Jim,
You may want to just go with Bryan when he says that "you have to customize
the message class to put a Z-segment in the middle of a group." HAPI
obviously has some default behavior for deciding where an unknown Z-segment
belongs when it encounters it in a message in the middle of parsing. It
clearly isn't where we like to think it belongs. When I say "we" I mean
those of us in public health using the CDC 1977 standard for Electronic Lab
Reporting based on the HL7 v2.3 ORU_R01 message (what we call "2.3.z"
because of the ZLR segment).
I have code for this (ZLR segment class,
ca.uhn.hl7v2.model.v23.group.ORU_R01_ORDER_OBSERVATION modified to add the
ZLR, code that uses these two classes), which I can send you if you like.
I have already made it available to James Agnew for posting on the HAPI
website.
Charles Fisher
Division of Epidemiology
New York State Dept. of Health
518-474-2735
Jim Krygowski
<[EMAIL PROTECTED]
com> To
Sent by: Bryan Tripp <[EMAIL PROTECTED]>
hl7api-devel-boun cc
[EMAIL PROTECTED] hapi-list
orge.net <[email protected]
>
Subject
03/28/2007 10:37 Re: [HAPI-devel] Placement of ZLR
AM segment
Hi Bryan-
Attached is a test file I've been using for in my unit tests for the
transformation. The file was generated using a conformance profile
generated by VA's Message Workbench and a sample message generated by
NIST's Message Maker. It conforms to the layout described in my original
message. I've also done a rough comparison of the test file against the
live data we're receiving from the laboratory in question and the two
match. If you run the message through the parser I think you'll see the
behavior I'm describing. If you (or your team) have time, maybe you can
take a look at the output and comment on it?
Thanks,
Jim
> Date: Thu, 22 Mar 2007 17:13:10 -0400
> From: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
> Subject: Re: [HAPI-devel] Placement of ZLR segment
> CC: [email protected]
>
> Hi Jim,
>
> No, you have to customize the message class to put a Z-segment in the
> middle of a group. Actually looking at your output structure, the ZLR
> should appear after the OBX group ... is that not happening?
>
> Bryan
>
> On 3/13/07, Jim Krygowski <[EMAIL PROTECTED]> wrote:
> >
> > Hey All-
> >
> > I'm in the middle of coding a 2.3.z (as defined by CDC's ELR guide) to
2.3.1
> > message transformer and have run into something of a problem. The
ORU^R01
> > message I'm transforming looks like this:
> >
> > MSH
> > PID
> > {
> > OBR
> > ZLR
> > {
> > OBX
> > { [ NTE ] }
> > }
> > }
> >
> > but what I'm getting out of HAPI once I parse the message looks like
this:
> >
> > MSH
> > PID
> > {
> > OBR
> > {
> > ZLR
> > OBX
> > { [ NTE ] }
> > }
> > }
> >
> > So a message like:
> > MSH...
> > PID...
> > OBR...
> > ZLR...
> > OBX|1...
> >
> > ends up with two observations, one containing the ZLR and a blank OBX
and
> > the other for the OBX:
> >
> > response(0).order_observation(0).observation(0) contains
> > ZLR and an empty OBX
> > response(0).order_obsercation(0).observation(1) contains
> > OBX 1
> >
> > I suppose there's no way for HAPI to know a priori that the ZLR in this
> > message should be associated with the order_observation group and not
the
> > observation group so is it possible to direct the parser to associate
it in
> > that fashion? The issue is clearly something I can code around but it
would
> > be cleaner if I didn't have to.
> >
> > Thanks,
> >
> > Jim
> >
> >
> >
> >
> >
> >
> >
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