## Hierarchy For All Packages

Package Hierarchies:
  org.apache.lucene.search.grouping, org.apache.lucene.search.grouping.function, org.apache.lucene.search.grouping.term

## Class Hierarchy

- java.lang.Object
  - org.apache.lucene.search.grouping.AbstractAllGroupHeadsCollector.GroupHead<GROUP_VALUE_TYPE>
    - org.apache.lucene.search.grouping.function.FunctionAllGroupHeadsCollector.GroupHead
  - org.apache.lucene.search.grouping.AbstractAllGroupHeadsCollector.TemporalResult
  - org.apache.lucene.search.grouping.AbstractDistinctValuesCollector.GroupCount<GROUP_VALUE_TYPE>
    - org.apache.lucene.search.grouping.function.FunctionDistinctValuesCollector.GroupCount
    - org.apache.lucene.search.grouping.term.TermDistinctValuesCollector.GroupCount
  - org.apache.lucene.search.grouping.AbstractGroupFacetCollector.FacetEntry
  - org.apache.lucene.search.grouping.AbstractGroupFacetCollector.GroupedFacetResult
  - org.apache.lucene.search.grouping.AbstractGroupFacetCollector.SegmentResult
  - org.apache.lucene.search.grouping.AbstractSecondPassGroupingCollector.SearchGroupDocs<GROUP_VALUE_TYPE>
  - org.apache.lucene.search.Collector
    - org.apache.lucene.search.grouping.AbstractAllGroupHeadsCollector<GH>
      - org.apache.lucene.search.grouping.function.FunctionAllGroupHeadsCollector
      - org.apache.lucene.search.grouping.term.TermAllGroupHeadsCollector<GH>
    - org.apache.lucene.search.grouping.AbstractAllGroupsCollector<GROUP_VALUE_TYPE>
      - org.apache.lucene.search.grouping.function.FunctionAllGroupsCollector
      - org.apache.lucene.search.grouping.term.TermAllGroupsCollector
    - org.apache.lucene.search.grouping.AbstractDistinctValuesCollector<GC>
      - org.apache.lucene.search.grouping.function.FunctionDistinctValuesCollector
      - org.apache.lucene.search.grouping.term.TermDistinctValuesCollector
    - org.apache.lucene.search.grouping.AbstractFirstPassGroupingCollector<GROUP_VALUE_TYPE>
      - org.apache.lucene.search.grouping.function.FunctionFirstPassGroupingCollector
      - org.apache.lucene.search.grouping.term.TermFirstPassGroupingCollector
    - org.apache.lucene.search.grouping.AbstractGroupFacetCollector
      - org.apache.lucene.search.grouping.term.TermGroupFacetCollector
    - org.apache.lucene.search.grouping.AbstractSecondPassGroupingCollector<GROUP_VALUE_TYPE>
      - org.apache.lucene.search.grouping.function.FunctionSecondPassGroupingCollector
      - org.apache.lucene.search.grouping.term.TermSecondPassGroupingCollector
    - org.apache.lucene.search.grouping.BlockGroupingCollector
  - org.apache.lucene.search.grouping.GroupDocs<GROUP_VALUE_TYPE>
  - org.apache.lucene.search.grouping.GroupingSearch
  - org.apache.lucene.search.grouping.SearchGroup<GROUP_VALUE_TYPE>
    - org.apache.lucene.search.grouping.CollectedSearchGroup<T>
  - org.apache.lucene.search.grouping.TopGroups<GROUP_VALUE_TYPE>

## Enum Hierarchy

- java.lang.Object
  - java.lang.Enum<E> (implements java.lang.Comparable<T>, java.io.Serializable)
    - org.apache.lucene.search.grouping.TopGroups.ScoreMergeMode

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