As with other service implementation types, business rules may be either stateless or stateful, meaning they may choose to maintain internal data records across multiple invocations.
和其他服务实现类型一样，业务规则可能为无状态的或有状态的，即可以选择跨多个调用维护内部数据记录。
When you drag a piece of data from the page data view onto a JSP page, a wizard is displayed to let you choose what types of UI controls to generate.
当您从Page Data视图拖拉数据段到jsp页面时，会出现一个向导，以让您选择生成哪一种类型的UI控件。
The handleData function is implemented to handle JSON data, but you can customize it to handle other data types if you choose.
handleData 函数被实现为处理 JSON 数据，但是可以对它进行定制，使之处理其他数据类型。
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