basic noob question - adding properties to classes
stevenemrick opened this issue · 7 comments
I have a data structure as follows - each row contains a class.
| Id | Name | parentId | myFavorite |
|---|---|---|---|
| 1 | First Level | ||
| 2 | Second Level | ||
| 3 | Third Level | ||
| 4 | First child | 1 | N |
| 5 | Second Child | 2 | N |
| 6 | Third Child | 3 | Y |
So the classes with no parentId are the top levels, and subclasses reference their respective parentID. Each class has a property, myFavorite, which could be null but is a boolean when filled it is not null. I can import the classes easily, but how do I create a myFavorite property on each class and define as an xsd:boolean? This is where I am getting stuck. Thank you.
Perhaps I am misunderstanding your question, but in OWL data properties are used to associate an OWL individuals with a value. Properties cannot be associated with classes in the way you desire.
FYI, I'd recommend the Protege mailing list for further questions: https://protege.stanford.edu/support.php
It has a very active community.
I think this rule would do exactly what you want:
Class: @A*(rdf:id)
Annotations: rdfs:label @B*
SubClassOf: @C*
SubClassOf: isMyFavorite value @D*(xsd:boolean mm:replaceAll("Y","true"))
PS: Took me some time to figure it out how to write this so that it works, so not a newbie question at all. But as @martinjoconnor said, such questions should go to the mailing list.
Quick note to @stevenemrick : You will need to create a datatype property called isMyFavorite in your ontology, before you run the rule that I suggested.
ok thank you @martinjoconnor and @csnyulas. Yes the example I had above used a boolean data property. Your examples were helpful. If I may, is ObjectProperty allowed to be imported? Say I had an additional column called favoriteSport (and that I've declared in my ontology) as a property of each class - can I import it in? It seems like it is not supported but wanted to verify.
ok - figured this one out - thanks again!
As you figured it out, I assume, you can create axioms that use ObjectSomeValuesFrom, ObjectAllValuesFrom, ObjectHasValue, and other class expressions that refer to object properties.
The object properties, themselves, can come from the spreadsheet. Here are some examples.
Yes - I found the grocery store tutorial which was very useful. Thanks.