Linq 到 Nhibernate 批量更新查询等效？

Question

不确定我是否遗漏了这里的任何内容。基本上，我正在寻找 Linq to Nhibernate 来执行以下 SQL 语句:

update SomeTable
set SomeInteger = (SomeInteger + 1)
where SomeInteger > @NotSoMagicNumber

有什么办法吗？

谢谢!

Answer 1

迟到的答案，但它现在存在于 Nhibernate 5.0 中。

    //
    // Summary:
    //     Update all entities selected by the specified query. The update operation is
    //     performed in the database without reading the entities out of it.
    //
    // Parameters:
    //   source:
    //     The query matching the entities to update.
    //
    //   expression:
    //     The update setters expressed as a member initialization of updated entities,
    //     e.g. x => new Dog { Name = x.Name, Age = x.Age + 5 }. Unset members are ignored
    //     and left untouched.
    //
    // Type parameters:
    //   TSource:
    //     The type of the elements of source.
    //
    // Returns:
    //     The number of updated entities.
    public static int Update<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, TSource>> expression);

在你的情况下:

    session.Query<SomeObject>()
            .Update(i => new SomeObject { SomeInteger = i.SomeInteger + 1 });

感谢 NHibernate 团队!