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CIM Issues #6355

[GMDM #20] Clarification of extension association expression in rdfs

Added by Pat Brown 10 months ago. Updated 10 months ago.

Status:
Review
Priority:
Normal
Author/Contact Info:
Pat Brown pat@cimpledata.com
Base Release:
Solution to be Applied To:
Solution Version:
Solution Applied By:
Completion Date:
CIM Keywords:
Breaking Change:
No
Breaking Change Description:
CIM Impacted Groups:
WG13
Requestor:
Pat Brown
Standard(s):

61970-501?

Version:
Clause:
Sub-Clause:
Paragraph:
Table:
Originally Closed in Version:
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Description

Associations are described by 2 resources (one representing each direction of the association). The general convention for the construction of the identifiers for the 2 association resources is:
<rdf:Description rdf:about="class1 name.role name on class2 end">
and
<rdf:Description rdf:about="class2 name.role name on class1 end">

Should the association be identified in the following way if the association is an extension:
<rdf:Description rdf:about="extension namespace#class1 name.role name on class2 end">
.
<cims:stereotype>extension namespace prefix</cims:stereotype>
.
</rdf:Description>
and
<rdf:Description rdf:about="extension namespace#class2 name.role name on class1 end">
.
<cims:stereotype>extension namespace prefix</cims:stereotype>
.
</rdf:Description>

Meaning that the extension namespace on the rdf:about is assumed to apply to the association as a whole and not the first listed class? Or another way to put it, you can't tell by looking at the rdfs description of an extension association what the namespace of the source object is. You only know the namespace of the association itself.


Files


Decision

Oslo, 14 June 2023
1) Fix issue in Cimcontextor so that it is possible to create association between 2 CIM classes as inherited association
2) Review the profiling guidelines so that it is required that extension between 2 CIM classes is done by creating an association between 2 extended classes inheriting from the 2 CIM classes

3) In the profiling guideline add a rule to require that extended classes shoudl have the same name but different stereotype indicationg the namespace.

#1

Updated by Chavdar Ivanov 10 months ago

  • Status changed from New to Open
  • Decision updated (diff)
#2

Updated by Chavdar Ivanov 10 months ago

  • Status changed from Open to Review
  • Decision updated (diff)

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