This package defines a set of APIs required to implement an RDF Graph and it's associated objects. The basis for this package structure comes from various sources including: the W3C RDF specifications and existing Java mappings including: Jena, Sesame and Sergey Melnik's RDF API.
An RDF Graph is made from RDF triples. Triples consist of a subject, predicate and object. Triples are made of nodes. Nodes can either be resources or literals. Resources can either be labelled with a URI, called URI references, or be blank.
To construct nodes you use a GraphElementFactory which allows you to create any of the nodes individually. This allows a separation between the implementation of the Graphs and of Node storage and handling.