Nicola Buso created LUCENE-9979:
-----------------------------------

             Summary: Implement negation of facet path in DrillDownQuery
                 Key: LUCENE-9979
                 URL: https://issues.apache.org/jira/browse/LUCENE-9979
             Project: Lucene - Core
          Issue Type: Improvement
          Components: core/search
            Reporter: Nicola Buso
         Attachments: 0001-Implement-negate-facet-path-in-DrillDownQuery.patch

Suppose the following facet values tree:

Facet
 - V1
 -- V1.1
 -- V1.2
 -- V1.3
 -- V1.4
 -- (not topK values)
 - V2
 -- V2.1
 -- V2.2
 -- V2.3
 -- V2.4
 -- (not topK values)

Use case:
1 - select V1 => all V1.x are selected
2 - de-select V1.1

The implementation of the negation of value V1.1 is missing in DrillDownQuery, 
it would be nice to implement it.



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