/**
* Ordinary constructor.
*
* @param graphSubjects
* @param session
* @param stream
*/
public PersistingRdfStreamConsumer(
final IdentifierTranslator graphSubjects, final Session session, final RdfStream stream) {
this.idTranslator = graphSubjects;
this.jcrRdfTools = JcrRdfTools.withContext(graphSubjects, session);
this.isFedoraSubjectTriple =
new Predicate<Triple>() {
@Override
public boolean apply(final Triple t) {
final boolean result =
graphSubjects.isFedoraGraphSubject(m.asStatement(t).getSubject());
if (result) {
LOGGER.debug("Discovered a Fedora-relevant subject in triple: {}.", t);
} else {
LOGGER.debug("Ignoring triple: {}.", t);
}
return result;
}
};
// we knock out managed RDF and non-Fedora RDF
this.stream =
stream.withThisContext(
stream.filter(and(not(isManagedTriple), isFedoraSubjectTriple)).iterator());
this.session = session;
}
@Override
public void consume() throws RepositoryException {
while (stream.hasNext()) {
final Statement t = m.asStatement(stream.next());
LOGGER.debug("Operating on triple {}.", t);
operateOnTriple(t);
}
}
protected String getPropertyNameFromPredicate(final Node subjectNode, final Property predicate)
throws RepositoryException {
return jcrRdfTools().getPropertyNameFromPredicate(subjectNode, predicate, stream.namespaces());
}