JPA persist with OneToMany ManyToOne

Question

I am trying to persist entities with @OneToMany and @ManyToOne relationships.

@OneToMany(mappedBy="customer", cascade=CascadeType.ALL, fetch=FetchType.EAGER)
private Collection<Address> addresses = new LinkedHashSet<Address>();

@ManyToOne
@JoinColumn(name="customer_id", referencedColumnName="customer_id")
private Customer customer;

problem is that it inserts NULL instead of customer_id in the address table.

could you suggest why is that happening.

Thank you in advance.

Please show the complete mappings (without constructors and methods) plus the code you use to persist. -> edit question — Kawu
a little code will actually performs the transaction will be helpful! — Satadru Biswas
It's just a blind shooting here if you don't show us the code for the actual persistence operation. — Piotr Nowicki

JB Nizet JB Nizet · Accepted Answer · 2011-11-23T11:43:12

That probably means that you didn't initialize the customer field of the addresses. If that isn't the solution, then show us your code.

JPA persist with OneToMany ManyToOne

1 Answers