How to follow two way @OneToMany in JPA?

Question

Java

Hello, there are two entities

@Entity
open class Member() {
    @ManyToOne(optional = false)
    open var group: Group? = null
}

@Entity
open class Group() {
    @OneToMany(mappedBy = "group", fetch = FetchType.EAGER)
    open var members: MutableList<Member> = ArrayList()
}

Kotlin code, but nothing fundamentally changes for java

//сначала rank.group это oldGroup
rank.group = newGroup

In such a situation, should rank be added to newGroup.members? And should it disappear from oldGroup.members? If not, what is the right way to do it?

Answer 1

If you save the rank (which, as I understand it, is of the Member class), then yes, the members set will change.