Spring Applications

Exercise: Order Entities

The objective of this exercise is to define the relationships of the order classes and to implement a generic repository with CRUD operations.

1. Add JPA annotations to the order classes such that the entities conform to the given SQL schema by defining
   • the id fields are generated primary keys
   • the address and creditCard fields of the Customer and Order entity as embedded relationships
   • the book field of the OrderItem entity as many-to-one relationship
   • the customer and items fields of the Order entity as many-to-one and one-to-many relationships with appropriate cascade and fetch types
2. Convert the BookRepository class to a GenericRepository class that provides CRUD operations for any entities.
3. Add the entity classes to the persistence.xml configuration file.
4. Start the database and run the OrderPersistenceIT integration test.