org.openmdx.kernel.id.plugin
Class TimeBasedUUIDGeneratorUsingIP4Address

java.lang.Object
  org.openmdx.kernel.id.spi.TimeBasedIdBuilder
      org.openmdx.kernel.id.spi.TimeBasedIdGenerator
          org.openmdx.kernel.id.plugin.TimeBasedUUIDGeneratorUsingIP4Address

All Implemented Interfaces:

UUIDGenerator

public class TimeBasedUUIDGeneratorUsingIP4Address
extends TimeBasedIdGenerator
implements UUIDGenerator

Time Based UUID Provider using IP 4 Address Based Nodes

This implementation follow the guidelines of http://www.ietf.org/internet-drafts/draft-mealling-uuid-urn-03.txt and avoids conflicts with TimeBasedUUIDGeneratorUsingRandomBasedNodes by setting the bit next to the MAC address multicast bit.

Constructor Summary

TimeBasedUUIDGeneratorUsingIP4Address()

Method Summary

protected long	getNode() The 48 bit node value is used to set the node field of this UUID.
UUID	next()

Methods inherited from class org.openmdx.kernel.id.spi.TimeBasedIdGenerator

getClockSequence, getRandom, getRandomBasedNode, getSystemTimeFrame, getTimeFrame, getTimestamp

Methods inherited from class org.openmdx.kernel.id.spi.TimeBasedIdBuilder

nextLeastSignificantBits, nextMostSignificantBits

Methods inherited from class java.lang.Object

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

Constructor Detail

TimeBasedUUIDGeneratorUsingIP4Address

public TimeBasedUUIDGeneratorUsingIP4Address()

Method Detail

getNode

protected long getNode()

Description copied from class: TimeBasedIdBuilder

The 48 bit node value is used to set the node field of this UUID. This field is intended to hold the IEEE 802 address of the machine that generated this UUID to guarantee spatial uniqueness.

The node id has to be provided by a subclass.

Overrides:

getNode in class TimeBasedIdGenerator

Returns:

this UUID prvider's host id.

next

public UUID next()

Specified by:

next in interface UUIDGenerator