Hello,

I'm using the latest version of Fuseki checked out from the trunk (revision 
1404232), and I noticed the following issue.
I uploaded the following triples to a named graph <urn:test:foo>:

<urn:test:subj> <urn:test:pred1> _:b0;
                           <urn:test:pred2> 
"foo"^^<http://www.w3.org/2001/XMLSchema#string> .
_:b0 <urn:test:pred3> "from blank 
node"^^<http://www.w3.org/2001/XMLSchema#string> . 


I can then run this query, which will return correct results:

select * from <urn:test:foo>
where {
   <urn:test:subj> <urn:test:pred1> [
       <urn:test:pred3> ?obj 
    ].
}

It correctly returns  "from blank 
node"^^<http://www.w3.org/2001/XMLSchema#string>  bound to ?obj. However, if I 
use this same graph pattern in the following SPARQL Update script:
with <urn:test:new>
insert { <urn:test:newSubj> <urn:test:newPred> ?obj . }
using <urn:test:foo> where { 
   <urn:test:subj> <urn:test:pred1> [
            <urn:test:pred3> ?obj 
    ].
}
I would expect that the named graph <urn:test:new> would contain the following 
triple:
<urn:test:newSubj> <urn:test:newPred> "from blank 
node"^^<http://www.w3.org/2001/XMLSchema#string> 

But <urn:test:new> is empty! If I replace the [] notation with a variable (?foo 
in the following query), the Update script works correctly:
with <urn:test:new> insert {   <urn:test:newSubj> <urn:test:newPred> ?obj . }
using <urn:test:foo> where {
<urn:test:subj> <urn:test:pred1> ?foo .
 ?foo   <urn:test:pred3> ?obj .
}


I would expect both Update scripts to perform identically, since my 
understanding is that the [] notation is a shorthand for my second Update 
script with the explicit variable. Furthermore, if I run this same query in the 
0.2.4 release of Fuseki, everything works correctly - the [] notation works in 
the Update script. Is this a bug in the later versions of Fuseki? Incidentally, 
the version of Fuseki I'm using has one modification - I added the Larq 
dependency to the Fuseki pom so I could use Lucene indexing. I didn't make any 
other changes to Fuseki, so while I guess it is possible that this problem 
could be related to the addition of the Larq dependency, I highly doubt that my 
problem has to do with it.


Thank you,
Elli

Reply via email to