NHibernate（1） HQL 条件查询(QBC) 条件限制

QBC (Query By Criteria) 主要有Criteria,Criterion,Oder,Restrictions，Expresss类组成

比较运算符

   HQL运算符                   QBC运算符                      含义
      =                     Restrictions.eq()                  等于
      <>                   Restrictions.not(Exprission.eq())  不等于
      >                     Restrictions.gt()                  大于
      >=                   Restrictions.ge()                  大于等于
      <                     Restrictions.lt()                  小于
      <=                   Restrictions.le()                  小于等于
      is null             Restrictions.isnull()              等于空值
      is not null      Restrictions.isNotNull()           非空值
      like                 Restrictions.like()                字符串模式匹配
      and                Restrictions.and()                 逻辑与
      and                Restrictions.conjunction()         逻辑与
      or                   Restrictions.or()                  逻辑或
      or                   Restrictions.disjunction()         逻辑或
      not                  Restrictions.not()                 逻辑非
      in(列表)          Restrictions.in()                  等于列表中的某一个值
      ont in(列表)         Restrictions.not(Restrictions.in())不等于列表中任意一个值
      between x and y      Restrictions.between()             闭区间xy中的任意值
      not between x and y  Restrictions.not(Restrictions..between()) 小于值X或者大于值y

1、简单查询 

//+收货单
ICriteria iReceivingCriteria = session.CreateCriteria(typeof(IEIReceivingContent));
iReceivingCriteria.Add(Expression.Eq("InvoiceStatus", 3));

 iStockCriteria.Add(Expression.Like("OrgId", criteria.OrgId));

2、时间段查询

 　　　　iReceivingCriteria.Add(Restrictions.Between("BusinessDate", criteria.BeginDate, criteria.EndDate));

3、HQL 使用 多条件查询

　　3.1 同一个输入数值 匹配两个字段

            list = DeliveryDao.CurrentSession.CreateCriteria(typeof(Delivery))
                .Add
                 (
                   NHibernate.Criterion.Restrictions.Or
                    (
                        NHibernate.Criterion.Restrictions.Like("Id", "%" + idOrNo + "%"),
                        NHibernate.Criterion.Restrictions.Like("DeliveryNbr", "%" + idOrNo + "%")
                    )
                 )

　　3.2 两个以上or 的实现方法 利用Disjunction方法可以实现
　　　　crit.Add(Expression.Disjunction()
　　　　.Add(Expression.Eq("order_state", 1))
　　　　.Add(Expression.Eq("order_state", 2))
　　　　.Add(Expression.Eq("order_state", 0))
　　　　); 

3.3 多个字段不同的值

NHibernate.ICriteria criteria = StorageBalanceDao.CurrentSession.CreateCriteria(typeof(StorageBalance));
        criteria.Add(
               NHibernate.Criterion.Expression.Disjunction()
                    .Add(NHibernate.Criterion.Restrictions.Eq("property_1", "value_1"))
                    .Add(NHibernate.Criterion.Restrictions.Eq("property_2", "value_2"))
                    .Add(NHibernate.Criterion.Restrictions.Eq("property_3", "value_3"))
            );