Question on one to one bidirectional

[Tony Evans]

Hi I am trying to test bidirectiona. I am using spring CrudRepository

I have created two entities

@Entity
@Table(name = "customer")
public class Customer {
	
	@Id
	private long customerId;
	
	private String customerName;
	
	@OneToOne(mappedBy="customer") 
	private CustomerAdddress customerAdddress;

	public long getCustomerId() {
		return customerId;
	}

	public void setCustomerId(long customerId) {
		this.customerId = customerId;
	}

	public String getCustomerName() {
		return customerName;
	}

	public void setCustomerName(String customerName) {
		this.customerName = customerName;
	}

	public CustomerAdddress getCustomerAdddress() {
		return customerAdddress;
	}

	public void setCustomerAdddress(CustomerAdddress customerAdddress) {
		this.customerAdddress = customerAdddress;
	}

	@Override
	public String toString() {
		return "Customer [customerId=" + customerId + ", customerName=" + customerName + ", customerAdddress="
				+ customerAdddress + "]";
	}

}

And

@Entity
@Table(name = "customerAdddress")
public class CustomerAdddress {
	
	@Id
    private long customerAddressId;
	
	private String addressLine;
	private String city;
	private String postCode;
	
	@OneToOne(cascade=CascadeType.ALL, fetch=FetchType.EAGER)
    @JoinColumn(name="customer_id")
	Customer customer;
	
	public long getCustomerAddressId() {
		return customerAddressId;
	}

	public void setCustomerAddressId(long customerAddressId) {
		this.customerAddressId = customerAddressId;
	}

	public String getAddressLine() {
		return addressLine;
	}

	public void setAddressLine(String addressLine) {
		this.addressLine = addressLine;
	}

	public String getCity() {
		return city;
	}

	public void setCity(String city) {
		this.city = city;
	}

	public String getPostCode() {
		return postCode;
	}

	public void setPostCode(String postCode) {
		this.postCode = postCode;
	}

	public Customer getCustomer() {
		return customer;
	}

	public void setCustomer(Customer customer) {
		this.customer = customer;
	}

	@Override
	public String toString() {
		return "CustomerAdddress [customerAddressId=" + customerAddressId + ", addressLine=" + addressLine + ", city="
				+ city + ", postCode=" + postCode + "]";
	}
}

running the test

CustomerAdddress customerAdddress = new CustomerAdddress();
		customerAdddress.setCustomerAddressId(1111000L);
		customerAdddress.setAddressLine("20 matt street");
		customerAdddress.setCity("London");
		customerAdddress.setPostCode("TS158XX");
		Customer customer = new Customer();
		customer.setCustomerId(100010l);
		customer.setCustomerName("Smith");
		customer.setCustomerAdddress(customerAdddress);
		System.out.println(customer.toString());
		customerAdddress.setCustomer(customer);
		
		customerRepository.save(customer);
		
		Optional<Customer> repo = customerRepository.findById(100010l);
		customer = repo.get();
		System.out.println(customer.toString());

Brings back customer and a null for customerAddress

[Tim Holloway]

This isn't actually a Spring thing. What you are asking about relates to the Java Persistence Architecture (JPA). Which is well-supported by Spring Data, but there's nothing specific to Spring Data here.

So I'm listing this post in our ORM forum where more experts on JPA can see it.

As far as it goes, I think that your mapping to Customer Address looks suspect, but I'm preoccupied at the moment.

[Himai Minh]

Hi, Tony,
How do you save the customerAddress  to the repository?