The Study and Realization of Software Re-Engineering in Java Persistence

Legacy system re-engineering is an important question for study in Software engineering field. Thus, study on Legacy system´s persistence is significant. The main task of Java´s persistence is to identify, describe and realize the variability and identity. Under the guide of software re-engineering´s, thought, this article utilized reconstruction and design pattern, and raised means how to separate and use variability and identity of Java´s persistence, and apply these in persistence realization of telecommunication system bases on JavaEE.