On Tue, Oct 25, 2016 at 6:46 PM Joel Bernstein <joels...@gmail.com> wrote:
> Because the edges are unique on the subject->object there isn't currently a
> way to capture the relationship. Aggregations can be rolled up on numeric
> fields and as Yonik mentioned you can track the ancestor.
>
> It would be fairly easy to track the relationship by adding a relationship
> array that would correspond with the ancestors array for example:
>
> {"result-set":{"docs":[
>
> {"node":"Haruka","collection":"reviews","field":"user_s","ancestors":["book1"],
> "relationships":["author"], "level":1},
> {"node":"Maria","collection":"reviews","field":"user_s","
> ancestors":["book2"], "relationships":["author"], "level":1},
> {"EOF":true,"RESPONSE_TIME":22}]}}
>
Right, that is what I am after!
>
> Joel Bernstein
> http://joelsolr.blogspot.com/
>
> On Tue, Oct 25, 2016 at 6:26 PM, Yonik Seeley <ysee...@gmail.com> wrote:
>
> > You can get the nodes that to came from by adding trackTraversal=true
> >
> > A cut'n'paste example from my Lucene/Solr Revolution slides:
> >
> > curl $URL -d 'expr=gatherNodes(reviews,
> > search(reviews, q="user_s:Yonik AND rating_i:5",
> > fl="book_s,user_s,rating_i",sort="user_s asc"),
> > walk="book_s->book_s",
> > gather="user_s",
> > fq="rating_i:[4 TO *] -user_s:Yonik",
> > trackTraversal=true )'
> >
> > {"result-set":{"docs":[
> > {"node":"Haruka","collection":"reviews","field":"user_s","
> > ancestors":["book1"],"level":1},
> > {"node":"Maria","collection":"reviews","field":"user_s","
> > ancestors":["book2"],"level":1},
> > {"EOF":true,"RESPONSE_TIME":22}]}}
> >
> > -Yonik
> >
> >
> > On Tue, Oct 25, 2016 at 5:57 PM, Grant Ingersoll <gsing...@apache.org>
> > wrote:
> > > Hi,
> > >
> > > I'm playing around with the new Graph Traversal/GatherNodes
> capabilities
> > in
> > > Solr 6. I've been indexing Yago facts (
> > > http://www.mpi-inf.mpg.de/departments/databases-and-
> > information-systems/research/yago-naga/yago/downloads/)
> > > which give me triples of something like subject-relationship-object
> > (United
> > > States -> hasCapital -> Washington DC)
> > >
> > > My documents look like:
> > > subject: string
> > > relationship: string
> > > object: string
> > >
> > > I can do a simple gatherNodes like
> > > http://localhost:8983/solr/default/graph?expr=gatherNodes(default,
> > > walk="United_States->subject", gather="object") and get back the
> objects
> > > that relate to the subject. However, I don't see any way to capture
> what
> > > the relationship is in the response. IOW, the request above would just
> > > return a node of "Washington DC", but it doesn't tell me the
> relationship
> > > (i.e. I'd like to get Wash DC and hasCapital back somehow). Is there
> > > anyway to expand the "gather" or otherwise mark up the nodes returned
> > with
> > > additional field attributes or maybe get additional graph info back?
> > >
> > > Thanks,
> > > Grant
> >
>
