Ontology to support an RDF persistent cache and SPARQL/SeRQL rules for virtual triples. Construct Rule which creates triples. Provisions for writing rules either in SeRQL or SPARQL (i.e. both properties exist). Also documentation properties domainProperty and rangeProperty help explain how the Construct Rule connects things, though that is by no means sufficient documentation. Classes to faciliate RDF caching Connects a ConstructRule to properties that it creates, i.e. its range. connects a ConstructRule to properties that it looks for, i.e. in its domain. boolean flag to indicate that a RDF store is fully uploaded. Can be checked for to keep a triple-store that is in the process of being loaded from being used. last_modified time for the RDFDocument, for use in caching. last_modified time for the code used to convert the document to RDF, used in caching Text of ConstructRule written in SPARQL. text of ConstructRule written in SeRQL. The rule should remove pre-existing output triples, so that the rule can be run repeatedly until no triples are created. when a RDFDocument contains another document, it suppresses loading of the inside document despite owl:imports or rdfs:seeAlso requests for it 2005-10-04T00:00:00Z