EDIT

@Inheritance(strategy=InheritanceType.SINGLE_TABLE)

public class TermVocabulary<T extends DefinedTermBase> extends TermBase implements Iterable<T> {

	private static final long serialVersionUID = 1925052321596648672L;

	private static final Logger logger = Logger.getLogger(TermVocabulary.class);

	//The vocabulary source (e.g. ontology) defining the terms to be loaded when a database is created for the first time.