对这个挑战的回答是基于注册中心的“延迟绑定”。
The answer to this challenge is the use of registry-based “late binding”.
在清单4中，XFG为已注册模式生成绑定信息(您已经在清单1中见过该模式)。
XFG generates bind information, in Listing 4, for the registered schema (you saw the schema in Listing 1).
相反，注册中心包含运行时绑定所需的此信息的子集。
In contrast, the registry contains a subset of this information that is required at runtime binding.
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