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From "Martijn Laarman (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-2553) Nested Field Collapsing
Date Fri, 27 May 2011 21:33:47 GMT
Nested Field Collapsing
-----------------------

                 Key: SOLR-2553
                 URL: https://issues.apache.org/jira/browse/SOLR-2553
             Project: Solr
          Issue Type: Improvement
          Components: SearchComponents - other
            Reporter: Martijn Laarman


Currently specifying grouping on multiple fields returns multiple datasets. 

It would be nice if Solr supported cascading / nested grouping by applying the first group
over the entire result set, the next over each group and so forth and so forth. 

Even if limited to supporting nesting grouping 2 levels deep would cover alot of use cases.


group.field=location&group.field=type

-Location X
---Type 1
-----documents
---Type 2
----documents
-Location Y
---Type 1
----documents
---Type 2
----documents

instead of 
-Location X
-- documents
-Location Y
--documents

-Type 1
--documents
-Type2
--documents


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