Now we need to map our object hierarchy to our table model.
现在我们需要把对象层次结构映射到表模型。
In the samples of this article, Validator is the base of an object hierarchy.
在本文的示例中，Validator是对象层次结构的基础。
Your first step in creating an in-memory object hierarchy is to create an object factory.
创建内存对象层次结构的第一步是创建一个对象工厂。
But the data was alone, with neither hierarchy nor relation nor object.
但数据是孤独的，没有层次结构，没有关系也没有对象。
Set root object for scene hierarchy. Root object coordinate system becomes scene global coordinate system.
为阶层式场景设置根对象，根对象的坐标系会成为场景全局坐标系。
Set root object for scene hierarchy. Root object coordinate system becomes scene global coordinate system.
为阶层式场景设置根对象，根对象的坐标系会成为场景全局坐标系。
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