Hi Jan,
In a way I was wonder if/when you might/would ask this question, as
we hit the same issue whilst working on our Sesame/Jena/Redland RDF
Providers and added support to the JDBC and ODBC Driver to provide
this differentiation.
This required updates to both the Virtuoso Server and JDBC/ODBC
clients, thus you would need updates for both components for this to
be possible. We are planning a new VOS 5.0.7 release either tomorrow
or Monday hopefully, so I would suggest you wait for this release
which will provide the necessary support you are seeking.
Note that the Sesame2 RDF Provider I promised you previously should
also be part of this release also ...
Best Regards
Hugh Williams
Professional Services
OpenLink Software
On 19 Jun 2008, at 17:25, Jan Stette wrote:
Hi,
I'm executing SPARQL queries through the OpenLink Virtuoso JDBC
driver. My question is: when I look at the Java ResultSet returned
after executing my query, how can I get information about what type
of node that each variable is bound to?
For example, if doing a simple query like:
sparql select distinct * where { ?subject ?predicate ?object }
Specifically, when I get the values from column "object" in the
result set, string literals, URIs and blank nodes all seem to be
returned as Strings. How can I distinguish between these cases?
And how can I distinguish between typed and untyped string literals?
Regards,
Jan
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