#498: Started with examples

[HolgerKnublauch]

Closes #498

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[recalcitrantsupplant]

Looking at the first example, is there a way the link between the function call and the function (ex:average) can be made more explicit?

Something like:

ex:CompanyShape-averageIncome
    a sh:PropertyShape ;
    sh:path ex:averageIncome ;
    sh:datatype xsd:decimal ;
    sh:values [
        shnex:call ex:AverageExpression ;
        ex:average [
            shnex:path ( ex:employee ex:income )
        ]
    ]

Otherwise I assume an implementation knows it is a function not an IRI based on the syntax (+ possibly a function register).

[HolgerKnublauch]

Yes, for all these expression functions, there can be a triple such as ex:average rdfs:domain ex:AverageExpression and then [ ... rdf:type ex:AverageExpression ] which IMHO makes a lot of sense. We can state that rdf:type triples are optional but allowed.

[HolgerKnublauch]

I have implemented the named parameter functions in our product and it appears to work. I am yet to confirm the list parameter syntax but don't expect problems.

[robert-david]

5.3 Arg Expressions should provide an example.