Implementing CRUD functionality for an entity
We have now configured the Spring application context and configured our web application to load it during startup. We will now implement CRUD functions for a simple entity. Our example application is used to view and manage contact information, and we can implement it by following these steps:
Create a domain model.
Create a repository for an entity.
Implement CRUD functions.
Note
This chapter describes only such parts of our application that are required to understand how Spring Data JPA works.
Domain model
The domain model of our application consists of two classes: Contact and Address. This subsection will address the following matters:
The information content of each class
How we can create new objects by using the builder pattern (see also: Effective Java (Second Edition), Joshua Bloch, Addison-Wesley)
How we can update the information of an object
Contact
The
Contact class is the only entity of our domain model and it contains the information of a...
