In any application, we need business logic, and we need to expose that logic somehow to be consumed by external clients.
In this chapter, we are going to analyze business requirements and define the business logic we need to create. We are also going to design a RESTful API using JAX-RS to expose that logic to the external world.
The following topics will be covered in this chapter:
Designing and implementing the business layer using use cases. See how the business layer connects to the persistence layer.
Designing ...
