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| 网构软件数据语用的一种动态支撑方法 |
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滕 腾1,2, 黄 罡1,2, 陈兴润1,2, 梅 宏1,2
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1.北京大学 信息科学技术学院 软件研究所,北京 100871;2.北京大学 高可信软件技术教育部重点实验室,北京 100871
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| 摘要: |
| 网构软件不确定的数据需求导致了其数据语用(data pragmatics,简称DP)的不确定性,进而要求数据语用的支撑机制具备动态适应能力,即应用的对象属性与数据表之间的对应关系可以按需动态地创建、更新、删除.针对当前持久化技术缺乏数据语用的动态适应性问题,提出了一种基于对象/关系映射的数据语用动态支撑方法POD(persistence on demand),并且在主流ORM(object/relational mapping)框架的基础上实现了一个遵循POD的持久化框架的原型系统. |
| 关键词: 数据语用 持久化 网构软件 中间件 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.60403030, 90412011, 90612011 (国家自然科学基金); the National Basic Research Program of China under Grant No.2005CB321805 (国家重点基础研究发展计划(973)) |
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| An Approach to Dynamically Operating Data Pragmatics for Internetware |
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TENG Teng,HUANG Gang,CHEN Xing-Run,MEI Hong
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| Abstract: |
| The uncertain data requirements of Internetware lead to the DP (data pragmatics) uncertainty. And then it is required that the DP operating mechanism has the ability to adapt to the uncertain DP, i.e. the corresponding relationships between application objects and database tables can be dynamically created, updated and removed on demand. As current persistence technologies lack of dynamic adaptation of DP, this paper proposes an approach to dynamically operating DP for Internetware, POD (persistence on demand), based on ORM (object/relational mapping). Together with the mainstream ORM framework, a prototype of persistence framework following POD is implemented. |
| Key words: data pragmatics persistence Internetware middleware |
