Hi Christian,
I am relying on the untyped message, however I have tested by casting the
message back to a typed message and I found the same result:
((ca.uhn.hl7v2.model.v231.message.ADT_A01)msg).insertNK1(2);
// ca.uhn.hl7v2.HL7Exception: Invalid index: 2, structure NK1 must be between 0
and 1
Suprisingly, inserting in order does make the problem disappear in the same way
as Terser.set, with the unexpected side effect of not clearing the data in the
initial NK segment.
((ca.uhn.hl7v2.model.v231.message.ADT_A01)msg).insertNK1(1);
((ca.uhn.hl7v2.model.v231.message.ADT_A01)msg).insertNK1(2);
// no runtime error
Many thanks for your help.
Andrew
From: Christian Ohr [mailto:christian....@gmail.com]
Sent: Friday, 1 November 2013 1:03 AM
To: Andrew Bowden
Cc: hl7api-devel@lists.sourceforge.net
Subject: Re: [HAPI-devel] Insert segment repetition
hi,
do you rely on working on an untyped message (i.e. AbstractMessage)? In this
case, adding a segment (repetition) can be ambiguous as it is not clear where
in the message the segment should actually be added. Messages of different
types and versions usually have a dedicated structure definition, which can
change even for the same message type in different versions.
My experience is that when you create or modify a message using the HAPI API,
you should work on typed messages (like
ca.uhn.hl7v2.model.v25.message.ADT_A01). And here the API provides you with
methods like insertNK1(int rep):NK1.
cheers
Christian
2013/10/31 Andrew Bowden
<andrew.bow...@rch.org.au<mailto:andrew.bow...@rch.org.au>>
Hi all,
What is the best way to insert a new segment into an existing message. I need
to add a repeating NK1 to transform an existing message for compliance, however
whenever I try to insert a new NK1 segment using a terser, the code throws an
exception. I can avoid this by setting the first NK1 again, however this
doesn't feel like the best way to approach the problem. I would be interested
in any thoughts as to the best way to approach the problem.
<code>
private AbstractMessage msg;
public constructor(rawMsg){
msg = (AbstractMessage)parser.parse(rawMsg);
Terser t = new Terser(msg);
hapiTerser.set("/.NK1(2)-1-1", "2");
// throws HL7 Exception - ca.uhn.hl7v2.HL7Exception: Can't
return repetition #2 of NK1 - there are currently only 1 repetitions so rep#
must be between 0 and 1
}
</code>
I have found that if I: hapiTerser.set("/.NK1-1-1", "1");, the problem appears
to go away, so I can either iterate over each item or deepcopy to get them
across, however this feels like a hack to get this working.
I appreciate you taking the time to look at this problem and welcome any
suggestion.
Andrew
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