Yes indeed,
exactly with this assembler file:
https://github.com/jmvanel/semantic_forms/blob/master/scala/jena.spatial.assembler.ttl

And, when the Jena based application is started with this same assembler
file, the spatial queries work , as said above in this thread.


Le dim. 16 déc. 2018 à 12:18, Marco Neumann <marco.neum...@gmail.com> a
écrit :

> did you create the text index with jena.textindexer
> --desc=/<path>/config.ttl?
>
>
> On Sun, Dec 16, 2018 at 8:48 AM Jean-Marc Vanel <jeanmarc.va...@gmail.com>
> wrote:
>
> > I fixed a stupid error in text index URI, resulting from pasting, in new
> > file jena.spatial+text.assembler.ttl:
> >
> >
> https://github.com/jmvanel/semantic_forms/blob/master/scala/jena.spatial%2Btext.assembler.ttl
> >
> > Now, it reads:
> > :spatial_dataset rdf:type     spatial:SpatialDataset ;
> >     rdf:type     text:TextDataset ;
> >     spatial:dataset   <#dataset> ;
> >     spatial:index     <#indexLucene> ;
> >     text:dataset   <#dataset> ;
> >     text:index    * <#indexLuceneText>* ;
> >     .
> >
> > But still it says "Failed to find the text index" .
> >
> >
> > Le dim. 16 déc. 2018 à 09:34, Jean-Marc Vanel <jeanmarc.va...@gmail.com>
> a
> > écrit :
> >
> > > So I tried a new  file jena.spatial+text.assembler.ttl with separate
> > > Lucene indices for spatial and text:
> > >
> > >
> >
> https://github.com/jmvanel/semantic_forms/blob/master/scala/jena.spatial%2Btext.assembler.ttl
> > >
> > > It defines a Dataset with both Dataset types and both Lucene indices:
> > >
> > > :spatial_dataset rdf:type     spatial:SpatialDataset ;
> > >     rdf:type     text:TextDataset ;
> > >     spatial:dataset   <#dataset> ;
> > >     spatial:index     <#indexLucene> ;
> > >     text:dataset   <#dataset> ;
> > >     text:index     <#indexLucene> ;
> > >     .
> > >
> > > Alas , when querying , it says "Failed to find the text index" :
> > >
> > > WARN  org.apache.jena.query.text.TextQueryPF - Failed to find the text
> > > index : tried context and as a text-enabled dataset
> > > WARN  org.apache.jena.query.text.TextQueryPF - No text index - no text
> > > search performed
> > >
> > > Is it because rdf:type spatial:SpatialDataset is asserted first in
> > > assembler file?
> > > So, defining a hybrid Dataset does not work anymore by TTL
> specification
> > > than by JVM code specification.
> > > I definitely need more experts' advice .
> > >
> > >
> > >
> > > Le sam. 15 déc. 2018 à 21:10, ajs6f <aj...@apache.org> a écrit :
> > >
> > >> > On Dec 15, 2018, at 9:59 AM, Marco Neumann <marco.neum...@gmail.com
> >
> > >> wrote:
> > >> >
> > >> >> *Question*: does that make sense to have a unique Lucene index for
> > >> text and
> > >> >> space ?
> > >> >> It is possible at all? If yes, is it good in terms of disk space
> and
> > >> >> performance?
> > >> >> Like this:
> > >> >> <#indexLucene> a text:TextIndexLucene ;
> > >> >>               a spatial:SpatialIndexLucene ;
> > >> >>               # etc ...
> > >>
> > >> I'm sure that would be ideal for many cases, but I'm not at all sure
> > that
> > >> the same index can answer queries of both kinds. Perhaps we can
> combine
> > >> fields from both, but are the relationships between tuple and index
> > record
> > >> the same in both cases?
> > >>
> > >> Otherwise, I know we had a conversation at some point in the past on
> one
> > >> of the lists about trying to factor out commonalities between
> > jena-spatial
> > >> and jena-text, but it didn't go very far at that time and I don't know
> > what
> > >> the intervening years have done to make it more or less feasible.
> There
> > >> have been many changes to jena-text in that time and the new spatial
> > module
> > >> is a whole new story. I'd put a link here but searching
> > lists.apache.org
> > >> hasn't brought it up for me.
> > >>
> > >> ajs6f
> > >>
> > >>
> > >
> > > --
> > > Jean-Marc Vanel
> > >
> > >
> >
> http://www.semantic-forms.cc:9111/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me#subject
> > > <
> >
> http://www.semantic-forms.cc:9111/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me
> > >
> > > Rule-based programming, Semantic Web
> > > +33 (0)6 89 16 29 52
> > > Twitter: @jmvanel , @jmvanel_fr ; chat: irc://
> irc.freenode.net#eulergui
> > >  Chroniques jardin
> > > <
> >
> http://semantic-forms.cc:1952/backlinks?q=http%3A%2F%2Fdbpedia.org%2Fresource%2FChronicle
> > >
> > >
> >
> >
> > --
> > Jean-Marc Vanel
> >
> >
> http://www.semantic-forms.cc:9111/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me#subject
> > <
> >
> http://www.semantic-forms.cc:9111/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me
> > >
> > Rule-based programming, Semantic Web
> > +33 (0)6 89 16 29 52
> > Twitter: @jmvanel , @jmvanel_fr ; chat: irc://irc.freenode.net#eulergui
> >  Chroniques jardin
> > <
> >
> http://semantic-forms.cc:1952/backlinks?q=http%3A%2F%2Fdbpedia.org%2Fresource%2FChronicle
> > >
> >
>
>
> --
>
>
> ---
> Marco Neumann
> KONA
>


-- 
Jean-Marc Vanel
http://www.semantic-forms.cc:9111/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me#subject
<http://www.semantic-forms.cc:9111/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me>
Rule-based programming, Semantic Web
+33 (0)6 89 16 29 52
Twitter: @jmvanel , @jmvanel_fr ; chat: irc://irc.freenode.net#eulergui
 Chroniques jardin
<http://semantic-forms.cc:1952/backlinks?q=http%3A%2F%2Fdbpedia.org%2Fresource%2FChronicle>

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