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|Packs (add-ons) for SWI-Prolog|
|Title:||OWL utility predicates over rdf library|
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|Author:||Milan Unger <firstname.lastname@example.org>|
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pl_owl. Predicates for querieng RDF graphs using OWL Semantics.
pl_owl in your code.
:- use_module(library(`pl_owl`)). hallo :- owl_assert_individual(my_ns:my_individual, my_ns:'my-class', 'Some Individual', catalog_graph).
Few utilities predicate to create and remove owl individuals and resolve the owl relations with respect to the OWL semantics.
owl_assert_individual(+Subject:iri, +Class:iri, +Label:rdf_literal, +Graph) is det
Asserts the named individual of Class with the SubjectIri IRI and % assigns it label Label. The individual is asserted into the graph Graph
owl_date_time(+TimeStamp:float, -DateTime:compound, +TimeZone:atom) is det
Unifies the Timestamp with the DateTime compound coresponding to the lexical form of RDF. TimeStamp can be atom
now to get compound for the current timestamp.
owl_format_date_time(+DateTime:compound, -Text:atom) is det
Unifies Text with the xsd representation of the date_time/7 compound.
owl_object_atom(+Object:atom, -Atom:atom) is det
Unifies Atom with the atomic representation of the Object, which is either atomic representation of literal or a label of the resource represented by the Object.
owl_reachable(+Subject, +Property, -Object) is nondet
Succeeds if Subject is reachable to Object with respect to OWL semantics. It uses the semantics of rdf_reachable/3 but Resource is not considered to be reachable to itself unless:
irreflexiveproperties of the `Property.
owl_remove_individual(+Individual:iri, +Graph) is det
Removes all rdf entries from the Graph where Individual is either in the subject or object role.
run-tests.ps1 executes the tests
To debug the module, load the
debug.pl file into prolog top.
Pack contains 8 files holding a total of 24.3K bytes.