RE: RE: [HAPI-devel] ADT^A13 bad parse

[<ni...@sk...>]

Hi,

My opinion on this is that HAPI should be able to detect non-standard segments in a message structure (eg the PD1 segment that is not allowed in 2.2 ADT) an stop parsing when these kind of errors are encountered.

If customisation is required Z-segments, or custom messagestructures should be used. Hapi should not block processing of course when a Z-segment is encountered.

I think that this makes sense because if you don't follow \"the rules\" one day you'll come accross an application which has to process your \"modified\" message that won't be able to process your message and reject the message.

Best Regards

Nico





I have run into the same thing. After digging further, I have realized that
at my company, the HL7 specification has been modified at will in many
different places. The result is that I must create my own modified model
implementation to match the structure of the messages that I end up seeing. 

Cheers,
Court

-----Original Message-----
From: Archie Cobbs [mailto:ar...@de...] 
Sent: Monday, December 13, 2004 2:00 PM
To: hl7...@li...
Subject: [HAPI-devel] ADT^A13 bad parse



We received an ADT^A13 message that has \"2.2\" in the MSH.12 field, but
contained these segments: MSH EVN PID PD1 NK1 PV1 PV2 OBX AL1 DG1 DG1 GT1
IN1 IN2 ..

Note that the ability to include the \"PD1\" segment was added in 2.3. So
technically this is a bogus message because it says \"2.2\" but has a PD1
segment (right?).

In any case, HAPI happily parses this message but the resulting XML contains
information in the wrong places, etc. For example, the PV1.3 information
ends up in ADT_A13.IN1IN2IN3/NK1/NK1.40.

So although it's nice that HAPI handles this message at all, it seems like
it doesn't do so very gracefully. Is this the intended behavior?

Could HAPI be configured to try a later version of the spec if the message
doesn't parse correctly, instead of putting things in the wrong field? It
seems like in practice the MSH.12 field is sometimes just more of a hint
than reality.

Thanks,
-Archie

__________________________________________________________________________
Archie Cobbs * CTO, Awarix * http://www.awarix.com


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