web服务动态重配置

http://asusrl.eas.asu.edu/srlab/Research/dynamic.html

Dynamic Composition Services

DCS refers to an application infrastructure that allows the application can be freely changed or reconfigured at runtime without stopping the applications. Free as it is, it also allows the changed application being formally verified by back end model checking and simulation services during the deployment. It is a model driven development approach that facilitates the rapid development and verification of Service-Oriented Application.

The application is composed in such a way that it is capable of dynamically reconfigure its functionalities throught its built-in reconfigurable architecture. The reconfigurable architecture consists of assembly utilities that allow the dynamically loading and invoking of application functions with different implementions or from different locations, or changing of system semantics without even stopping the application. Given the system model, once system code is generated from the model by the DCS framework, the system is dynamic reconfigurable.

In a dynamically reconfigurable application, the system code of application generally falls into two categories: Application Domain Code and Dynamic Reconfigurable Code. The main progrom is in application domain, it is automatically generated with option Generate Code for Application from the mapping utility. it contains the application logic that is not dynamically changeable, and the application has to be stopped to enable the changes as normal application.

Dynamic Reconfigurable Code is where the dynamic changeable application logic resides. The application logic or the application functions in this domain can be modified, and the changed logic is applied on the fly without stopping the application and the disruption of the affected service is kept minimum. It is generated using option of "Generate Code for Dll" in mapping utility.