JENA-1400 is a small step to providing some degree of flexibility in
Fuseki for adding custom services to a dataset. The JIRA is needed
because currently the OperationName set is sealed.
I'm not seeing this as a common thing to do. Many things are better done
(e.g. data conversion) output and streamed to Fuseki.
The one I have mind is implementing a patch service (and using HTTP
PATCH, as well as POST) based on RDF Patch [1]. Changes to datasets can
be calculated elsewhere and the Fuseki dataset changed. (It's quite
hard to automatically generate SPARQL Update for arbitrary changes if
there are blank nodes involved.)
Any other use cases?
Andy
[1] https://afs.github.io/rdf-delta/