@Repository
public class ColumnDaoGaeImpl extends ColumnDaoImpl implements ColumnDao {
public Column insert(String name, Column parent) {
ColumnGae columnGae = (ColumnGae) this.insert(name);
columnGae.setParent(parent);
columnGae.setParentId(parent.getId());
parent.getChildren().add(columnGae);
return columnGae;
}