## Uses of Class
org.apache.lucene.search.grouping.AllGroupHeadsCollector

- Packages that use AllGroupHeadsCollector
  Package | Description
  --- | ---
  org.apache.lucene.search.grouping | Grouping.
  org.apache.lucene.search.grouping.function | Support for grouping by `ValueSource`.
  org.apache.lucene.search.grouping.term | Support for grouping by indexed terms via `DocValues`.

- - ### Uses of AllGroupHeadsCollector in org.apache.lucene.search.grouping

    Methods in org.apache.lucene.search.grouping that return AllGroupHeadsCollector
    Modifier and Type | Method and Description
    --- | ---
    `abstract AllGroupHeadsCollector<T>` | Grouper.`getGroupHeadsCollector(Sort sort)` Create an `AllGroupHeadsCollector`

  - ### Uses of AllGroupHeadsCollector in org.apache.lucene.search.grouping.function

    Subclasses of AllGroupHeadsCollector in org.apache.lucene.search.grouping.function
    Modifier and Type | Class and Description
    --- | ---
    `class` | `FunctionAllGroupHeadsCollector` An implementation of `AllGroupHeadsCollector` for retrieving the most relevant groups when grouping by `ValueSource`.

    Methods in org.apache.lucene.search.grouping.function that return AllGroupHeadsCollector
    Modifier and Type | Method and Description
    --- | ---
    `AllGroupHeadsCollector<MutableValue>` | FunctionGrouper.`getGroupHeadsCollector(Sort sort)`

  - ### Uses of AllGroupHeadsCollector in org.apache.lucene.search.grouping.term

    Subclasses of AllGroupHeadsCollector in org.apache.lucene.search.grouping.term
    Modifier and Type | Class and Description
    --- | ---
    `class` | `TermAllGroupHeadsCollector` A base implementation of `AllGroupHeadsCollector` for retrieving the most relevant groups when grouping on a string based group field.

    Methods in org.apache.lucene.search.grouping.term that return AllGroupHeadsCollector
    Modifier and Type | Method and Description
    --- | ---
    `static AllGroupHeadsCollector<BytesRef>` | TermAllGroupHeadsCollector.`create(String groupField, Sort sortWithinGroup)` Creates an `AbstractAllGroupHeadsCollector` instance based on the supplied arguments.
    `static AllGroupHeadsCollector<BytesRef>` | TermAllGroupHeadsCollector.`create(String groupField, Sort sortWithinGroup, int initialSize)` Creates an `AbstractAllGroupHeadsCollector` instance based on the supplied arguments.
    `AllGroupHeadsCollector<BytesRef>` | TermGrouper.`getGroupHeadsCollector(Sort sort)`

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