PAT(Persistent Applications Toolkit) Like many other software it simplifies developing of persistence layers of business applications. It does it by providing object-oriented environment for persistence of your objects: POJOs

PAT：持久性應(yīng)用程序工具包，AOP（JBossAOP）持久性庫（方面庫）。
為持久層提供基礎(chǔ)Prevayler（1.02）。
允許用戶編寫代碼而不必?fù)?dān)心持久性代碼（POJO）。