int calcInheritenceChain(PersistentEntity pe) { if (pe == null) { return 0; } else { return calcInheritenceChain(pe.getParentEntity()) + 1; } }
public PersistentEntity getRootEntity() { if (isRoot() || getParentEntity() == null) { return this; } PersistentEntity parent = getParentEntity(); while (!parent.isRoot()) { parent = parent.getParentEntity(); } return parent; }