several references to foreign key in domain class

[abstract basalt]

i have 2 one to many annotations in my class and they reference to the same class, but many to ones annotations are located in different classes. should i give them different names or can i leave them the same? and if i have 2 references in one class to single class, should i also give them diff names? sorry, new to the spring

[rocky sleet]

<@&1004656351647117403> please have a look, thanks.

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ld i create a foreign key reference in the domain class for each many-to-one annotation?

Yes, you should create a foreign key reference in the domain class for each many-to-one annotation. This is necessary to establish the relationship between the two classes and ensure data integrity.

For example, if you have two many-to-one annotations in your class that reference the same class, let's say Class A has two many-to-one annotations pointing to Class B, you would need to create two foreign key references in Class B to represent these relationships.

Here's an example of how it could be done:

public class ClassA {
    // ...

    @ManyToOne
    @JoinColumn(name = "class_b_id_1")
    private ClassB classB1;

    @ManyToOne
    @JoinColumn(name = "class_b_id_2")
    private ClassB classB2;

    // ...
}

public class ClassB {
    // ...

    @OneToMany(mappedBy = "classB1")
    private List<ClassA> classAList1;

    @OneToMany(mappedBy = "classB2")
    private List<ClassA> classAList2;

    // ...
}

In this example, we have created two foreign key references in Class B (class_b_id_1 and class_b_id_2) to represent the relationships with Class A. The mappedBy attribute in the @OneToMany annotations specifies the corresponding field name in Class A that maps back to these relationships.

By creating these foreign key references, you can establish and maintain the relationships between the classes and perform operations like cascading updates or deletes when necessary.