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Policy trading

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2 Author(s)
Hanssen, O. ; Fac. of Eng., Agder Univ. Coll., Grimstad, Norway ; Eliassen, F.

We investigate policy trading to address the problem of how extensible and configurable middleware could adapt to different non-functional requirements and different properties of environments. Policies denote potential contracts between the system and the user, i.e. if requirements for the environment is met, the policies guarantee that certain QoS will be provided. Trading involves matching user requirements plus environmental properties with policies. We define policy trading and illustrate its principles and use. Trading is based on profile expressions which are references to statically defined profile graphs. Such expressions can be combined through simple adding (sum) or adding expressions which refers to different locations (sidesums). We develop a set of rules to allow for testing of compatibility relationships between profile expressions

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Distributed Objects and Applications, 2000. Proceedings. DOA '00. International Symposium on

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