Create a business object layer, called intermediate objects, which serves as a placeholder for data used in event evaluation.
创建业务对象层，即所谓的中间对象，它们将用作事件评估中使用的数据的占位符。
Additionally, an SDO object can be used to carry information between the presentation layer and the business layer.
此外SDO对象可以在表示层和业务层间传递信息。
If you have your application's business logic layer neatly packaged in a Web service or COM object, then you may be able to build view and control logic in J2EE that makes use of that COM object.
如果您的应用程序业务逻辑层被巧妙的打包成web服务或者COM对象，您就可以把视图和控制逻辑构建在J2EE上，利用这个COM对象。
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