[jira] [Created] (LUCENE-5022) Add FacetResult.mergeHierarchies

["Shai Erera (JIRA)" <ji...@apache.org>]

Shai Erera created LUCENE-5022:
----------------------------------

             Summary: Add FacetResult.mergeHierarchies
                 Key: LUCENE-5022
                 URL: https://issues.apache.org/jira/browse/LUCENE-5022
             Project: Lucene - Core
          Issue Type: New Feature
          Components: modules/facet
            Reporter: Shai Erera
            Assignee: Shai Erera
            Priority: Minor


When you DrillSideways on a hierarchical dimension, and especially when you OR multiple drill-downs together, you get several FacetResults back, one for each category you drill down on. So for example, if you want to drill-down on Date/2010 OR Date/2011/May, the FacetRequests that you need to create (to get the sideways effect) are: Date/, Date/2010, Date/2011 and Date/2011/May. Date/ is because you want to get sideways counts as an alternative to Date/2010, and Date/2011 in order to get months count as an alternative to Date/2011/May.

That results in 4 FacetResult objects. Having a utility which merges all FacetResults of the same dimension into a single hierarchical one will be very useful for e.g. apps that want to display the hierarchy. I'm thinking of FacetResult.mergeHierarchies which takes a List<FacetResult> and returns the merged ones, one FacetResult per dimension.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org