# org.apache.lucene.search.grouping

## Classes

- AbstractAllGroupHeadsCollector
- AbstractAllGroupHeadsCollector.GroupHead
- AbstractAllGroupsCollector
- AbstractDistinctValuesCollector
- AbstractDistinctValuesCollector.GroupCount
- AbstractFirstPassGroupingCollector
- AbstractGroupFacetCollector
- AbstractGroupFacetCollector.FacetEntry
- AbstractGroupFacetCollector.GroupedFacetResult
- AbstractGroupFacetCollector.SegmentResult
- AbstractSecondPassGroupingCollector
- BlockGroupingCollector
- CollectedSearchGroup
- GroupDocs
- GroupingSearch
- SearchGroup
- TopGroups

## Enums

- TopGroups.ScoreMergeMode