/// <summary>
/// Populates the <see cref="DataRow" /> using the specified <paramref name="row" />.
/// </summary>
/// <param name="importContext">The import context.</param>
/// <param name="dataRow">The data row to populate.</param>
/// <param name="row">The imported source data row.</param>
/// <returns>
/// The <see cref="DataRow" /> with the populated data.
/// </returns>
protected virtual async Task <bool> PopulateRow(ImportProcessContext importContext, DataRow dataRow, string[] row)
{
try
{
foreach (var field in importContext.MappedFields)
{
if (field.Definition.Default.HasValue)
{
dataRow[field.Definition.Name] = GetDefault(field.Definition, importContext.UserName);
continue;
}
var index = field.FieldMap.Index;
if (!index.HasValue)
{
continue;
}
var value = row[index.Value];
var convertValue = await ConvertValue(importContext, field.Definition, value);
dataRow[field.Definition.Name] = convertValue ?? DBNull.Value;
}
if (importContext.Definition.Validator == null)
{
return(true);
}
var validator = importContext.GetService(importContext.Definition.Validator) as IImportValidator;
if (validator == null)
{
throw new InvalidOperationException($"Failed to create data row validator '{importContext.Definition.Validator}'");
}
await validator.ValidateRow(importContext.Definition, dataRow);
return(true);
}
catch (Exception ex)
{
importContext.Errors.Add(ex);
if (importContext.Errors.Count > importContext.Definition.MaxErrors)
{
throw;
}
return(false);
}
}
/// <summary>
/// Converts the source string value into the correct data type using specified <paramref name="field" /> definition.
/// </summary>
/// <param name="importContext">The import context.</param>
/// <param name="field">The field definition.</param>
/// <param name="value">The source value.</param>
/// <returns>
/// The convert value.
/// </returns>
/// <exception cref="InvalidOperationException">Failed to create translator for field '{field.Name}'</exception>
protected virtual async Task <object> ConvertValue(ImportProcessContext importContext, FieldDefinition field, string value)
{
if (field.Translator == null)
{
value.TryConvert(field.DataType, out var convertValue);
return(convertValue);
}
var translator = importContext.GetService(field.Translator) as IFieldTranslator;
if (translator == null)
{
throw new InvalidOperationException($"Failed to create translator for field '{field.Name}'");
}
var translatedValue = await translator.Translate(value);
return(translatedValue);
}
