Hi, I am working on updating Parliament to ARQ 2.8.7 from 2.8.5. I've noticed that there are now two parallel SPARQL/Update mechanisms [1]. I'm guessing the "submission" package refers to the SPARQL Update member submission [2] and "request" is the new support added for the SPARQL 1.1 Update working draft [3]?
I'd like to implement the new mechanism for Parliament. Previously, I was able to subclass UpdateProcessorVisitor (now UpdateProcessorSubmissionVisitor) in order to provide my own implementation for certain methods. As an example, Parliament is implemented as a collection of triple stores, so it can safely read from one graph while writing to another one (and thus avoid buffering all statements in an ArrayList). Also ARQ currently stores all WHERE clause bindings in a ArrayList during an insert/delete operation, but I would like to make this more memory efficient for large updates by serializing bindings to disk in a temporary file (after it passes a threshold). With an eye towards not copying a lot of ARQ code into my codebase, would it be possible to change the class access modifier of com.hp.hpl.jena.sparql.modify.UpdateEngineWorker to public instead of package-private and make some of the private methods protected instead (also com.hp.hpl.jena.sparql.modify.NodeTransformBNodesToVariables)? Thanks, Stephen P.S. I note that the following SPARQL/Update functions are specified in your implementation/grammar: ADD, MOVE, COPY. However I don't see them in the latest working draft [3]. Presumably they are coming in the future? [1] "com.hp.hpl.jena.sparql.modify.request" and "com.hp.hpl.jena.sparql.modify.submission" [2] http://www.w3.org/Submission/SPARQL-Update/ [3] http://www.w3.org/TR/sparql11-update/
