Hi Joel,
I thought about using a PostFilter, but the problem is that the 'scale'
function must be done after all matching docs have been scored but before
adding them to the PriorityQueue that sorts just the rows to be returned.
Doing the 'scale' function wrapped in a 'query' is proving to be too slow
when it visits every document in the index.
In the Collector, I can see how to get the field values like this:
indexSearcher.getSchema().getField("field(myfield").getType().getValueSource(SchemaField,
QParser).getValues()
But, 'getValueSource' needs a QParser, which isn't available.
And I can't create a QParser without a SolrQueryRequest, which isn't
available.
Thanks,
Peter
On Wed, Dec 11, 2013 at 1:48 PM, Joel Bernstein <joels...@gmail.com> wrote:
> Peter,
>
> It sounds like you could achieve what you want to do in a PostFilter rather
> then extending the TopDocsCollector. Is there a reason why a PostFilter
> won't work for you?
>
> Joel
>
>
> On Tue, Dec 10, 2013 at 3:24 PM, Peter Keegan <peterlkee...@gmail.com
> >wrote:
>
> > Quick question:
> > In the context of a custom collector, how does one get the values of a
> > field of type 'ExternalFileField'?
> >
> > Thanks,
> > Peter
> >
> >
> > On Tue, Dec 10, 2013 at 1:18 PM, Peter Keegan <peterlkee...@gmail.com
> > >wrote:
> >
> > > Hi Joel,
> > >
> > > This is related to another thread on function query matching (
> > >
> >
> http://lucene.472066.n3.nabble.com/Function-query-matching-td4099807.html#a4105513
> > ).
> > > The patch in SOLR-4465 will allow me to extend TopDocsCollector and
> > perform
> > > the 'scale' function on only the documents matching the main dismax
> > query.
> > > As you mention, it is a slightly intrusive design and requires that I
> > > manage my own PriorityQueue (and a local duplicate of HitQueue), but
> > should
> > > work. I think a better design would hide the PQ from the plugin.
> > >
> > > Thanks,
> > > Peter
> > >
> > >
> > > On Sun, Dec 8, 2013 at 5:32 PM, Joel Bernstein <joels...@gmail.com>
> > wrote:
> > >
> > >> Hi Peter,
> > >>
> > >> I've been meaning to revisit configurable ranking collectors, but I
> > >> haven't
> > >> yet had a chance. It's on the shortlist of things I'd like to tackle
> > >> though.
> > >>
> > >>
> > >>
> > >> On Fri, Dec 6, 2013 at 4:17 PM, Peter Keegan <peterlkee...@gmail.com>
> > >> wrote:
> > >>
> > >> > I looked at SOLR-4465 and SOLR-5045, where it appears that there is
> a
> > >> goal
> > >> > to be able to do custom sorting and ranking in a PostFilter. So far,
> > it
> > >> > looks like only custom aggregation can be implemented in PostFilter
> > >> (5045).
> > >> > Custom sorting/ranking can be done in a pluggable collector (4465),
> > but
> > >> > this patch is no longer in dev.
> > >> >
> > >> > Is there any other dev. being done on adding custom sorting (after
> > >> > collection) via a plugin?
> > >> >
> > >> > Thanks,
> > >> > Peter
> > >> >
> > >>
> > >>
> > >>
> > >> --
> > >> Joel Bernstein
> > >> Search Engineer at Heliosearch
> > >>
> > >
> > >
> >
>
>
>
> --
> Joel Bernstein
> Search Engineer at Heliosearch
>
