Spring boot @Transactionnal imbrication bad practice?

Question

I'm developing a JEE app with Spring boot. I just want to be sure that there will be any problem to imbricate functions annoted @Transactionnal ? It is a bad practice ?

In my example, I want to save a Relationship between two User and if I call the last function, it will imbricate three transaction.

@Transactional
public PrRelationship save(Relationship r)
{
    Relationship result = this.relationshipRepo.save(r);

    return result;
}

@Transactional
public Relationship save(Relationship r, User relation)
{
    this.userService.save(relation);

    r.setUser(user);
    r.setUserRelation(relation);
    return this.save(r);
}

@Transactional
public Relationship save(Relationship r, User user, User relation) {
    this.userService.save(user);
    return this.save(r, relation);
}

Thank you for your advices :)

Answer 1

You should do some reading on Transaction Propagation and Transaction Management in Spring. It will answer these kinds of questions.

To answer your question, the default propagation is REQUIRED which means that any calls to transactional methods from a method that creates a transaction will execute on that same transaction. So in your case, they will "imbricate" (I had to look that word up).