Hi Sam,
thanks for your reply. I try to explain which is my issue.
Generally in an application form we can have persistent and not persistent
data. Actually template specifications allow at most one composition in each
template, but this means that a template contains or all persistent data or
all not persistent data.
In order to define template with both persistent and not persistent data, we
should be able to have template with more than one composition. Has anyone
solved this problem?

leo



Sam Heard-3 wrote:
> 
> Hi Leo
> 
> Persistent is a feature that has meaning and cannot be changed at runtime.
> It means that the data goes on being relevant and does not apply to one
> clinical event. It also means that updates are not fixing errors or
> incompleteness - they are a new statement of the information. The old data
> are not invalidated for the period that was covered.
> 
> So you can think of persistent compositions as Managed Lists (current
> medications, allergies etc)
> 
> I wondered how you were interpreting it?
> 
> Cheers, Sam
> 
>> -----Original Message-----
>> From: openehr-technical-bounces at openehr.org [mailto:openehr-technical-
>> bounces at openehr.org] On Behalf Of Leonardo Moretti
>> Sent: 03 March 2009 23:43
>> To: openehr-technical at openehr.org
>> Subject: Definition of persistence for a composition
>> 
>> 
>> Hi all,
>> I'd like to define persistence for a composition dinamically (and not
>> statically in an archetype), because this property changes depending on
>> application or application context.
>> 
>> If I'd like to define a composition as persistent, could I define this
>> into
>> a template? Is this the correct way to use templates? Moreover, in some
>> particular case, I don't exclude to change persistence attribute for a
>> compositon at run-time, depending of application context.
>> 
>> Any other suggestions?
>> leo
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