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From Erick Erickson <>
Subject Re: Filtering search results
Date Mon, 21 Nov 2011 12:49:54 GMT
You might take a look at grouping, aka field collapsing. Faceting gives
you counts for various values in a field, but not a mixture of documents,
whereas grouping will return you the top N members of each group
which sounds like what you're after.


On Mon, Nov 21, 2011 at 5:04 AM, Ian Lea <> wrote:
> Running two queries is fine, as is looping through the results list.
> I don't think it is clear that one in necessarily "better" than the
> other.  Faceting generally works by looping through results because
> you typically don't know in advance what values will be present.
> --
> Ian,
> 2011/11/21 liugangc <>:
>> hi,faceted search is like group by in SQL, and also need query two time to get two
list in your situation. I think there isn't  better way to solve your problem.
>> --
>> gang liu
>> email:
>> At 2011-11-21 09:35:08,"Felipe Carvalho" <> wrote:
>>>  I'm working on a people finder app over an index built of Person
>>>documents. Among other attributes (name, gender, phone, ...) I have a
>>>hiringType attribute, which possible values are EMPLOYEE and CONSULTANT.
>>>  When I run a "name" search over these documents, I need to render two
>>>lists: employees that match the search criteria and consultants that match
>>>the criteria.
>>>  I'm running Lucene 3.4, is there a way for Lucene to hand me over those
>>>lists of documents separately on the same query?
>>>  Currently I run the query and then loop through the results, separating
>>>employees and consultants in two lists, is there a better way to do this?
>>>  A heard a colleague saying Solr supports this through "faceted search"
>>>(I'm not sure this is the right name), is there such thing on Lucene as
>>>well? (unfortunately using Solr is not an option for this app)
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