[HAPI-devel] Insert segment repetition

[Andrew B. <And...@rc...>]

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