net.sf.ehcache.util
Class Timestamper

java.lang.Object
  net.sf.ehcache.util.Timestamper

public final class Timestamper
extends Object

Generates increasing identifiers (in a single VM only). Not valid across multiple VMs. Yet, the identifier is based on time, so that the drifting across a cluster should not ever be large...

Author:

Alex Snaps

Field Summary

static int	BIN_DIGITS Value for left shifting System.currentTimeMillis, freeing some space for the counter
static int	ONE_MS What is one milliseconds, based on "counter value reserved space", for this Timestamper

Method Summary

static long

next() Returns an increasing unique value based on the System.currentTimeMillis() with some additional reserved space for a counter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BIN_DIGITS

public static final int BIN_DIGITS

Value for left shifting System.currentTimeMillis, freeing some space for the counter

ONE_MS

public static final int ONE_MS

What is one milliseconds, based on "counter value reserved space", for this Timestamper

Method Detail

next

public static long next()

Returns an increasing unique value based on the System.currentTimeMillis() with some additional reserved space for a counter.

Returns:

uniquely & increasing value

See Also:

BIN_DIGITS