期刊名称：Issues in Informing Science and Information Technology
印刷版ISSN：1547-5840
电子版ISSN：1547-5867
出版年度：2007
卷号：4
页码：767-779
出版社：Informing Science Institute
摘要：Persistence is the term used in computer science to describe a capability to store data structures in
non-volatile storage such as a file system or a relational database (Wikipedia, 2003). There is a
growing need to simplify the interactions among separate systems and to build complex software
systems that are made out of components with well-defined services. At the base-level of such
complex systems lies a persistence framework ¨C a set of classes tailored to save, retrieve, update
and delete objects to and from their persistence stores, such as databases and flat files. This paper
presents the design, and implementation of the transparent persistence framework called PersistF.
Design patterns (Gamma, Helm, Johnson, & Vlissides, 1995) have been widely accepted in the
software engineering community as the recommended approach to developing software. Part of
the research effort of this work included the application of well-known design patterns in order to
build the framework. We present how consistent application of design patterns allowed us to
build a fully working persistence framework.
In order to support development of modern complex applications, some recent application development
environments for different programming languages are built in with some kind of persistence
framework. To use these frameworks in target applications, the developer often must go
through a steep learning curve as each framework is specific in some way, but namely in respect
of configuring the framework¡¯s runtime engine with enough information about the domain application.
This configuration is often time consuming and error prone. Most of the existing frameworks
require complicated configuration steps that are imposed onto the developer. Our aim with
this work was to present a framework that will not require such complicated configuration steps
and would provide its service to the target application with virtually no configuration of the
framework's handling of domain classes.
关键词：transparent persistence framework, design patterns, Java, relational to object model
mapping
