathToCsv}";
AddError(ErrorCodes.DataConversionError, error
);
if (!this._ignoreDataConversionError)
{
throw new CsvReadWriteException(error, ErrorCodes.DataConversionError);
}
return(false);
}
}
}
convertedObj = domainObj;
return(true);
}
/// <summary>
/// Runs series of pre validations on the given CSV file before starting extracting data
/// </summary>
/// <param name="pathToCsv">Path to .csv/other allowed extension file</param>
private bool PreExtractValidation(string pathToCsv)
{
if (pathToCsv == null && _csvContentLines.Length == 0)
{
AddError(ErrorCodes.NullPath, "Please supply the file content or provide the path to the file in constructor argument");
return(false);
}
else if (!string.IsNullOrEmpty(pathToCsv) && !_fileService.FileExists(pathToCsv))
{
AddError(ErrorCodes.PathNotExists, $"{pathToCsv} does not exists");
return(false);
}
else if (!string.IsNullOrEmpty(pathToCsv) && _fileService.PathGetExtension(pathToCsv).ToUpper() != ".CSV")
{
AddError(ErrorCodes.InvalidFileExtension, $"Invalid file extension {_fileService.PathGetExtension(pathToCsv)}. Only .csv is supported ");
return(false);
}
try
{
if (_csvContentLines.Length == 0)
{
_csvContentLines = _fileService.ReadAllLines(pathToCsv);
}
}
catch (Exception ex)
{
AddError(ErrorCodes.CannotReadFile, $"{pathToCsv} Cannot be read\n Exception:{ex.Message}\nStacktrace:{ex.StackTrace}");
return(false);
}
if (
((_csvContentLines.Length == 0 ||
(_csvContentLines.Length == 1 && string.IsNullOrEmpty(_csvContentLines[0].Trim()))) &&
_ignoreDataConversionError == false))
{
AddError(ErrorCodes.FileEmpty, "Csv file Content is empty");
return(false);
}
if (_headerPresentInFirstRow)//Read the first row as Header
{
this.HeaderColumnNamesInCsvFile = SplitLineOfTextIntoCsv.Split(_csvContentLines[0]);
return(IsCsvColumnNamesAsExpectedWithoutDuplicateColumnNames());//Throws Exception if csv columns are not as expected
}
return(true);
}
/// <summary>
/// Runs series of pre validations on the given CSV file before starting extracting data
/// </summary>
internal bool PreExtractValidation()
{
bool validationFailed = false;
if (_pathToCsv == null && _csvContentLines.Length == 0)
{
AddError(ErrorCodes.NullPath, "Please supply the file content or provide the path to the file in constructor argument");
validationFailed = true;
}
if (!string.IsNullOrEmpty(_pathToCsv) && _fileService == null)
{
AddError(ErrorCodes.ParameterNull, $"Constructor parameter 'fileService' cannot be null");
validationFailed = true;
}
if (_mapper == null)
{
AddError(ErrorCodes.ParameterNull, $"Constructor parameter '_mapper' cannot be null");
validationFailed = true;
}
if (!string.IsNullOrEmpty(_pathToCsv) && _fileService != null && !_fileService.FileExists(_pathToCsv))
{
AddError(ErrorCodes.PathNotExists, $"{_pathToCsv} does not exists");
validationFailed = true;
}
if (!string.IsNullOrEmpty(_pathToCsv) && _fileService != null && _fileService.PathGetExtension(_pathToCsv).ToUpper() != ".CSV")
{
AddError(ErrorCodes.InvalidFileExtension, $"Invalid file extension {_fileService.PathGetExtension(_pathToCsv)}. Only .csv is supported ");
validationFailed = true;
}
if (!validationFailed && _fileService != null && _mapper != null)
{
try
{
if (_csvContentLines.Length == 0)
{
_csvContentLines = _fileService.ReadAllLines(_pathToCsv);
}
}
catch (Exception ex)
{
AddError(ErrorCodes.CannotReadFile, $"{_pathToCsv} Cannot be read\n Exception:{ex.Message}\nStacktrace:{ex.StackTrace}");
return(false);
}
if (
(_csvContentLines.Length == 0 ||
(_csvContentLines.Length == 1 && string.IsNullOrEmpty(_csvContentLines[0].Trim()))))
{
AddError(ErrorCodes.FileEmpty, "Csv file Content is empty");
if (!_ignoreEmptyFile)
{
throw new CsvReadWriteException(ErrorCodes.FileEmpty);
}
return(false);
}
this.HeaderColumnNamesInCsvFile = SplitLineOfTextIntoCsv.Split(_csvContentLines[0]);
return(IsCsvColumnNamesAsExpectedWithoutDuplicateColumnNames());//Throws Exception if csv columns are not as expected
}
return(false);
}