public class BaseRepositoryImpl<T, ID extends Serializable> extends SimpleJpaRepository<T, ID> implements BaseRepository<T, ID> {

	private final EntityManager entityManager;

	public BaseRepositoryImpl(Class<T> domainClass, EntityManager entityManager) {
		super(domainClass, entityManager);
		this.entityManager = entityManager;
	}

	public List<T> findAll(Specification<T> spec, int offset, int maxResults) {
		return findAll(spec, offset, maxResults, null);
	}

	public List<T> findAll(Specification<T> spec, int offset, int maxResults, Sort sort) {
		TypedQuery<T> query = getQuery(spec, sort);

		if (offset < 0) {
			throw new IllegalArgumentException("Offset must not be less than zero!");
		}
		if (maxResults < 1) {
			throw new IllegalArgumentException("Max results must not be less than one!");
		}

		query.setFirstResult(offset);
		query.setMaxResults(maxResults);
		return query.getResultList();
	}

}