com.hazelcast.core

Interface RingbufferStore<T>

Type Parameters:

T - ring buffer item type

All Known Implementing Classes:

RingbufferStoreWrapper

public interface RingbufferStore<T>

Ringbuffer store makes a ring buffer backed by a central data store; such as database, disk, etc.

Method Summary

Modifier and Type	Method and Description
long	getLargestSequence() Return the largest sequence seen by the data store.
T	load(long sequence) Loads the value of a given sequence.
void	store(long sequence, T data) Stores one item with it's corresponding sequence.
void	storeAll(long firstItemSequence, T[] items) Stores multiple entries.

Method Detail

store

void store(long sequence,
           T data)

Stores one item with it's corresponding sequence.

Parameters:

sequence - the sequence ID of the data

data - the value of the data to store

storeAll

void storeAll(long firstItemSequence,
              T[] items)

Stores multiple entries. Implementation of this method can optimize the store operation.

Parameters:

firstItemSequence - the sequence of the first item

items - the items that are being stored

load

T load(long sequence)

Loads the value of a given sequence. Null value means that the item was not found.

Parameters:

sequence - the sequence of the requested item

Returns:

requested item, null if not found

getLargestSequence

long getLargestSequence()

Return the largest sequence seen by the data store. Can return -1 if the data store doesn't have or can't access any data.

Returns:

the largest sequence of the data in the data store