io.druid.query.groupby.epinephelinae

Interface Grouper.KeySerdeFactory<T>

Enclosing interface:

Grouper<KeyType>

public static interface Grouper.KeySerdeFactory<T>

Method Summary

Modifier and Type	Method and Description
Grouper.KeySerde<T>	factorize() Create a new KeySerde, which may be stateful.
Comparator<T>	objectComparator() Return an object that knows how to compare two serialized key instances.

Method Detail

factorize

Grouper.KeySerde<T> factorize()

Create a new KeySerde, which may be stateful.

objectComparator

Comparator<T> objectComparator()

Return an object that knows how to compare two serialized key instances. Will be called by the Grouper.iterator(boolean) method if sorting is enabled.

Returns:

comparator for key objects.