[eclipselink-users] JPA CustomSequencing - uuid

[amerigo5 <amerigo5@xxxxxxxxxxx>]

Anyone been able to make this work:
http://wiki.eclipse.org/EclipseLink/Examples/JPA/CustomSequencing

I've followed the instruction in the above link but I am getting this error:

Exception [EclipseLink-28014] (Eclipse Persistence Services - 1.0.1 (Build
20080905)): org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Exception was thrown while processing property
[eclipselink.session.customizer] with value
[eclipselink.example.UUIDSequence].
Internal Exception: java.lang.InstantiationException:
eclipselink.example.UUIDSequence
        at
org.eclipse.persistence.exceptions.EntityManagerSetupException.failedWhileProcessingProperty(EntityManagerSetupException.java:178)
        at
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.processSessionCustomizer(EntityManagerSetupImpl.java:1222)
        at
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.updateServerSession(EntityManagerSetupImpl.java:1198)
        at
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:237)
        at
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:69)
        at
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:118)
        at
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:112)
        at
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:100)

Am I missing something here?  Thanks.
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