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我遇到了以下情况：我有每个类层次结构的表：

public abstract class Parent : BaseEntity, IHierarchyEntity
    {
    }  

public class ChildA : Parent
{
    public virtual string Name { get; set; }
}

public class ChildB : Parent
{
    public virtual string Value { get; set; }
}

public class Container : BaseEntity
{
    public Container()
    {
        CollectionOne = new HashSet<ChildA>();
        CollectionTwo = new HashSet<ChildB>();
    }

    public virtual ICollection<ChildA> CollectionOne { get; set; }

    public virtual ICollection<ChildB> CollectionTwo { get; set; }
}

一小部分域映射器逻辑（几乎相同）：

IEnumerable<Type> allPersistEntities = GetDomainEntities();
IEnumerable<Type> roots = allPersistEntities.Where(t => t.IsAbstract && t.InheritedFromBaseEntity());
IEnumerable<Type> hierarchyEntities = allPersistEntities.Where(t => typeof(IHierarchyEntity).IsAssignableFrom(t));
var hierarchyRoots = hierarchyEntities.Where(t => t.IsAbstract && t.InheritedFromBaseEntity());
orm.TablePerClassHierarchy(hierarchyRoots);

当我保存项目时，一切正常，但是当我尝试获取项目时，我在 CollectionOne（ChildA 类型）中获得了其中两个，而在第二个中出现错误：

非法访问加载集合我在sql中看到的：

NHibernate:
    SELECT
        container0_.Id as Id0_0_
    FROM
        CONTAINERS container0_
    WHERE
        container0_.Id=@p0;
    @p0 = 1 [Type: Int32 (0)] NHibernate:
    SELECT
        collection0_.ContainerId as Containe5_1_,
        collection0_.Id as Id1_,
        collection0_.Id as Id1_0_,
        collection0_.Name as Name1_0_
    FROM
        PARENTS collection0_
    WHERE
        collection0_.ContainerId=@p0;
    @p0 = 1 [Type: Int32 (0)] NHibernate:
    SELECT
        collection0_.ContainerId as Containe5_1_,
        collection0_.Id as Id1_,
        collection0_.Id as Id1_0_,
        collection0_.[Value] as Value3_1_0_
    FROM
        PARENTS collection0_
    WHERE
        collection0_.ContainerId=@p0;
    @p0 = 1 [Type: Int32 (0)]

没有鉴别器字段。有可能修复它吗？

4

1 回答 1

1

你能试一下吗：

var hierarchyRoots = hierarchyEntities.Except(roots);

我认为您可能需要给它确切的叶子来映射，我认为它不会假设它应该将从根继承的所有类映射为 tpch。

于 2017-09-25T23:03:16.240 回答