remove "Compounds"? what is cim:Status?

[VladimirAlexiev]

"Compounds" are cims:dataTypes that are neither Primitive, nor have unit/multiplier:

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX cims: <http://iec.ch/TC57/1999/rdf-schema-extensions-19990926#>
select * where {
  ?prop a rdf:Property; cims:dataType ?compound. 
  ?compound cims:stereotype "Compound"
}

prop	compound
dm: DifferenceModel.forwardDifferences	rdf: Statements
dm: DifferenceModel.preconditions	rdf: Statements
dm: DifferenceModel.reverseDifferences	rdf: Statements
dm: DifferenceModel.forwardDifferences	rdf: Statement
dm: DifferenceModel.preconditions	rdf: Statement
dm: DifferenceModel.reverseDifferences	rdf: Statement
cim: StreetAddress.status	cim: Status
cim: Location.mainAddress	cim: StreetAddress
cim: StreetAddress.streetDetail	cim: StreetDetail
cim: StreetAddress.townDetail	cim: TownDetail

cim:Status is the only compound that has no fields. It's not an Enumeration either:

cim:Status cims:stereotype "Compound".
cim:StreetAddress.status cims:dataType cim:Status.

So it's undecided what it is ;-)

• Its referencing class cim:StreetAddress is defined in 61970-600-2_GeographicalLocation-AP-Voc-RDFS2020_v3-0-0. It is not used, which makes this problem about its status almost a non-issue.
• rdf:Statement vs rdf:Statements should be replaced with named graph
• StreetAddress, StreetDetail, TownDetail are objects with some props: but are not used either, AFAIK

Currently links to Compounds are mapped ObjectProperty. I think cim:Status needs to be defined, or maybe all "Compounds" should be removed?

[griddigit-ci]

We may need to discuss but here some feedback

• half of this is in the difference exchange trying to mimic what is in the 61970-552 document. I am not sure we are using the statement, etc. We can definitely improve there
• the rest is from GL profile. I see the status defined in the 61970-600-2_GeographicalLocation-AP-Voc-RDFS2020_v3-0-0

[VladimirAlexiev]

• yes, forwardDifferences, reverseDifferences are named graphs, so rdf:Statement will go away
• there's no harm to keep Street and Town, although they are not used by the rest of the ontologies
• but Status is a bad class: it doesn't define any props or enum values, and the name is too generic (when I hear "status" in relation to CIM, I think status of a PSR, not of a StreetAddress)