Hibernate中Criteria的完整用法

Hibernate中Criteria的完整用法

一、查询对象

 a、DetachedCriteria dc = DetachedCriteria.forClass(CredAnnexKhImage.class);
 b、dc.add(Restrictions.eq("custCompanyInfo.id", custId));
 c、dc.addOrder(Order.asc("parentType"));
 d、执行：(List) this.baseDao.getListForCriteria(dc);

      补充：Restrictions用法

 1、Restrictions.like("reportDate", year + "%");
 2、Restrictions.or(可有多个条件用，分隔）;
 3、Restrictions.in("checkResult", new String[]{"0", "1", "2"});
 4、Restrictions.isNull("checkResult")

二、CallableCriteria

      1、用法：

 a、CallableCriteria.getInstance(baseDao, cls).in("id", ids).addOrder(order).list();
    // baseDao：接口；cls：对象；ids：数组；order：参数；

三、查询分页

 public void queryPage(DetachedCriteria detachedCriteria, Page page) {
     Criteria criteria = detachedCriteria.getExecutableCriteria(getSession());
     Integer count = (Integer) criteria.setProjection(Projections.rowCount()).uniqueResult();
     if (null != count) {
         page.setTotalProperty(count);
     }
     LOGGER.debug("count:" + count);
     criteria.setProjection(null);
     criteria.setResultTransformer(CriteriaSpecification.ROOT_ENTITY);
     LOGGER.debug("PAGE PARAM start:" + page.getStart() + " limit:" + page.getLimit());
     page.setRoot(criteria.setFirstResult(page.getStart()).setMaxResults(page.getLimit()).list());
 }