Facets for Child Documents?

["Edwards, Joshua" <Jo...@capitalone.com>]

Is it possible to use a facet to filter parent documents based on a child field?  For example, if I have Authors as my main record, and Books as the child record, would it be possible to have a facet that filtered Authors by Book publication date (with publication date existing on the Book document, but not directly on the Author document)?

Thanks,
Josh Edwards
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Re: Facets for Child Documents?

[Oleg Savrasov <os...@griddynamics.com>]

Hi Joshua,

The functionality you are asking about is requested by
https://issues.apache.org/jira/browse/SOLR-5743.
I've prepared a patch with initial implementation and going to speak about
it on Lucene/Solr Revolution 2014 Conference, held in Washington, DC on
November 11-14, http://lucenerevolution.org/.
Please see 'Faceting with Lucene BlockJoinQuery'  talk announcement in
Internals Sessions.
You are very welcome to join the conference and participate in discussion.
Your vote for https://issues.apache.org/jira/browse/SOLR-5743 would also be
match appreciated.

Thank you,
=====
Dr Oleg Savrasov,
Community Coordinator,
Grid Dynamics Search team

2014-10-10 20:32 GMT+04:00 atawfik <co...@gmail.com>:

> Yes. One way is using a join query to link authors to books. The query will
> look like this:
>
> q={!join to=author_id_fk to=author_id} publication_date:[...]
>
>
> The other way is using grouping. Here, you first retrieved books based
> their
> publication then group them on their authors.
>
>
>
> --
> View this message in context:
> http://lucene.472066.n3.nabble.com/Facets-for-Child-Documents-tp4163592p4163751.html
> Sent from the Solr - User mailing list archive at Nabble.com.
>

Re: Facets for Child Documents?

[atawfik <co...@gmail.com>]

Yes. One way is using a join query to link authors to books. The query will
look like this:

q={!join to=author_id_fk to=author_id} publication_date:[...]


The other way is using grouping. Here, you first retrieved books based their
publication then group them on their authors.



--
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