I have an entity called a User, and want to

Question

I have an entity called a User, and want to

create a "follows" relationship, like a User following another User. Of course, a User can follow multiple `User`s. How can I do it with JPA/Hibernate? I'm using JHipster if that matters

0

01.08.2021

7 ответов

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Roy Автор вопроса

Alireza dHb
You can use oneToMany relationship to store a list...

I want to create another independent table

0

01.08.2021

Dmytro Buryak

That's not one-to-many relationship, but many-to-many. User may follow many other users. And user may be followed by many other users, not only one. Many to many is always a separate table

0

01.08.2021

Roy Автор вопроса

Dmytro Buryak
That's not one-to-many relationship, but many-to-m...

can you share a link I can follow? If I were using JDBC, I'd simply be keeping a separate table of IDs mapped to each other but JPA is a bit pain

0

01.08.2021

Dmytro Buryak

Roy
can you share a link I can follow? If I were using...

This article (one of the first Google results) looks nice, it shows all three cases of how you can implement many-to-many with jpa and why you may need different approaches. https://www.baeldung.com/jpa-many-to-many

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01.08.2021

Roy Автор вопроса

Dmytro Buryak
This article (one of the first Google results) loo...

Thanks

0

01.08.2021

Dmytro Buryak

Roy
Thanks

You're welcome. Also I've just remembered that many-to-many is a relationship between "user" and "role" in spring security. This may also be helpful when searching for examples, there are tons of examples out there for classic setups for spring security

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01.08.2021

Alireza dHb · Accepted Answer

Alireza dHb

You can use oneToMany relationship to store a list of users related to this user

0

01.08.2021

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