io.prestosql.util

Interface Mergeable<T>

All Known Implementing Classes:

ExchangeClientStatus, HashCollisionPlanNodeStats, HashCollisionsInfo, JoinOperatorInfo, LocalExchangeBufferInfo, PartitionedOutputOperator.PartitionedOutputInfo, PlanNodeStats, TableWriterOperator.TableWriterInfo, WindowInfo, WindowPlanNodeStats

public interface Mergeable<T>

Method Summary

Modifier and Type	Method and Description
static <T extends Mergeable<T>> Optional<T>	merge(Optional<T> first, Optional<T> second)
T	mergeWith(T other) Merges the current state with the state of the other instance, and returns the merged state.

Method Detail

mergeWith

T mergeWith(T other)

Merges the current state with the state of the other instance, and returns the merged state.

Throws:

NullPointerException - if other is null

merge

static <T extends Mergeable<T>> Optional<T> merge(Optional<T> first,
                                                  Optional<T> second)