com.hazelcast.internal.util.hashslot

Interface HashSlotArray8byteKey

All Superinterfaces:

Disposable, HashSlotArray

All Known Implementing Classes:

HashSlotArray8byteKeyImpl, HashSlotArray8byteKeyNoValue

public interface HashSlotArray8byteKey
extends HashSlotArray

Specialization of HashSlotArray to the case where the key is a single long value and the value part is a block whose size is a multiple of 8 (including zero).

Method Summary

Modifier and Type	Method and Description
HashSlotCursor8byteKey	cursor() Returns a cursor over all assigned slots in this array.
SlotAssignmentResult	ensure(long key) Ensures that there is a mapping from the given key to a slot in the array.
long	get(long key) Returns the address of the value block mapped by the given key.
boolean	remove(long key) Removes the mapping for the given key.

Methods inherited from interface com.hazelcast.internal.util.hashslot.HashSlotArray

address, capacity, clear, expansionThreshold, gotoAddress, gotoNew, size, trimToSize

Methods inherited from interface com.hazelcast.nio.Disposable

dispose

Method Detail

ensure

SlotAssignmentResult ensure(long key)

Ensures that there is a mapping from the given key to a slot in the array. The returned object contains the slot value block address and whether a new slot had to be assigned. The hash slot array implementation keeps a reference to the returned object and will always return the same instance, albeit with updated fields on each new invocation. This means the returned object is valid until the next invocation of this method.

Parameters:

key - the key

Returns:

the value block assignment result

get

long get(long key)

Returns the address of the value block mapped by the given key.

Parameters:

key - the key

Returns:

address of the value block or MemoryAllocator.NULL_ADDRESS if no mapping for key exists.

remove

boolean remove(long key)

Removes the mapping for the given key.

Parameters:

key - the key

Returns:

true if a mapping existed and was removed, false otherwise

cursor

HashSlotCursor8byteKey cursor()

Returns a cursor over all assigned slots in this array.