Re: [Fwd: RDF2Go 3.1 released - A wrapper over Java triple stores]

From: Stefano Mazzocchi <>
Date: Thu, 09 Mar 2006 14:24:40 -0800

Seaborne, Andy wrote:
> -------- Original Message --------
>> From: Stefano Mazzocchi <>
>> Date: 9 March 2006 17:14
>> Came across RDF2Go today, basically a JDBC-like layer for RDF triple
>> stores in java, which would allow us to be triple-store neutral and
>> allow easier performance testing across various containers.
>> Has anybody tried it? Are there severe performance drawbacks?
> Sorry not tried it in - but the javadoc says it does work at the Jena
> Graph level (the lower level interface) which is the right place to hook
> in.


> It's a object-copying adapter, converting to it's object model
> (, blank node, it's own literal implementations). Blank
> nodes wrap the underlying system blank node - amusing way to do it.
> An alternative store abstraction is to use SPARQL (QL and protocol)
> which would then work for non-Java stores as well.

sure, but I wonder how much the the cost of network transmission (even
on localhost), resulset serialization/parsing and object model creation
would impact our operations.

> seeAlso: There is project to do a JDBC driver for SPARQL (SPARQL4j) on
> SourceForge.
> (despite being named on the
> project, I'm not active).

nice. Do you know how active the project is? seems pretty much dead from

Stefano Mazzocchi
Research Scientist                 Digital Libraries Research Group
Massachusetts Institute of Technology            location: E25-131C
77 Massachusetts Ave                   telephone: +1 (617) 253-1096
Cambridge, MA  02139-4307              email: stefanom at mit . edu
Received on Thu Mar 09 2006 - 22:24:41 EST

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