Question

So, I have a onetomany relationship between two classes called Customer and Address.

In the Customer class I have: @OneToMany(mappedBy="customer", cascade = CascadeType.ALL) private Set addresses;

And in Address I have: @ManyToOne(optional=false) private Customer customer;

Now, when I try to create a new customer with its address everything works just fine, but in the Addresses table on my database, the column customer_id is null and I don t know why. I thought CascadeType.ALL would ve done all of this linking job. I ve also tried adding a JoinColumn on the relationship on the Address side, but that didn t work either. What should I do? I hope I ve been clear enough.

Answer 1

请确保你将这一提法的两部分都予以保留,因为它是双向关系。

http://www.ohchr.org。阶级形成了这样一种方法:

public void addAddresses(Address address) {
    addresses.add(address);
    address.setCustomer(this);
}

然后,创建<条码>Customer,并添加<条码>地址:

Customer c = new Customer();
c.addAddresses(new Address());
customerRepository.save(customer);

友情链接