R2RML implementation in XSPARQL

Dear WG members,

XSPARQL is a transformation language between heterogeneous sources (XML and RDF) and recently I have been working on implementing access to relational databases. The syntax of XSPARQL is based on XQuery with the necessary extensions for RDF and RDB (further information can be found in our webpage [1] or simply contact me).

Using XSPARQL I have implemented the R2RML mapping language (full program is available at [2]) and will be working on the Direct mapping. You can download the RDB version of XSPARQL from [3] and find a short description of how to run the transformations at [4]. A more in-depth paper describing the algorithm is at [5].

During this process I updated the relevant test-cases to work with the latest R2ML syntax (coordinating with Boris).

If you have any questions or find any problems please let me know.

best regards,
--
Nuno Lopes

[1] http://xsparql.deri.org/
[2] http://xsparql.deri.org/downloads/rdb2rdf.xsparql
[3] http://xsparql.deri.org/downloads/xsparql-rdb-0.3-SNAPSHOT.jar
[4] http://xsparql.deri.org/rdb2rdf
[5] http://xsparql.deri.org/downloads/xsparql-rdb.pdf