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Integration of application business logic and business rules with DSL and AOP

100%

Hnatkowska B. , Kasprzyk K.

2010

tom Vol. 4, nr 1

59--69

Business processes and business rules are implemented in almost all enterprise systems. Approaches used today to their implementation are very sensitive to changes. In the paper authors propose to separate business logic layer from business rule layer by introducing an integration layer. The connections between both parts are expressed in a dedicated domain specific language (DSL). The definitions in DSL are further translated into working source code. The proof-of-concept implementation of the integration layer was done in the aspect oriented language (AOP) - AspectJ. The AOP was selected because it fits well to encapsulate scattered and tangled source code implementing the connections between business logic and business rules with the source code implementing core business logic.

Refinement of UML collaborations

80%

Hnatkowska B. , Huzar Z. , Tuzinkiewicz L.

tom Vol. 16, no 1

155-164

The paper concerns the concept of refinement as a commonly used design practice in the software development process. The refinement relationship is formulated and formally expressed for UML collaborations. Collaborations are suitable for presenting the proposed approach as they represent both static and dynamic aspects of a modeled system or its part, for example, a use case. Our approach to refinement is based on the rule of preserving the observable behavior of a modeled system. The introduced notion of sub-collaborations allows us to refine collaboration diagrams in a systematic way.