SPARQL - 获取类的对象属性和数据类型属性的确切类型

Question

I want to get all the properties of a class. If a property is a datatype property I want to know its exact type ie float, integer, date etc.

Running the following query I get only if a property is an object property or a datatype property

SELECT ?class ?property ?type
WHERE {
    ?resource ?property ?target .
    ?property rdfs:domain ?class .
    ?resource a ?class .
    ?property rdf:type ?type .

}

Results

:Store  :location http://www.w3.org/2002/07/owl#ObjectProperty
:Product :price http://www.w3.org/2002/07/owl#DatatypeProperty

How can I specify the type of a property if it is a datatype property? For example, I would like to know not only that price is a DatatypeProperty but it is a float.

Thank you.

Answer 1

The datatype gets specified as the range ( rdfs:range ) of a datatype property.

SELECT ?class ?property ?type ?range
WHERE {

    ?resource ?property ?target .
    ?resource a ?class .
    ?property rdf:type ?type .

    OPTIONAL {    
      ?property rdfs:domain ?class .
    }

    OPTIONAL {
      ?property rdfs:range ?range .
    }

}

(I used OPTIONAL so that your query also lists properties for which no domain and/or range is specified.)

Result: Screenshot