NHibernate-别名和关联

我有一个实体，看起来像这样：

public class MyEntity {
 public virtual int Id { get; set; }
 public virtual string Name { get; set ; }
 public virtual Role UserRole { get; set; }
}

ICriteria c = Db.CreateCriteria<MyEntity>("m")
 .CreateAlias("Role", "r")
 .SetProjection(Projections.ProjectionList()
 .Add(
  Projections.SqlProjection(@"Name = case TypeId
                    when 2 then (select Name from tblOne where Id = EntityId)
                    when 4 then (select Name from tblTwo where Id = EntityId)
                    when 3 then (select Name from tblThree where Id = EntityId)
                    end", new string[] { "Name" }, new NHibernate.Type.IType[] { NHibernateUtil.String }))
                .Add(Projections.Property("m.Id"), "Id")
                .Add(Projections.Property("r.Id"), "UserRole.Id")
                .Add(Projections.Property("r.Desc"), "UserRole.Desc")
                .Add(Projections.Property("r.Permission"), "UserRole.Permission")
    )
    .SetResultTransformer(Transformers.AliasToBean<EntityPermission>());

属性名称不是映射的属性，但Id和UserRole是。我想使用如下自定义条件填充此类：

public class MyEntity {
 public virtual int Id { get; set; }
 public virtual string Name { get; set ; }
 public virtual Role UserRole { get; set; }
}

ICriteria c = Db.CreateCriteria<MyEntity>("m")
 .CreateAlias("Role", "r")
 .SetProjection(Projections.ProjectionList()
 .Add(
  Projections.SqlProjection(@"Name = case TypeId
                    when 2 then (select Name from tblOne where Id = EntityId)
                    when 4 then (select Name from tblTwo where Id = EntityId)
                    when 3 then (select Name from tblThree where Id = EntityId)
                    end", new string[] { "Name" }, new NHibernate.Type.IType[] { NHibernateUtil.String }))
                .Add(Projections.Property("m.Id"), "Id")
                .Add(Projections.Property("r.Id"), "UserRole.Id")
                .Add(Projections.Property("r.Desc"), "UserRole.Desc")
                .Add(Projections.Property("r.Permission"), "UserRole.Permission")
    )
    .SetResultTransformer(Transformers.AliasToBean<EntityPermission>());

但是，如果执行此操作，它会引发异常，无法在类“MyEntity”中找到属性“{UserRole.Id}”的setter

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所以我的问题是aliastobean不支持关联吗？如果它支持关联，正确的语法是什么？

您应该将别名包装到UserRole而不是Role，因为属性的名称是UserRole，而不是Role。

您应该将别名包装到UserRole而不是Role，因为属性的名称是UserRole，而不是Role