/// <summary>
/// Gets the row value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="row">The row.</param>
/// <param name="propertyName">Name of the property.</param>
/// <param name="parseErrors">The parse errors.</param>
/// <param name="parseErrorMessage">The parse error message.</param>
/// <param name="isNullable">if set to <c>true</c> [is nullable].</param>
/// <returns>System.Nullable<T>.</returns>
/// <exception cref="System.ArgumentNullException">
/// row
/// or
/// propertyName
/// or
/// parseErrors
/// </exception>
public virtual T?GetRowValue <T>(dynamic row, string propertyName, ref List <string> parseErrors, string parseErrorMessage = null, bool isNullable = false) where T : struct
{
if (row == null)
{
throw new ArgumentNullException("row");
}
if (String.IsNullOrWhiteSpace(propertyName))
{
throw new ArgumentNullException("propertyName");
}
if (parseErrors == null)
{
throw new ArgumentNullException("parseErrors");
}
string input = null;
bool valueFound = false;
if (FileIOHelpers.IsDynamicType(row))
{
IDictionary <string, object> dict = row as IDictionary <string, object>;
if (dict.ContainsKey(propertyName))
{
input = Convert.ToString(row[propertyName]);
valueFound = true;
}
}
else
{
//the object is not a dynamic object, so get the value using reflection
var prop = row.GetType().GetProperty(propertyName);
if (prop != null)
{
input = Convert.ToString(prop.GetValue(row, null));
valueFound = true;
}
}
if (valueFound)
{
return(GetRowValue <T>(input, ref parseErrors, parseErrorMessage, isNullable, propertyName));
}
else
{
return(default(T?));
}
}
/// <summary>
/// Returns an enumerator that iterates through the collection.
/// </summary>
/// <returns>A <see cref="T:System.Collections.Generic.IEnumerator`1" /> that can be used to iterate through the collection.</returns>
public IEnumerator <SqlDataRecord> GetEnumerator()
{
if (_data == null || !_data.Any())
{
yield break;
}
PropertyInfo[] properties = _importType.GetProperties();
StringComparer comparer = StringComparer.InvariantCultureIgnoreCase;
this._validator = this._validator ?? new ObjectValidator();
bool?isDynamicType = null;
int errorColumnOrdinal = -1;
var sqlMetaArray = _sqlMetadata.ToArray();
if (_sqlMetadata.Any(x => comparer.Equals(x.Name, _errorColumn)))
{
SqlDataRecord tempRecord = new SqlDataRecord(sqlMetaArray);
errorColumnOrdinal = tempRecord.GetOrdinal(_errorColumn); //will cause an exception if it does not exist, hence the any check
tempRecord = null;
}
foreach (dynamic row in _data)
{
_rowIndex++;
SqlDataRecord record = new SqlDataRecord(sqlMetaArray);
List <string> errors = new List <string>();
//check the first object to see if it is a dynamic type as we dont need to run it throught the object mapper in that case
if (!isDynamicType.HasValue)
{
isDynamicType = FileIOHelpers.IsDynamicType(row);
}
T rowObj = default(T);
if (isDynamicType.Value)
{
try
{
rowObj = FileIOUtilities.MapObject <T>(row, _rowIndex, _validator, _fileValuesMapper, ref errors);
}
catch (Exception ex)
{
errors.Add(ex.ToString());
}
}
else
{
rowObj = row;
}
try
{
//built in data annotation validation
this._validator.TryValidate(rowObj, ref errors);
//custom validation
if (_customValidator != null)
{
_customValidator.Invoke(rowObj, ref errors);
}
}
catch (Exception ex)
{
errors.Add(ex.ToString());
}
ISqlRecordMapper mapperObj = null;
//if they provide a custom mapper use that one over the interface.
if (this._customSqlMapper != null)
{
this._customSqlMapper.Invoke(rowObj, record, _rowIndex, errors);
}
else if ((mapperObj = rowObj as ISqlRecordMapper) != null)
{
mapperObj.MapSqlRecord(record, _rowIndex, errors);
}
else //last ditch effort, hopefully they don't rely on this
{
object val;
//try to set the rows from the metadata, and the properties
foreach (SqlMetaData metaData in _sqlMetadata)
{
string name = metaData.Name;
val = null;
if (!comparer.Equals(name, _errorColumn))
{
var prop = properties.FirstOrDefault(x => comparer.Equals(x.Name, name));
if (prop != null && (val = prop.GetValue(rowObj, null)) != null)
{
record.SetValue(record.GetOrdinal(name), val);
}
}
}
//if an error column is defined, set the import errors
if (errorColumnOrdinal != -1 && errors.Count != 0)
{
string errorMessage = FileIOHelpers.ErrorsToXml(errors, _rowIndex);
record.SetString(errorColumnOrdinal, errorMessage);
}
}
yield return(record);
}
}
