Based On Reconfigurable Middleware Technology Applications

When deploying and maintaining enterprise information system, we often have to modify the program code because of user changeful requirements. So it is most important to reconstruct the networking applications without programming as business logic changes. In order to accomplish this goal, the paper describes the enterprise information system as a set of form flows, event flows and data flows. Base on these kinds of flows, a new application server ICETIP is designed and implemented. ICETIP is an information processing system with the ability of reconstructing and reconfiguring networking applications, gives us a brand-new mode of developing and deploying enterprise information system, and can be used to build different kinds of applications without any further programming.ICETIP consists of three subsystems: reconstructed configuration system, self-adaptive client system, and reconfigured application server. Reconstructed configuration system defines form element and active-transaction, implements the reconstruction of form and business logic. Self-adaptive client system interprets the flows information based on the foregoing configuration. Reconfigured application server defines the communication protocol in ICETIP and provides steady and effective service. This paper presents the structure and implementation of the three subsystems.This paper studies the reconfigured application server in detail and implements the server framework on Windows Platform. The server implements client connection pool, database connection pool, business logic handler and log management and so on. Based on the framework of ICETIP application server, this paper presents a simplified [M/G/1]:[K/∞/FCFS] queuing model. Using this queuing model, we obtain the formula for estimating application server performances, including throughput, blocking probability and average response time. Finally, the performance of the ICETIP server is simulated under some hypothesis;the result shows that the framework of ICETIP application server is feasible and responsive.