[JENA-422] SERVICE execution does not propogate BINDs within the SERVICE clause

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Jena 2.10.0
• Fix Version/s: Jena 2.10.1
• Component/s: ARQ
• Labels: federation service sparql
• Assignee: Rob Vesse
• Reporter: Rob Vesse
• Created: 25/Mar/13 19:33
• Updated: 28/May/13 17:37
• Resolved: 25/Mar/13 21:23

Description

This was originally spotted thanks to a user question at http://answers.semanticweb.com/questions/21759/using-bind-and-service-in-fuseki

The basic problem described there is that a BIND used within a SERVICE clause appeared to have no effect.

I was able to reproduce this with a minimal Fuseki setup using an in-memory dataset containing a single triple and the following query:

SELECT * WHERE { SERVICE <http://localhost:3030/ds/query>

{ ?s ?p ?o . BIND(?o AS ?x) }

}

I have a unit test for Fuseki that demonstrates the behaviour as well. Under the debugger I can see that the BIND clause is not included in the query string that gets sent to the remote service hence the lack of values for the BINDed variable.