Cardinality on a relationship between two classes

[elsdvlee]

How can one indicated the cardinality of a ObjectProperty if we have 2 ObjectProperties for the same class expecting the same class.

Example: suppose that I want to state that always 1 fromLocation is needed, and always 2 toLocations are needed

AS IS

class LocationToLocation {
string[] replenishmentMethods sc:replenishmentMethod 1..*
SupplierLocation locationFrom schema:fromLocation
SupplierLocation locationTo schema:toLocation
}

LocationToLocation -- "1" SupplierLocation

both locationFrom and LocationTo need to hove the same cardinality. Adding LocationToLocation -- "2" SupplierLocation doesn't work and wouldn't be clear

WANTED

class LocationToLocation {
string[] replenishmentMethods sc:replenishmentMethod 1..*
SupplierLocation locationFrom schema:fromLocation 1
SupplierLocation locationTo schema:toLocation 2
}

LocationToLocation -- SupplierLocation

In general I believe that it would also be more clear if the cardinality on DataTypeProperties and ObjectProperties are indicated in the same way. Is there a specific reason why this is not the chosen approach in the present implementation?

[pheyvaer]

Hi @elsdvlee

Yeah indeed that is not supported at the moment. The suggestion that you made is indeed a good solution for this.

In general I believe that it would also be more clear if the cardinality on DataTypeProperties and ObjectProperties are indicated in the same way. Is there a specific reason why this is not the chosen approach in the present implementation?

I did it this way because I didn't want to alter the default behaviour of Mermaid if need really needed.