Grahame Grieve wrote:

> Some questions from the External package (v0.9)
>
> section 4.1: assumed types. This section is very brief. It's
> a bit of an odd section, as important things are left
> unstated (i.e. what are the expectations of whitespace for
> the STRING type?) while trivial things such as cummutivity
> of + are defined. 

I don't know that anything can be said about whitespace in Strings in 
general, can it?

> section 5.3.1, namespace. Why doesn't the valid namespace
> character set include such characters as :/&+ that are
> valid in URI's? 

this seems reasonable - I'll get it added.

> section 5.3.2 & 5.3.3: ACCESS_GROUP_REF and PARTY_REF inherit
> from OBJECT_REF but this isn't stated in the tables. is there
> some pattern to when things are and aren't stated in the tables? 

this was an error that the DSTC already found.

> section 5.3.5.1. There's a throwaway line at the end of the
> section that archetypes can also be identified by ISO OID's.
> While I hope that I never see that ;-), it's not clear from
> the stated syntax how that would fit in. Nor, while we're here,
> is it clear whether it's valid to use some terminology based
> identification (such as LOINC for pathology archetypes) 

I have to admit, it's not my favourite either - I don't really like OIDs 
but it seems everyone else does. So archetypes will have two ids: a 
multi-axial id and an OID (whcih may be optional - we don't know yet). 
The multi-axial one is defined in detail in the Support RM package 0.9.1 
at 
http://www.deepthought.com.au/health/openEHR/support/support_rm_0_9_1.pdf 
and I think is a more useful one.

- thomas


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