Hi Eugene,
It certainly depends on how malformed the message is. If you are able to
parse out minimal data required for a qualified response (i.e. the MSH
segment is somehow valid), you have Parser#getMinimalResponseData that
returns a MSH segment that can be used for your response. If you are using
HAPI 2.1, you might also want to have a look at
RespondingValidationExceptionHandler#generateResponseMessage, where the
above mentioned Parser method is used.
Although this is certainly not perfect, it provides a good starting point,
though.
If your request is complete "garbage", you probably have to "invent" some
generic NAK.
cheers
Christian
2013/6/11 Eugene Berman <eugene.ber...@mulesoft.com>
> One of the use cases that I need to deal with is to return a NACK in
> response to malformed messages. For example, if I send an XML message that
> cannot be parsed by the HAPI parser, the exception will be thrown, but then
> I need to generate a NACK and return it to the client. My question is, how
> can I generate the NACK if the inbound message cannot be parsed? Normally I
> would call generateACK() method and populate ERR segments, but if I don't
> have an incoming message as a HAPI object, I cannot call the generateACK
> method. Is there any way to create a "default" NACK?
>
> --
> Eugene Berman
> Sr. Enterprise Solutions Architect
> ----
> MuleSoft Inc.
> 77 Geary Street, Ste. 400
> San Francisco, CA 94108
> Office: 415 229 2063
> Website: http://www.mulesoft.com <http://www.mulesoft.com/>
> ---
> Entia non sunt multiplicanda praeter necessitatem!
>
>
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