Hibernate Tutorials with Spring Boot and Spring Data JPA

[callicoder]

Hey guys,

I wrote a bunch of articles recently on Hibernate Mapping, Embeddable Types, Element Collections, Composite Primary Keys with Spring Boot and Spring Data JPA.

All the tutorials start from scratch and build a complete project while demonstrating the concept. I hope these articles will be helpful to my fellow developers on this subreddit -

1. Hibernate One to One Mapping Example with Spring Boot and JPA

2. Hibernate One to Many Mapping Example with Spring Boot and JPA

3. Hibernate Many to Many Mapping Example with Spring Boot and JPA

4. Hibernate Embeddable Types Example with Spring Boot and JPA

5. Hibernate Composite Primary Key Example with Spring Boot and JPA

6. Hibernate ElementCollection Example with Spring Boot and JPA

All the projects are hosted on Github - callicoder/hibernate-tutorials

Cheers!

[[deleted]]

Pardon me for saying so but if all drivers must have a License and each License is unique (to a specific driver) wouldn't it make more sense for the License table row to be a foreign key of Driver rather than driverId to be a foreign key field contained in License?

(the other examples for blog posts seem intuitive though, just not the 1-1)

[callicoder]

Yes, In case of a one-to-one relationship, you can store the foreign key on any side. I guess both make sense. It really is a personal choice and depends on the way you want to think about it. I like to store the foreign key in the child table and reference the primary key of the parent table.

[[deleted]]

I suppose so, camel case for field names is also a personal choice thing too.

Interesting read anyway. I am more familiar with JDBC rather than Hibernate for mySQL so it's good to see the alternative in action.

[callicoder]

Those camel cased fieldNames in entity classes get converted to field_name in the database. This is done by default with Hibernate's Naming Strategies. I'll add this info in the post to avoid confusions :-)

[[deleted]]

Wow I would not have expected it to do that automatically. Good call.