java - JPA @ManyToOne update association link in both sides -

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class a

@manytoone  private b b;

class b

    @onetomany (mappedby ="b")     private list<a> lista = new arraylist<a>();     private void adda(a a) {     lista.add(a);     }

so owning side, if a.setb(new b()) merge work , association kept.

if b.adda(new a()) merge b, link between , b not updated right ? should b.add(new a()) update link between , b ?

thank much

i don't understand question well, think should add in method adda

private void adda(a a) {     lista.add(a);     a.setb(this); }

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