Re: [ohf-dev] Re: HL7 Messaging Plan for OHF

[Grahame Grieve <grahame@xxxxxxxxxxxxxx>]

Sarah E Knoop wrote:
> Hi Grahame,
> Just to clarify, "run-time library with validation" will include java data 
> structures for HL7 messages? 

yes

> If so, to what granularity? Will we be able to create, say, a CX data type 
> instance outside the context of a message? 

sort of. Actually, you can create a Component and make it like a CX
data type; the trouble with HL7 V2 is that these things aren't actually
quite types. The way my library works (which is what I am proposing
for the OHF v2 library) is that you have an underlying library which 
reads and writes messages and provides version and definition support,
and then you write a conformance profile, an use that to code 
generate wrapper classes that present a clean wrapper around the 
underlying library.

> Will there be representation of all the HL7 Tables?

maybe; depends what you mean by "representation". The contents of the 
table will be available for each version. But do you want a java 
representation to the compiler? what would that mean?

> Additionally, I have re-read the PIX/PDQ enhancement proposal. You are 
> correct in their intent to make v3 a supported option. This will mostly 
> affect PIX-PDQ server side ... so it seems all we need to be concerned 
> with (from an XDS/ PIX-PDQ client) is representation for v2.5.

yes, I think for the moment we can keep the v3 work and the PIX/PDQ work 
apart.

Grahame