com.bigdata.btree

Interface ICounter

All Known Implementing Classes:

BTree.Counter, BTree.PartitionedCounter, Counter, ReadOnlyCounter

public interface ICounter

An interface for a counter. Mutable btrees expose mutable counters while read-only btrees do not. Like the mutable BTree, the mutable counter is NOT thread-safe. An unpartitioned index exposes a single counter for the entire index. A partitioned index exposes a counter per index partition and the partition identified forms the high int32 for the counter.

Version:

$Id$

Author:

Bryan Thompson

See Also:

IIndexLocalCounter.getCounter()

Method Summary

Methods

Modifier and Type	Method and Description
long	get() The current value of the counter (initially zero).
long	incrementAndGet() Increment the current value of the counter and then return its value (atomic).

Method Detail

get

long get()

The current value of the counter (initially zero).

incrementAndGet

long incrementAndGet()

Increment the current value of the counter and then return its value (atomic).