Fig. 2

A diagram of the owlcpp Triple_store class, objects it stores, and some implemented methods. The Triple_store class serves as a container for prefix IRIs (Ns_iri), different types of RDF terms, which are accessed through the abstract Node interface, ontology document descriptions (Doc_meta), and RDF triples (Triple). Each object can be retrieved through an overloaded square bracket operator by supplying the object’s appropriately typed ID