130 lines
No EOL
2.9 KiB
Markdown
130 lines
No EOL
2.9 KiB
Markdown
- [receipts to transform ttl to spec](#receipts-to-transform-ttl-to-spec)
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- [**a**](#a)
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- [**rdfs:range**](#rdfsrange)
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- [**rdfs:domain**](#rdfsdomain)
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- [owner is **a** type](#owner-is-a-type)
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- [owner is a **owl:unionOf** types](#owner-is-a-owlunionof-types)
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- [**rdfs:subClassOf**](#rdfssubclassof)
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- [Further infos](#further-infos)
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- [RDF/S](#rdfs)
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- [range (https://www.w3.org/TR/rdf12-schema/#ch\_range)](#range-httpswwww3orgtrrdf12-schemach_range)
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- [type (https://www.w3.org/TR/rdf12-schema/#ch\_type)](#type-httpswwww3orgtrrdf12-schemach_type)
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# receipts to transform ttl to spec
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## **a**
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*it* is **a** *something*
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Example:
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```ttl
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as:id a owl:DatatypeProperty ,
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owl:FunctionalProperty,
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```
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Maps to
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```clojure
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(s/def ::id
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(s/and
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::owl/DeprecatedProperty
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::owl/FunctionalProperty))
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```
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Der token `a` in einer ttl Definition entspricht dem RDF-Prädikat `rdf:type`. Siehe:
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* https://www.w3.org/TR/turtle/#sec-iri
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* https://www.w3.org/TR/rdf12-schema/#ch_type
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Das bedeutet für das Tripel: `(R, rdf:type, C) => C instanceof rdfs:Class & R instanceof C`
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## **rdfs:range**
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*its* value is defined in a **rdfs:range** *the range*
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If range links to an other definition we map range same as **a**.
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Example:
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```ttl
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as:id rdfs:range xsd:anyURI ;
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```
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Maps to
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```clojure
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(s/def ::id
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(s/and
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...
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(sh/seq-spec ::xsd/anyURI)))
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```
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## **rdfs:domain**
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*it* belong to a **rdfs:domain** *owner*
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### owner is **a** type
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We ignore this.
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Example in namespace activitypub2
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```ttl
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as:id rdfs:domain [a owl:Class;]
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```
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Maps to
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```clojure
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```
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### owner is a **owl:unionOf** types
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It is added to the owner. That's the way to model properties. If the owner is membe of an other namespace, we create a subclass with same name in the namespce in scope and enhance the subclass.
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Example in namespace activitypub2
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```ttl
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as:id rdfs:domain [owl:unionOf (as:Link as:Object)]
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```
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Maps to
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```clojure
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(s/def ::Object (sh/map-spec (s/keys :opt [::id ...])))
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(s/def ::Link (sh/map-spec (s/keys :opt [::id])))
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```
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## **rdfs:subClassOf**
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*its* value a **rdfs:subClassOf** *the class*
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If subClassOf links to an other definition we map range same as **a**.
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Example:
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```ttl
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as:Activity rdfs:subClassOf as:Object ;
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```
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Maps to
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```clojure
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(s/def ::Object ...)
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(s/def ::Activity
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(s/and
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...
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::Object
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...))
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```
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# Further infos
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## RDF/S
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### range (https://www.w3.org/TR/rdf12-schema/#ch_range)
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"P rdfs:range C" indicates that:
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1. P is an instance of the class rdf:Property
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2. C is an instance of the class rdfs:Class
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3. all the resources denoted by the objects of triples whose predicate is P are instances of the class C.
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=>Bedeutet(?): Es gilt: Tupel = (Subjekt, Prädikat, Objekt):
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=> Wenn (P, rdfs:range, C) & (S, P, C2) => C2 is instance of C
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### type (https://www.w3.org/TR/rdf12-schema/#ch_type) |
