Jena ARQ to HBase Scan

Hi All:

I’m trying to extend the ARQ execution so it can convert SPARQL query to Hbase “scan" operation. But after reading the document(http://jena.sourceforge.net/ARQ/arq-query-eval.html) and example(src-examples/arq.examples.engine.MyQueryEngine), I still can’t figure out where should I write my code to turn the SPARQL query (or SPARQL algebra) into Hbase query.

And I’v also read the source code of D2RQ, but it uses the old version Jena framework which has a lot of difference compare to the latest version.

So anyone can give me some hints how to extend the ARQ execution correctly? Is there any good document or source code that I should look into?

Thank you,
Shijie