The service modeling process based on use case refactoring

Abstract

Service-Oriented Architecture (SOA) is an architecture for a system or application that is built using services that implement business functionality with proper granularity. If the granularity of a service is finer, the flexibility and reusability of the service is lower. Therefore, it is critically important to identify what pieces of functionality will become services and to define the interfaces of those services. In this paper, we define a process to identify services by use case refactoring. Task trees are defined to restructure use cases, and five refactoring rules are introduced along with a running example. Because this modeling process can choose the correct levels of abstraction and granularity, it can be helpful in identifying coarse-grained services.