Hi Jérôme,
first of all, thanks for helping out testing the LARQ 0.2.2-incubating-SNAPSHOT
and for your patience. ;-)

This hopefully will help to spot problems early one and reduce problems once ARQ
and LARQ are released within Apache.

Jérôme wrote:
> Hi,
> 
> i've recently made an svn up on my LARQ directory.
> 
> Now, my LARQ queries return 0 solution (they returned before).
> 
> I'm using:
> - fuseki 0.2.1-SNAPSHOT
> -arq 2.8.9-SNAPSHOT
> -larq 0.2.2-incubating-SNAPSHOT

According to the LARQ's pom.xml file [1], LARQ 0.2.2-incubating-SNAPSHOT now
depends on the new ARQ SNAPSHOTs.
Precisely, it depends on org.apache.jena:jena-arq:2.8.9-incubating-SNAPSHOT
Please note the new groupId and artifactId for ARQ.

New ARQ SNAPSHOTs are available here [2].

 [1] https://svn.apache.org/repos/asf/incubator/jena/Jena2/LARQ/trunk/pom.xml
 [2] 
https://repository.apache.org/content/repositories/snapshots/org/apache/jena/jena-arq/2.8.9-incubating-SNAPSHOT/

> -lucene 3.1.0
> 
> My config.ttl file has not changed:
> 
> [...]
> <#books>    rdf:type ja:RDFDataset ;
>     rdfs:label "Books" ;
>     ja:defaultGraph
>       [ rdfs:label "discours_de_la_methode.rdf" ;
>         a ja:MemoryModel ;
>         ja:content [ja:externalContent <file:Data/file.rdf> ] ;
>       ] ;
>     .
> 
> <#dataset> rdf:type      tdb:DatasetTDB ;
>     tdb:location "/tmp/tdb" ;
>     ja:textIndex "/tmp/lucene" ;
>     # Query timeout on this dataset (milliseconds)
>     ja:context [ ja:cxtName "arq:queryTimeout" ;  ja:cxtValue "1000" ] ;
> ##      tdb:unionDefaultGraph true ;
> 
> 
> Before running the fuseki server, i build my triple store with the
> command-line:
> java -cp target/fuseki-0.2.1-SNAPSHOT-sys.jar tdb.tdbloader
> --loc=/tmp/tdb Data/file.rdf

Can you please try:

 - stop Fuseki
 - delete /tmp/lucence
 - restart Fuseki

LARQ will now behave like this:

 - if the directory exists with a Lucene index, it will leave it untouched
 - if the directory does not exists it will create it and index your data

What do you have in your /tmp/lucene directory?

> So, i've no error - juste 0 result...
> 
> Any ideas?
> 
> Thank you.
> 

Let us know how it goes,
Paolo

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