A class level constraint has access to the bean instance rather than one of its properties and applies some constraint logic based on several properties.
类级别的约束能获取Bean实例，而不是它的某一属性，还能应用一些基于若干属性的约束。
This weakening of the data structure constraint requires the strengthening of constraints within the application logic as necessary.
这种数据结构约束的弱化要求根据需要强化应用程序逻辑中的约束。
SOA includes a constraint design that facilitates changing information constraints as open standards are applied in higher processing layers toward business logic.
SOA包含一种约束设计，有利于将信息约束改变为应用于面向业务逻辑的更高处理层次的公开标准。
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