Quantity Value restrictions based on Unit or QuantityKind

[fkleedorfer]

As we see in many issues, for example #1047, some units or quantitykinds require datatypes vor the quantity values other than xsd:double or xsd:decimal.

How about making it explicit by adding a shacl shape that checks quantity values based on some information associated with units and quantity kinds and assuming a floating point number as default?

[steveraysteveray]

Hopefully we can treat this explicitly once our datatypes graphs are cleaned up in the near future. Then we could create SHACL shapes for the appropriate datatype for all quantitykinds and units. I imagine we would use qudt:Aspect subclassing for this.

[fkleedorfer]

I imagine we would use qudt:Aspect subclassing for this.

Need to look into that, but I thought it's probably just one triple linking the unit/quantitykind to a definition of the data type - no?

[steveraysteveray]

Could be, unless we want to construct things like unions of datatypes. We wouldn't want to have to repeat multiple triples for units.

[fkleedorfer]

We'll see, I suppose.

[ralphtq]

Union types make a lot of sense, as do enumerations. In the early days of QUDT there was support for that. Maybe that was not promoted to the public QUDT. I will look into this. It is relevant for me, because I am reviewing/updating the datatypes ontology, the "T" in QUDT.