Question

是否可以将3个ICriteria与OR语句一起加入而不是AND？

ICriteria criteriaCity = NHibernateSession.CreateCriteria(typeof(Advertisements))
            .CreateCriteria(AdvertisementsProperties.City.ToString(), "city").
            Add(Restrictions.Or(
                    Restrictions.Like("city." + CitiesProperties.Name.ToString(), text, MatchMode.Anywhere),
                    Restrictions.Like("city." + CitiesProperties.SlovenianName.ToString(), text, MatchMode.Anywhere)));

        ICriteria criteriaArea = NHibernateSession.CreateCriteria(typeof(Advertisements))
            .CreateCriteria(AdvertisementsProperties.Area.ToString(), "area").
            Add(Restrictions.Or(
                    Restrictions.Like("area." + AreasProperties.Name.ToString(), text, MatchMode.Anywhere),
                    Restrictions.Like("area." + AreasProperties.SlovenianName.ToString(), text, MatchMode.Anywhere)));

        ICriteria criteriaCountry = NHibernateSession.CreateCriteria(typeof(Advertisements))
            .CreateCriteria(AdvertisementsProperties.Country.ToString(), "country").
                Add(Restrictions.Or(
                        Restrictions.Like("country." + CountriesProperties.Name.ToString(), text, MatchMode.Anywhere),
                        Restrictions.Like("country." + CountriesProperties.SlovenianName.ToString(), text, MatchMode.Anywhere)));

此致

如果我这样做：

var criteria= NHibernateSession.CreateCriteria<Advertisements>();
criteria.CreateCriteria(AdvertisementsProperties.City.ToString(), "City");
criteria.CreateCriteria(AdvertisementsProperties.Area.ToString(), "Area");
criteria.CreateCriteria(AdvertisementsProperties.Country.ToString(), "Country");

        var dis = Restrictions.Disjunction();
        dis.Add(Restrictions.Like("City.Name", text, MatchMode.Anywhere));
        dis.Add(Restrictions.Like("City.SlovenianName", text, MatchMode.Anywhere));
        dis.Add(Restrictions.Like("Area.Name", text, MatchMode.Anywhere));
        dis.Add(Restrictions.Like("Area.SlovenianName", text, MatchMode.Anywhere));
        dis.Add(Restrictions.Like("Country.Name", text, MatchMode.Anywhere));
        dis.Add(Restrictions.Like("Country.SlovenianName", text, MatchMode.Anywhere));
        criteria.Add(dis);

我从来没有得到任何结果。我只用

var criteria = NHibernateSession.CreateCriteria（）; criteria.CreateCriteria（AdvertisementsProperties.City.ToString（），“City”）; criteria.CreateCriteria（AdvertisementsProperties.Country.ToString（），“Country”）;

    var dis = Restrictions.Disjunction();
    dis.Add(Restrictions.Like("City.Name", text, MatchMode.Anywhere));
    dis.Add(Restrictions.Like("City.SlovenianName", text, MatchMode.Anywhere));
    dis.Add(Restrictions.Like("Country.Name", text, MatchMode.Anywhere));
    dis.Add(Restrictions.Like("Country.SlovenianName", text, MatchMode.Anywhere));
    criteria.Add(dis);

然后工作。但行数不同

var criteria= NHibernateSession.CreateCriteria<Advertisements>();
    criteria.CreateCriteria(AdvertisementsProperties.Country.ToString(), "Country");

            var dis = Restrictions.Disjunction();
            dis.Add(Restrictions.Like("Country.Name", text, MatchMode.Anywhere));
            dis.Add(Restrictions.Like("Country.SlovenianName", text, MatchMode.Anywhere));
            criteria.Add(dis);

你知道为什么吗？我不明白......

此致

Answer 1

对多个OR限制使用Disjunction限制;相反，使用Junction进行多个AND。我不确定xProperties类的用途，但这应该让你开始：

var criteria = session.CreateCriteria<Advertisements>();
var dis = Restrictions.Disjunction();
dis.Add(Restrictions.Like("City.Name", text, MatchMode.Anywhere);
dis.Add(Restrictions.Like("City.SlovenianName", text, MatchMode.Anywhere);
dis.Add(Restrictions.Like("Area.Name", text, MatchMode.Anywhere);
dis.Add(Restrictions.Like("Area.SlovenianName", text, MatchMode.Anywhere);
dis.Add(Restrictions.Like("Country.Name", text, MatchMode.Anywhere);
dis.Add(Restrictions.Like("Country.SlovenianName", text, MatchMode.Anywhere);
criteria.Add(dis);
return criteria.List<Advertisements>();

加入3 icriteria或

1 个答案: