OK, I see what you're trying to do. Unfortunately grouping is just not
built to support multivalued fields. The nearest thing I can think of is
"pivot faceting", but that only returns counts, not the actual documents.
Sorry I can't be more help
Erick
On Fri, May 30, 2014 at 3:44 AM, Bhoomit Vasani <bhoomit.2...@gmail.com>
wrote:
> Hi Erick,
>
> Thanks for the response.
>
> What am I trying to do? :
>
> I have a multivalued field called tags for e.g.
>
> - {
> - id: "1",
> - *tags*:["solr","lucene","facet"],
> *type*:"post"
> },
> - {
> - id: "2",
> - *tags*:["solr","multi-valued","grouping"],
> *type*:"quote"
> },
>
> .......
>
>
> Now what I want is...
> grouped:
> {
>
> - type:
> {
> - matches: 578,
> - groups:
> [
> -
> {
> - groupValue: "solr",
> - doclist:
> {
> - numFound: 365,
> - start: 0,
> - docs:
> [
> -
> {
> - id: "1",
> - *tags*:["solr","lucene","facet"],
> *type*:"post"
> },
> - {
> - id: "2",
> - *tags*:["solr","multi-valued","grouping"],
> *type*:"quote"
> },
> -
> ]
> }
> },
> - {
> - groupValue: "lucene",
> - doclist:
> {
> - numFound: 365,
> - start: 0,
> - docs:
> [
> -
> {
> - id: "1",
> - *tags*:["solr","lucene","facet"],
> *type*:"post"
> },
> ]
> }
> },...
>
>
> But when I run this
> *
> http://127.0.0.1:8983/solr/select?wt=json&group=true&group.field=tags&q=*:*
> <
> http://127.0.0.1:8983/solr/select?wt=json&group=true&group.field=tags&q=*:*
> >*
> it
> gives me error saying "*can not use FieldCache on multivalued field:
> tags*".
> It works fine on type field which is single valued.
>
> Hope the example is clear enough.
>
>
> -
>
>
>
>
>
>
> On Thu, May 29, 2014 at 3:05 AM, Erick Erickson <erickerick...@gmail.com>
> wrote:
>
> > what would "grouping on a multivalued field" mean? Count the same doc
> > separately for each value in the MV field? Use the first value?
> >
> > This seems similar to the problem of sorting on fields with more than
> > one token, any approach I can think of will be wrong.
> >
> > But this smells like an XY problem. What is the use-case you're trying
> > to support? If you tell us that there might be alternate approaches
> > that would work OOB.
> >
> > To answer your question "not that I know of".
> >
> > Best
> > Erick
> >
> > On Mon, May 26, 2014 at 11:28 PM, Bhoomit Vasani <bhoomit.2...@gmail.com
> >
> > wrote:
> > > Hi,
> > >
> > > Does latest release of solr supports grouping on a multi-valued field?
> > >
> > > According to this
> > > https://wiki.apache.org/solr/FieldCollapsing#Known_Limitations it
> > doesn't,
> > > but the doc was last updated 14 months ago...
> > >
> > > --
> > > --
> > > Thanks & Regards,
> > > Bhoomit Vasani | SE @ Mygola
> > > WE are LIVE <http://www.mygola.com/>!
> > > 91-8892949849
> >
>
>
>
> --
> --
> Thanks & Regards,
> Bhoomit Vasani | SE @ Mygola
> WE are LIVE <http://www.mygola.com/>!
> 91-8892949849
>
