国中正大学资讯工程研究所
硕士文
延伸自 ODMG 续存层的应用程式介面
指导教授
贝尔 博士
研究生
简仁
民国九十一十二月
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Extensions to the ODMG Persistency Layer API
A Thesis Presented to the Institute of Computer Science and Information Engineering National Chung Cheng University Chia-Yi, Taiwan
In Partial Fulfillment of the Requirements for the Degree Master
Advisor Dr. Daniel J Buehrer
by Chien Li-Ren
December 2002
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志谢
Acknowledgements
This thesis was prepared under the advisorship of Daniel J Buehrer. His consistent advice, encouragement, and confidence were essential for completion of this thesis, and is highly appreciated.
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摘要
在本文中,我们延伸自 DDMG 的 OIF 定义一个别 DBObject,期能完整的 纪一个物件导向资库的物件资讯;i.e. 其别,属性值,与其他物件的关系等. DBObject 能纪存在 OIFML(i.e ODMG 物件及其关系的 XML 定义)的资讯,并 且将 JAVA 的物件视为 DBObject 的一个属性的值.一个我们所订别 DBObject 的实为一个自我内含的物件资库的元素,其属性及关系可以被轻的新及 存取.我们实作一个续存层程式介面将 DBObject 续存於 JAVA 的序挡,XML 档或关式资库中.我们也实作一个 GUI 的 JAVA 程式测试我们的续存层 程式介面.
Abstract
In this thesis, we define a class named DBObject extends from ODMG's OIF, which can fully record the information of an OODB object; i.e. it's class, the values of its attributes, and its relationships to other objects. DBObject can record the information stored in OIFML (i.e. XML declarations of ODMG objects and their relationships), and treat Java Objects as values of the DBObjects' attributes. An instance of our class DBObject is a self-contained element of an OODB whose attributes and relationships can easily be updated and retrieved. We implement a persistency layer API to persistence our DBObject to a Java serialized file, an XML file or a relational database. We also implement a GUI Java program to test our persistency layer API
Contents
List of Tables List of Illustrations
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Chapter 1 Introduction ..................................................................................................... 8 Chapter 2 Problem specification .................................................................................... 13 Chapter 3 Architecture of persistence layer API ............................................................ 14 Chapter 4 Mapping ........................................................................................................ 17

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