DESIGN AND IMPLEMENTATION DATA PERSISTENCE LAYER MODEL BASED ON J2EE

摘要

Persistent management design in enterprise applications is crucial for performance and flexibility of the whole system. This article proposes an object persistent model that is both extensible and performable. We use proxy model to manage data persistence based on O/R mapping; make access to the underlying data independently encapsulated and make object model and relational database independent of each other by dynamically generating SQL statements and mapping information. In addition, we improve the data accessing efficiency greatly through the dynamic allocation mechanism and the buffering mechanism.