public SimpleTreeDao(Class<T> clazz) {
this.entityClass = clazz;
dao = DaoFactory.getDao(entityClass);
treeCoupler = CouplerFactory.getTreeCoupler(entityClass);
coupler = treeCoupler.getCoupler();
childCouplers = treeCoupler.getChildCouplers();
oneToOneMap = coupler.getOneToOneMap();
oneToManyMap = coupler.getOneToManyMap();
manyToOneMap = coupler.getManyToOneMap();
ordersMap = coupler.getOrdersMap();
}
