JPA2.0 Join联结查询，JPA2.0Join联结,JPA2.0 join联

JPA2.0 Join联结查询，JPA2.0Join联结,JPA2.0 join联

JPA2.0 join联结查询

        CriteriaBuilder cb = getEntityManager().getCriteriaBuilder();        CriteriaQuery<Photo> cq = cb.createQuery(Photo.class);        Root<Photo> root_ = cq.from(Photo.class);        Join<Photo, ServiceItem> join = root_.join(Photo_.serviceItems,                JoinType.LEFT);        cq.select(root_);