协同应用中组通信服务的研究与设计

The Design and Im plem entation oftheGroup Com m unication Service in Cooperative Application

为了有效地支持协同应用的开发和集成，如ＣＡＤ工具的集成，在对分布对象技术及组通信技术深入研究的基础上，设计实现了一个支持组通信的分布式集成环境ＤＩＥ／ＧＣＳ．文中首先讨论了ＣＯＲＢＡ和组通信模型的优缺点，指出两者具有互补性，它们的结合将能够很好地满足分布式协作应用的需求；其次，描述了ＤＩＥ／ＧＣＳ的框架结构以及ＧＣＳ的组成部分和ＧＣＳ的实现；最后，提出了一个成员开发框架，以方便分布式协同应用中成员的开发．

In order to support the developm ent and integration of cooperative applications based on the research achievem ents ofdistributed object-oriented technology and group com m uni- cation technology, an object-oriented group com m unication service——GCSis designed and im - plem ented. First, the advantages and shortages of CORBA and group com m unication are dis- cussed, and the factthatthey provide com plem entary functionality and theircom bination can sat- isfy the requirem ents ofthe cooperative application m uch better is pointed out. Second, the com - ponents and system architecture, asw ellasthe im plem entation ofGCSare described. Last, a de- velopm ent fram ew ork for group m em bers to facilitate the developm entofcooperative applications is presented.