Modulization approach & application of OSGi -based RFID middleware persistence Layer

The enterprise-class RFID Middleware demands the flexibility to switch its data access strategies on the persistence layer; however, the traditional frameworks of persistence layer such as Hibernate, iBatis, etc. are seldom of dynamic switching characteristic which makes them incapable to cater for the enterprise-class RFID Middleware on its persistence layer. This paper begins with the analysis of the traditional data access strategies of persistence layer. With the foundation of in-depth studying OSGi, Spring and current mainstream frameworks of persistence layer, it points out a feasible method to implement dynamic switching by CBSD. Hence, the SpringDM-based modularization of Hibernate, an open source persistence layer framework, is firstly proposed. With further insight and development, a dynamic model based on SpringDM is put forward which achieves the flexibility to switch the data access strategies effortlessly at will. It could also be regarded as the general form of deploying the J2EE persistence frameworks to OSGi to provide support for the OSGi-ized multi-frameworks and realize the applications of RFID Middleware´s persistence layer.