[odb-users] How to persist cyclic pointers among A->B->C->A?

[Justin Huang]

Hi,

If I have three classes A, B and C, and A has pointer to object of class B, B has pointer to object of C, and C has pointer to object of A, which is a cyclic pointer relationship.

How should I persist objects a1/a2/b1/c1? E.g., the persistent sequence, and how to avoid persist same objects twice?

// class definitions
class A {
public:
     std::string name_;
     B *b_;
};

class B {
public:
     std::string name_;
     C *c;
};

class C {
public:
     std::string name_;
     A *a;
};

// objects created
A *a1 = new A("A1");
A *a2 = new A("A2");
B *b1 = new B("B1");
C *c1 = new C("C1");

a1->set_b(b1);
a2->set_b(b1);
b1->set_c(c1);
c1->set_a(a1);

thanks,
Justin

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