org.datanucleus.store.valuegenerator
Class UUIDGenerator

java.lang.Object
  org.datanucleus.store.valuegenerator.AbstractGenerator
      org.datanucleus.store.valuegenerator.AbstractUIDGenerator
          org.datanucleus.store.valuegenerator.UUIDGenerator

All Implemented Interfaces:

ValueGenerator

public class UUIDGenerator
extends AbstractUIDGenerator

Value generator for a UUID utilising the JDK UUID class (128-bit, 36 character). Results in Strings of length 36 characters, like "2cdb8cee-9134-453f-9d7a-14c0ae8184c6".

Field Summary

Fields inherited from class org.datanucleus.store.valuegenerator.AbstractGenerator

allocationSize, block, initialValue, LOCALISER, name, properties, repositoryExists

Constructor Summary

UUIDGenerator(java.lang.String name, java.util.Properties props)
Constructor.

Method Summary

protected java.lang.String

getIdentifier() Create an identifier with the form "2cdb8cee-9134-453f-9d7a-14c0ae8184c6".

Methods inherited from class org.datanucleus.store.valuegenerator.AbstractUIDGenerator

getStorageClass, reserveBlock

Methods inherited from class org.datanucleus.store.valuegenerator.AbstractGenerator

allocate, createRepository, current, currentValue, getName, next, nextValue, obtainGenerationBlock, obtainGenerationBlock, repositoryExists, requiresRepository, reserveBlock

Methods inherited from class java.lang.Object

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

Constructor Detail

UUIDGenerator

public UUIDGenerator(java.lang.String name,
                     java.util.Properties props)

Constructor.

Parameters:

name - Symbolic name for this generator

props - Properties controlling its behaviour

Method Detail

getIdentifier

protected java.lang.String getIdentifier()

Create an identifier with the form "2cdb8cee-9134-453f-9d7a-14c0ae8184c6".

Specified by:

getIdentifier in class AbstractUIDGenerator

Returns:

The identifier