private string GetNewValue(Net.Vpc.Upa.Field field) /* throws Net.Vpc.Upa.Exceptions.UPAException */ { Net.Vpc.Upa.Entity entity = field.GetEntity(); string idName = field.GetName(); Net.Vpc.Upa.Entity seq = entity.GetPersistenceUnit().GetEntity(Net.Vpc.Upa.Impl.PrivateSequence.ENTITY_NAME); Net.Vpc.Upa.Impl.SequenceManager sm = new Net.Vpc.Upa.Impl.EntitySequenceManager(seq); string sequenceGroup = Eval(field, this.group, "{#}"); while (true) { string nextIdString = Eval(field, this.format, sm.NextValue(name, sequenceGroup, this.initialValue, this.allocationSize)); long count = entity.GetEntityCount(new Net.Vpc.Upa.Expressions.Equals(new Net.Vpc.Upa.Expressions.Var(idName), nextIdString)); if (count == 0) { return(nextIdString); } } }