【作者】 施荣荣； 周晓明； 宋茂忠；

【Author】 Shi Rongrong1 Zhou Xiaoming2 Song Maozhong1 1 College of Information Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing,210016,China 2 Sub-Lab of 28th Electronics Institute,C4ISR Key Laboratory of National Defense,Nanjing 210007,China

【机构】 南京航空航天大学信息科学与技术学院； C~4ISR国防重点实验室电子二十八所分实验室；

【摘要】 基于SOA技术的通用数据访问服务是一个有效的数据访问技术,实现了信息系统中数据集成的灵活性,异构性,同时具有良好的可重用性,封装性和可移植性。但是由于数据访问操作具有事务处理的要求,即多个操作是相关的。而服务具有无状态特征,它们之间存在着一定的矛盾,因此,通过一个数据访问处理相关服务的接口间状态交互来实现数据访问服务,这种状态维护技术是解决这一矛盾的关键技术。本文对信息系统中基于SOA的数据访问需求进行了分析,提出了几种基于SOA有状态数据访问服务的实现方法,并设计和实现了典型的有状态数据访问服务。更多还原

【Abstract】 SOA-based universal data access service is an effective data access technology.It implements agility,heterogeneity of data integration and has good reusability,encapsulation and portability.Data access operations have the needs of transaction processing which has several relative operations,while service has non-state characteristics.There is a certain contradiction between them.The state interaction between interfaces of a data access transaction processing service can implement data access service.This state management technology is a key technology to solve this contradiction.This article analyses the needs of SOA-based data access in information system and proposes some implementations of stateful SOA-based data access service.This article also designs and implements a typical stateful data access service.更多还原