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

Packages that use AbstractAllGroupHeadsCollector
Package | Description
--- | ---
org.apache.lucene.search.grouping.function | Support for grouping by {org.apache.lucene.queries.function.ValueSource}.
org.apache.lucene.search.grouping.term | Support for grouping by indexed terms via {org.apache.lucene.search.FieldCache}.

### Uses of AbstractAllGroupHeadsCollector in org.apache.lucene.search.grouping.function

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

### Uses of AbstractAllGroupHeadsCollector in org.apache.lucene.search.grouping.term

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

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