An exception hierarchy will let your EJB clients receive both business-specific exceptions and system-specific information, without requiring you to write a lot of extra code.
异常层次结构将允许EJB客户机既接收特定于业务的异常也接收特定于系统的信息，而不需要编写大量额外代码。
According to the database schema information and customized code template, code is built for business logic layer.
本文叙述根据数据库架构信息和定制的代码模板自动生成业务逻辑层代码的实现方法。
According to the database schema information and customized code template, code is built for business logic layer.
本文叙述根据数据库架构信息和定制的代码模板自动生成业务逻辑层代码的实现方法。
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