public SimpleOidGenerator(final Memento memento) {
this(memento.getPersistentSerialNumber(), memento.getTransientSerialNumber());
}
private SimpleOidGenerator(final long persistentSerialNumber, final long transientSerialNumber) {
super(new OidStringifierDirect(SerialOid.class));
ensureThatArg(persistentSerialNumber, is(greaterThan(0L)));
this.persistentSerialNumber = persistentSerialNumber;
this.transientSerialNumber = transientSerialNumber;
}