标准中的模拟组

Question

我使用NHibernate标准并返回具有相同ID的对象我如何创建像“group by”那样的东西？

    public List<ProducerRelation> GetByDateRangeAndUser(DateTime from, DateTime till, string user,
         ICollection exeptedIds)
    {
        var criteria = NHibernateSession.CreateCriteria(typeof(ProducerRelation));
        AddCriterionByRouteUnitDate(criteria, from, till, exeptedIds);
        criteria.Add(Restrictions.Eq(
                    String.Format("{0}.{1}", ProducerRelation.Properties.Order,
                        BackOffice.Core.Domains.Order.Properties.CreatedBy), user));
        return criteria.List<ProducerRelation>() as List<ProducerRelation>;
    }



    private void AddCriterionByRouteUnitDate(ICriteria crit, DateTime from, DateTime till,
        ICollection exeptedIds)
    {
        crit.CreateAlias(ProducerRelation.Properties.Order, ProducerRelation.Properties.Order);
        crit.CreateAlias(String.Format("{0}.{1}",
            ProducerRelation.Properties.Order,
            bModel.Order.Properties.RouteUnits), ProducerRelation.Properties.RouteUnit)
            .Add(Restrictions.Between(
                String.Format("{0}.{1}", ProducerRelation.Properties.RouteUnit, RouteUnit.Properties.DtStart),
                from, till))
            .Add(Restrictions.Not(
                Restrictions.In(ProducerRelation.Properties.Id, exeptedIds)
                ));
    }

Answer 1

因为你的代码不可复制，所以我猜你可能需要在最后添加一个转换。

尝试.SetResultTransformer(new DistinctRootEntityResultTransformer());