如何通过单表继承访问父属性?
How to access parent attributes via single table inheritance?
我们描述一个父类,它的元素有一个基数等于一的属性。
We describe a parent class whose elements have a property with cardinality equal to one.
客户能属于其他客户,因此,他有父客户和子客户属性。
Account. Can belong to another account. So, it has the ParentAccount and Subaccounts properties.
这个属性只提供父项目的基本状态资讯。
This property provides only basic state information about the parent item.
使用与父元素相同的属性值。
Use the same computed value as the parent element for this property.
取得父物件所有属性的集合。
取得父物件所有属性的集合。
Gets a collection of all of the attributes for the parent object.
如果您希望显示父数据中的其他列或属性,请将此属性更改为其他属性的路径。
If you want to display a different column or property in the parent data, change this property to the path of a different property.
如果您希望显示父数据中的其他列或属性,请将此属性更改为其他属性的路径。
If you want to display a different column or property in the parent data, change this property to the path of a different property.
应用推荐