Package org.roaringbitmap
Class ParallelAggregation.ContainerCollector
java.lang.Object
org.roaringbitmap.ParallelAggregation.ContainerCollector
- All Implemented Interfaces:
Collector<Map.Entry<Character,
List<Container>>, RoaringArray, RoaringBitmap>
- Enclosing class:
ParallelAggregation
public static class ParallelAggregation.ContainerCollector
extends Object
implements Collector<Map.Entry<Character,List<Container>>,RoaringArray,RoaringBitmap>
Collects containers grouped by their key into a RoaringBitmap, applying the
supplied aggregation function to each group.
-
Nested Class Summary
Nested classes/interfaces inherited from interface java.util.stream.Collector
Collector.Characteristics
-
Field Summary
Fields -
Constructor Summary
ConstructorsConstructorDescriptionContainerCollector
(Function<List<Container>, Container> reducer) Creates a collector with the reducer function. -
Method Summary
-
Field Details
-
reducer
-
-
Constructor Details
-
ContainerCollector
Creates a collector with the reducer function.- Parameters:
reducer
- a function to apply to containers with the same key.
-
-
Method Details
-
supplier
- Specified by:
supplier
in interfaceCollector<Map.Entry<Character,
List<Container>>, RoaringArray, RoaringBitmap>
-
accumulator
- Specified by:
accumulator
in interfaceCollector<Map.Entry<Character,
List<Container>>, RoaringArray, RoaringBitmap>
-
combiner
- Specified by:
combiner
in interfaceCollector<Map.Entry<Character,
List<Container>>, RoaringArray, RoaringBitmap>
-
finisher
- Specified by:
finisher
in interfaceCollector<Map.Entry<Character,
List<Container>>, RoaringArray, RoaringBitmap>
-
characteristics
- Specified by:
characteristics
in interfaceCollector<Map.Entry<Character,
List<Container>>, RoaringArray, RoaringBitmap>
-