Warren, I., "A Model for Dynamic Configuration which Preserves Application Integrity", PhD thesis, Lancaster Uni., 2000.  Home/Search   Document Not in Database   Summary   Related Articles   Check

.... change management needs have been already provided for, has been an important issue in software engineering [24, 25] Principal proposals that identified collaboration requirements and developed mechanisms to program needed collaborations came from systems such as, Conic, Podus, Polylith and PCL [25, 41, 19, 44]. All proposed solutions assumed that to achieve management flexibility in a system one must incorporate collaboration related code into individual software objects. Recent work in this area [12, 31] thus focused mainly on language and programming environment aspects that might simplify ....

....received and sent by an object. RESTCLK compiler may be written to translate these statements automatically to the requisite control signal emissions. 9.4 Other Related Work Work on dynamic reconfiguration may be classified into three categories: 1. Problem identification and proposed solutions [24, 25, 15, 20, 21, 19, 44, 17, 18, 41, 34], 2 We show in Chapter 8 programming an object to function in a RESTCLK environment will in practice cost very little in terms of additional delays incurred in communication, when compared to any other agent mediated communication system. Thus there is little or no overhead to using RESTCLK. ....

I. Warren and I. Sommerville. A model for dynamic configuration which preserves application integrity. In Proceedings of the International Conference on Configurable Distributed Systems, pages 81--88, 1996.

....Each of these areas is summarized briefly below. Distributed Configurable Systems The research in the area of distributed configurable systems has been focussed on dynamically changing the relationships and connections between components, and in replacing components while the system is running [16, 18, 22, 32, 40]. Transaction models are generally used to control when replacement takes place, and mechanisms have been developed to transfer state to the new component [23] However, emphasis is on reconfiguring a system for a new task or in simply on thefly component replacement, and the general assumption is ....

I. Warren and I. Sommerville. A Model for Dynamic Configuration which Preserves Application Integrity. In Proceedings of the Third International Conference on Configurable Distributed Systems, pages 81--88. IEEE Computer Society Press, May 1996.

....that make up a system, where individual components can be replaced relatively independent of one another. This ability means that systems, even after they are deployed, are now more malleable than ever. Much recent work has revolved around the basic support necessary for enabling this malleability [4, 5, 6, 8, 12]. On one hand, malleability is good, since the system can be tailored to a specific task, or a failing piece can be selectively upgraded. Unfortunately, a component that has been modified to fix one defect may inadvertently break some other existing functionality, or the modified system ....

I. Warren and I. Sommerville. A Model for Dynamic Configuration which Preserves Application Integrity. In Proceedings of the Third International Conference on Configurable Distributed Systems, pages 81--88. IEEE Computer Society Press, May 1996. 6

....execution is disrupted only when necessary to perform some configuration change. Nevertheless, the process of explicitly identifying the reconfiguration points is too error prone, especially as the distributed application scales in source code size. Similar approaches presented in [4] and [14] are respectively based on facilities provided by the Chorus operating system, and on PCL (a configuration language for modeling evolving system architectures) These approaches alleviate the programmer from some of the drudgery of identifying reconfiguration points , by automating the ....

I. Warren and I. Sommerville. A Model for Dynamic Configuration which Preserves Application Integrity. In Proceedings of the 3rd International Conference on Configurable Distributed Systems, pages 81--88, May 1996.

....of these areas is summarized briefly below. 2. 1 Distributed Configurable Systems The research in the area of distributed configurable systems has been focussed on dynamically changing the relationships and connections between components, and in replacing components while the system is running [16, 18, 22, 30, 33, 42]. Transaction models are generally used to control when replacement takes place, and mechanisms have been developed to transfer state to the new component [23] However, emphasis is on reconfiguring a system for a new task or in simply onthe fly component replacement, and the general assumption ....

I. Warren and I. Sommerville. A Model for Dynamic Configuration which Preserves Application Integrity. In Proceedings of the Third International Conference on Configurable Distributed Systems, pages 81--88. IEEE Computer Society Press, May 1996.

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Warren, I., "A Model for Dynamic Configuration which Preserves Application Integrity", PhD thesis, Lancaster Uni., 2000.

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