Hi Tom,
Your first question is well timed. The new 2.2 release just introduced the
ability for you to configure servers to not send any ACK/NAK message in
response when an application exception is detected in the processing code.
This wasn't designed with your exact use case in mind, but I believe it
should meet your needs.
Unfortunately enhanced mode support is not great in HAPI. I think there is
some support that was contributed at one point in the deprocated
.protocol.* packages but I haven't ever used it. Possibly someone else on
the list could speak to that.. Really what would be idea would be for
someone to have a go at adding support into the main server implementation.
I imagine it wouldn't be too hard, but it wouldn't be trivial either. Help
welcome! :)
Cheers,
James
On Tue, Mar 4, 2014 at 5:49 PM, Tom Wilson <twil...@sujansky.com> wrote:
>
>
> Hi. I am trying to implement enhanced ACK mode with HAPI and encountered
> the same problem described here:
>
>
>
>
> https://www.mail-archive.com/hl7api-devel%40lists.sourceforge.net/msg01398.html
>
>
>
> I am testing a system which receives ORU messages, does some processing,
> and sends an asynchronous ACK (enhanced mode) back to the sending system.
>
>
>
> Two things I want to accomplish:
>
>
>
> 1) Implement a HAPI server which will receive ORU messages, and
> optionally return an accept ACK. It appears that it is not possible to omit
> the accept ACK. How do I implement the processMessage method to not send an
> accept ACK? If I simply return null, HAPI throws an exception and returns
> its own NACK:
> MSH|^~\&|||||20140304142506.948-0800||ACK^R01^ACK|502|D|2.5.1
> MSA|AE|2013101516464300008
> ERR|||207^Application internal error^HL70357^^^^^^Message may not be null|E
>
> 2) For testing purposes I have several "dummy" HAPI servers which:
>
> a. Send HL7 ORU messages and receive ACKs asynchronously
>
> b. Receive HL7 ORU messages and send ACKs synchronously
>
> c. Print everything to stdout
>
>
>
> I don't care so much about data integrity (this is checked manually during
> testing). In fact, it would be easier if I had one HAPI server that
> receives ACKs and prints them to stdout without caring if the message
> control ID matches a previously sent message.
>
>
>
> So is enhanced ACK mode supported? And how would that work?
>
>
> Thanks in advance,
>
>
>
> -tom
>
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