On 06/10/2012 16:13, pablo pazos wrote:
> Hi all,
>
> I found there is no CONTRIBUTION XSD defined on the openEHR XDS, and 
> if it exists, I can't commit CONTRIBUTIONs using only one XML message, 
> because CONTRIBUTION references (using OBJECT_REF) the VERSIONs I need 
> to commit, but each VERSION also references (by OBJECT_REF) the 
> container CONTRIBUTION.
>
> The main problem here is: the instances of those classes (CONTRIBUTION 
> and VERSION<COMPOSITION>) are distributed objects. So if I send 2 
> messages to the EHR Server, one to create the CONTRIBUTION and other 
> to create VERSIONs, the fisrt CONTRIBUTION.versions will be empty on 
> the server, so invalid for a while (until it's VERSIONS are committed).
>
> So, I'm beginning to suspect that I need a little protocol to be 
> defined here. The other option is to define my own XSD for an envelope 
> that could include both, CONTRIBUTION and it's VERSIONs. I prefer to 
> define a protocol than new custom XSDs.

well actually, you need both. The additional XSD part should be 
relatively easy - it's just a case of modelling a joined up network of 
objects. You do it by matching up the Contribution Uid references with 
Composition version uids. A simple outer container structure will be 
needed I guess.

Then you will need an XML-oriented EHR service interface, which contains 
some of the existing functions (any stateful stuff like login, session 
setup etc) and functions for committing content, like 
xmlCommitContribution (XmlContrib aContrib)

- thomas

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