Hello Rob Should now be fixed, build from latest Trunk or wait 24 hrs or so for the > snapshot to get build and deployed by the Apache build server >
* THANKS a million * ! I'm running a couple of experiments for my PhD thesis, and was getting the excuses done, for that bug messed up part of my data. Now I can get everything right. Thanks, thanks. > What version of ARQ are you using to do the OpAsQuery? I assume > 2.10.1-SNAPSHOT since turning this type of query from its algebra back > into a query only very recently became possible. Previously the BIND > would have been lost completely when converting back from an algebra to a > query. > The jar file says "2.10.0", I just downloaded the latest stable version. > Also is there a reason you are using ARQ 2.8.8 in your system? That's > very out of date (about 2 years so) now. > well, I'm running this experiment for one year and two months now, and just copied the binaries and stuff that were working. TLDR: lazy. anyway, 2.10.0 ARQ yielded the same error. However, should defining an alias on the query head allow referring to it elsewhere? Are alias and BINDs really equivalent? MySQL have this behaviour, but not Oracle. Thanks (again). dfcp > Andy - The report states that the query is passed off to a system running > 2.8.8, even with this fix did ARQ support BIND syntax that far back? I.e. > will this fix just move the error elsewhere? > > Rob > > > > On 4/1/13 12:42 PM, "Andy Seaborne" <[email protected]> wrote: > > >Hi there, > > > >Thanks for the report. I've captured this as: > > > >https://issues.apache.org/jira/browse/JENA-429 > > > > Andy > > > >On 31/03/13 21:11, Diogo FC Patrao wrote: > >> Hello > >> > >> I was performing a simple test with OpAsQuery: > >> > >> Here is the original query: > >> > >> PREFIX : <http://www.cipe.accamargo.org.br/ontologias/h2tc.owl#> > >> PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> > >> PREFIX mylib: <java:dateadd.lib.pkgfor.arq.> > >> > >> SELECT ?yearmonth ( count(?document) as ?total ) > >> WHERE > >> { > >> ?document a :Document; > >> :documentDateOfCreation ?date ; > >> :documentType "exam results" . > >> BIND( mylib:DateFormat( xsd:string(?date), "yyyy-MM" ) as > >> ?yearmonth ) > >> } group by ?yearmonth > >> > >> Then I ran the code below, that compile the algebra then render the > >>query > >> again. > >> > >> Query query = QueryFactory.create( that_query_above, > >> Syntax.syntaxSPARQL_11); > >> > >> Op op = Algebra.compile(query); > >> > >> System.out.println(OpAsQuery.asQuery(op)); > >> > >> The result is below: > >> > >> SELECT (<java:dateadd.lib.pkgfor.arq.DateFormat>(< > >> http://www.w3.org/2001/XMLSchema#string>(?date), "yyyy-MM") AS > >>?yearmonth) > >> (count(?document) AS ?total) > >> > >> WHERE > >> > >> { ?document <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> < > >> http://www.cipe.accamargo.org.br/ontologias/h2tc.owl#Document> . > >> > >> ?document < > >> > >> > http://www.cipe.accamargo.org.br/ontologias/h2tc.owl#documentDateOfCreati > >>on> > >> ?date . > >> > >> ?document < > >> http://www.cipe.accamargo.org.br/ontologias/h2tc.owl#documentType> > "exam > >> results" > >> > >> } > >> > >> GROUP BY ?yearmonth > >> > >> However, this is not a valid query; notice that the BIND has gone, it > >> somehow turned to a alias on query's head. > >> > >> ARQ 2.8.8. upon receiving this query, yields the error: > >> > >> Variable used when already in-scope: ?yearmonth in > >> (<java:dateadd.lib.pkgfor.arq.DateFormat>(xsd:string(?date), "yyyy-MM") > >>AS > >> ?yearmonth) > >> > >> Is that a bug on ARQ or OpAsQuery? Or anything else? > >> > >> Thanks! > >> > >> -- > >> diogo patrão > >> > > > >
