In which case we are not advised to use Transformers...?

Question Posted / srikanth

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In which case we are not advised to use Transformers...?..

Answer / aarthi srinivasachari

When exception occurs in a transformer, it swipes off the
pipeline values and 'lastError' will not have the service
stack too. So Transformer is not advised when there is a
possibility of exception from the service used as
transforner. Ex: addInts service, this would throw
exception when there is 'null' input. So if there is a
possibility that one value may be null, do not use
transformer for this value trnaformation.
Also addInts is a common service that can be invoked by
many services. When an exception is caused by addInts being
used as transformer - you can guess how tough it would be
to track down the service that failed with the exception.

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In which case we are not advised to use Transformers...?..

Answer / rajesh.ramisetty

The above answer is partial correct and this is also one of
the pitfalls of get last error.It will catch the latest
exception and overwrites the previous exception,so we cant
guarantee all the exceptions are caught and accounted in
getLastError.

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In which case we are not advised to use Transformers...?..

Answer / sushma

I am not sure but there wont be guarantee of execution in sequence

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