Package org.eclnt.util.valuemgmt

Class UniqueIdCreator

java.lang.Object

org.eclnt.util.valuemgmt.UniqueIdCreator

public class UniqueIdCreator
extends Object

Utility class for creating unique ids.

Constructor Summary

Constructors

Constructor	Description
UniqueIdCreator()

Method Summary

Modifier and Type	Method	Description
static long	createCounter()	Increases the process counter that is used in createId().
static String	createId()	Creates a unique id based on a prefix which is built one time per process.
static String	createRandomId()	Creates a unique id based on current time stamp, random number and process counter.
static String	createUUID()	Creates a UUID according to UUID management of Java 1.7.

Methods inherited from class java.lang.Object

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

Constructor Details

UniqueIdCreator

public UniqueIdCreator()

Method Details

createId

public static String createId()

Creates a unique id based on a prefix which is built one time per process. The prefix consists out of the current timestamp and a random value. Values are then created by adding a counter. This id is a counted if and must NOT be used for any purpose demanding some unique id that is not predictable!

createRandomId

public static String createRandomId()

Creates a unique id based on current time stamp, random number and process counter.

createCounter

public static long createCounter()

Increases the process counter that is used in createId().

createUUID

public static String createUUID()

Creates a UUID according to UUID management of Java 1.7. The result is a 36 char long UUID following the common UUID format for 128bit based UUIDs.

If Java 1.7 is not available then the method createRandomId() is used for creating the id.