insight.database - 支持曾孙 (Insight.Database)

Question

使用 Insight.Database，我可以查询具有子对象及其孙子对象的对象：

var someObject = connection.Query("SomeStoredProc", new {ParentId = id}, Query.Returns(Some<Parent>.Records) .ThenChildren(Some<Child>.Records) .ThenChildren(Some<Grandchild>.Records, parents: parent=> parent.Children, into: (child, grandchildren) => child.Grandchildren = grandchildren));

我有一组表 Parent -> Child -> Grandchild -> Great-Grandchild

我尝试使用 RecordId、ParentId、ChildRecords 属性无济于事。此外，我所有的课程都用 [BindChildren(BindChildrenFor.All)] 装饰。

有没有办法让我的曾孙子孙满堂？谢谢！

Answer 1

该模式类似于孙子。对于父母：选择器，您只需要使用 SelectMany 来获取孙子的完整列表。

（至少，它应该是这样工作的......）

var someObject = connection.Query("SomeStoredProc", new {ParentId = id},
        Query.Returns(Some<Parent>.Records)
            .ThenChildren(Some<Child>.Records)
            .ThenChildren(Some<Grandchild>.Records,
                    parents: parent=> parent.Children,
                    into: (child, grandchildren) => child.Grandchildren = grandchildren)
            .ThenChildren(Some<GreatGrandchild>.Records,
                    parents: parent=> parent.Children.SelectMany(c => c.Grandchildren)),
                    into: (grandchild, greatgrantchildren) => grandchild.greatgrantchildren= greatgrantchildren));

);