I've noticed a subtle side effect in using .addN() of ConjunctiveGraph ... there is no check of the context provided in each quad as to whether the context is derived from rdflib.Graph.Graph, it will be added no matter what it is. If a context is not derived from rdflib.Graph.Graph, then it methods such as .contexts() in BackwardsCompatableGraph which call .identifier on a context fail (though I see contexts of ConjuntiveGraph just yield the context object itself). Is is intended that contexts can be any kind of object in ConjunctiveGraph?
Tests generally show this up, but it can be very subtle if unwary people use say a string form of a URI or a URIRef as a context in adding quads and don't check results of filtering across contexts accurately. cheers Matt _______________________________________________ Dev mailing list Dev@rdflib.net http://rdflib.net/mailman/listinfo/dev
