Entity Inside Spring Projection
Description: If, for some reason, you need an entity in your Spring projection (DTO), then this application shows you how to do it via an example. In this case, there are two entities, Author and Book, involved in a lazy bidirectional one-to-many association (it can be other association as well, or even no materialized association). And, we want to fetch in a Spring projection the authors as entities, Author, and the title of the books.
Key points:
- define two related entities (e.g.,
AuthorandBookin a one-to-many lazy bidirectional relationship) - define the proper Spring projection having
public Author getAuthor()andpublic String getTitle() - write a JPQL to fetch data
| If you need a deep dive into the performance recipes exposed in this repository then I am sure that you will love my book "Spring Boot Persistence Best Practices" | If you need a hand of tips and illustrations of 100+ Java persistence performance issues then "Java Persistence Performance Illustrated Guide" is for you. |
|
|
|
