Coomns-RDF Proposal draft

[Reto Gmür <re...@apache.org>]

Hi all,

I've extracted what could become the RDF commons API from rdf.core to
https://svn.apache.org/repos/asf/commons/sandbox/rdf/trunk/ [*]. In the
clerezza git repo I made a branch "rdf-commons" which shall base on the new
rdf-commons.

So far I've adapted rdf.core to use rdf-commons, there are however still
some failing test relating to sparql. Maybe @Hasan could have a look at
this?

I'm still working on simplifying the API.

An open point is if we want to keep LockableMGraph or if we want to add the
locks to the core graph API. I've seen quite a lot of code struggling with
having to deal with lockable and non-lockable graph. I think things would
be easier if all graphs would provide (at least a no-op) lock.

Cheers,
Reto

* In principle it should have been possible to push it to the rdf-commons
project on git, but as it turns out there is a technical issue and some
opposition. I would like to move it to git as soon as possible, if
rdf-commons has to be kept empty for now, we should ask infra for another
repository.