Migration of a Chosen Architectural Pattern to Service Oriented ...

Chapter 3. Architectural Patterns 603. Data–Centered View – presents system as a data store. The store containsone or more independent components to store data and one or morecomponents that request data. Description of patterns has to provide informationabout a method of data storage, access, update and distribution aswell as a method of communication with and among data storing elements.The patterns have also to point out whether they are active or passive.The description of a pattern belonging to Data-Centered View includes itsscalability, modifiability, reusability and integrability.4. Adaptation View – presents a system from adaptivity point of view. Systemmust have two main parts: static and dynamic. The static part is a coreof the system. Dynamic parts can be added or removed from the system inruntime. Patterns introduced in this category have to enable architecture toevolve and keep communication between particular elements when a systemevolves.5. Language Extension View – divides system into two parts. The first partis native for environment in opposite to the second, which is not. Patternsunderline how non–native parts of the system are integrated and translatedinto environment.6. User Interaction View – underlines perspective of users. Patterns that belongto this category have presentation that is strongly separated from therest of the system. Those patterns take special care about data, applicationlogic and their associations with presentation, therefore an impact onusability, modifiability and reusability is also considered.7. Component Interaction View – underlines communication between particularcomponents of a system and presents the system itself as a set of independentcomponents. The communication technique can be synchronous aswell as asynchronous. The important fact is that whichever communicationtype is chosen it has to be indirect. Important aspects are modifiability andintegrability.8. Distribution View – lays a special emphasis on physical localisation andrelations of components over network. A special emphasis is laid on decouplingof distributed components. Important aspects are performance,modifiability, location and transparency.Categorisation by View presented by P. Avgeriou and U. Zdun provides methodcovering not only elements of architecture and connection between those elementsbut also other properties like usability of application are considered This way ofcategorisation of patterns will be further used as a selected to categorisation.