大型超市运营系统框架，基于GWT EJB JPA，完整的Java EE Web Application
大型超市运营系统，这是为IBM Mainframe而开发的运营系统，虽然最后未能完成，但是框架均已搭好。
##系统架构
基于GWT+EJB+JPA，标准的JAVA EE web应用。
##封装
用Java反射和递归调用，为JPA 实体类封装了统一的toString()，便于打印实体对象。用EJB的stateless session bean，结合JPA的EntityManager与Java泛型，封装了统一的Generic EAO类。通过继承此Generic EAO类，一个实体可以迅速获到自己的EAO类。用Servlet封装了简易的测试框架，在不启动笨重的GWT插件的前提下，快速测试业务方法。基于GWT的MVP开发模式，提取出单独core层，这样可以只使用一个MVP架构，分模块开发项目。
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