A ResultSet can be a complex object with a number of important methods.
ResultSet可以是具有多个重要方法的复杂对象。
Problems arise from overloading a complex object with responsibility for its own creation.
如果让复杂对象负责自己的创建，就会出现问题。
Add a method that is responsible for making the EJB proxy call and returning a complex object.
添加负责进行EJB代理调用和返回复杂对象的方法。
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