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

Chapter 6. Conclusion 149RQ.6 How the target architecture should look like?The target architecture is a SOA architecture that consist of identified SOAarchitectural patterns. The architecture is presented in figure 4.4. Motivationbehind the structure of architecture is presented in section 4.6.2. The elaboratedtarget architecture divides the system into layers. The layers revolve aroundinteraction with users, applied business processes and basic services. Additionallythe architecture presents schemas and policies as parts of the system that shouldbe accessible by services from all layers of the target architecture.RQ.7 How to translate the selected architectural pattern into the targetarchitecture?Following steps are proposed for migration from MVC to SOA.1. Convert MVC into layers2. Choose main communication protocol3. Unify used schemas4. Unify policies5. Identify and wrap into services all coarse grained utilities6. Identify and encapsulate access to any external resource7. Identify and wrap into services all entity related code8. Identify and wrap into services business rules9. Provide inventory endpoints to basic services10. Identify all business processes within the legacy application11. Identify all statefull services and decide if their state can be deferred12. Identify current points of access to the migrated system13. Identify all the places in user interface where a continuous feedback fromapplication to end user is providedWhat is important here, each step of migration introduces into the architectureone SOA architectural pattern. Detailed description of guidelines is presented insection 5.2.1. Section 5.4 presents example application of the guidelines.