private void Transform(SourceContext sourceContext, TransformationMap transformationMap)
{
if (transformationMap.MappingType == MappingType.Field)
{
if (!sourceContext.Source.ContainsKey(transformationMap.KeyExpression))
{
SetEmptyOutput(sourceContext, transformationMap);
sourceContext.AddErrorForDestinationColumn(transformationMap.Output,
$"Source key {transformationMap.KeyExpression} is missed",
SourceContext.ErrorTypeTransformation);
}
else
{
if (transformationMap.TransformOnlyIfColumnExists &&
sourceContext.ListOfSchemaMissedColumns.Contains(transformationMap.KeyExpression))
{
sourceContext.Destination.Remove(transformationMap.Output);
}
else
{
sourceContext.Destination[transformationMap.Output] =
sourceContext.Source[transformationMap.KeyExpression];
}
}
}
else if (transformationMap.MappingType == MappingType.Expression)
{
sourceContext.Destination[transformationMap.Output] =
_expressionEvaluator.Evaluate(transformationMap.Expression);
}
else if (transformationMap.MappingType == MappingType.DataMapping)
{
}
}
private void SafeRun(Action action, SourceContext sourceContext, TransformationMap map)
{
try
{
action();
}
catch (Exception e)
{
SetEmptyOutput(sourceContext, map);
sourceContext.AddErrorForDestinationColumn(map.Output, e, SourceContext.ErrorTypeCleanup);
}
}
private void SetEmptyOutput(SourceContext context, TransformationMap map)
{
context.Destination[map.Output] = null;
}
