Distributed System Development and study Environment on Java and Corba - A Subsystem of Execution Environment

• Main Authors: WANG CHIH YUNG, 王志勇
• Other Authors: Po-Zung Chen
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/88013905598904968984

碩士 === 淡江大學 === 資訊工程學系 === 88 === In Distributed System Development and study Environment (DSDSE), users can interactively study the theory and practice of distributed systems. We build a subsystem of DSDSE, which is an interaction environment; the purpose of this environment is to execute distribution algorithm, record information about time stamp event, and generate Happen-before DAG according to the information. The central of the execution environment is a service-manager who built by CORBA(Common Object Request Broker Architecture ) POA (Portable Object Adapter), The primary job of service-manager is to activate/deactivate CORBA object. Each CORBA object operates autonomously by exporting and requesting services as a participant to algorithm execution-they collaborate to get a job done. One of the participants is an algorithm-manager who will collect information and interact with client. We used the CORBA to provide a distributed object infrastructure. The Java language binding allows implementation of CORBA clients as applets. This enables access to CORBA objects using popular Web browsers. Add Java Database Connectivity (JDBC) access to CORBA object; enable client to invoke database operations. We use Unified Modeling Language (UML) to construct the system's blueprint. We apply use case diagram to model the context of a system and model the requirement of a system. We use interaction diagram to model scenarios in use cases and model interaction objects in collaborations.