@RemoteMethod
@Transactional
public boolean addNode(Class<? extends AbstractHierarchyNode> nodeClass, UUID id, UUID parent) {
Assert.notNull(id);
Assert.notNull(nodeClass);
AbstractHierarchy hierarchy = dao.find(nodeClass, id).getHierarchy();
if (parent != null) {
AbstractHierarchy parentHierarchy = dao.find(nodeClass, parent).getHierarchy();
hierarchy.setParent(parentHierarchy);
parentHierarchy.addChild(hierarchy);
}
dao.update(hierarchy);
return true;
}