Spring Boot Basic Course 04- One to many RelationShip

Consider scenario user has many address. 

Address class

ackage com.sb.basic.model;


import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;

import org.springframework.data.jpa.domain.AbstractPersistable;

@Entity
public class Address extends AbstractPersistable<Long>{
 
 private String city;
 private String state;
 private String country;
 //We will create one transition for userId
 private transient Long userId;
 
 @ManyToOne(targetEntity = User.class)
 @JoinColumn(name="user_id") //user_id is table column name
 private User user;
 
 //Getter Setter

Update User class

private String userId;
private String userName;
private String password;
 
 
@OneToMany(targetEntity = Address.class, mappedBy = "user",fetch= FetchType.LAZY ,cascade =CascadeType.ALL)
private Set<Address> address; //Instead of Set(Unordered collection and not allow duplicates) we can use list(ordered and allow duplicate values) as well

Getter and setter;

Create AddressController class

This like normal UserController class

@RequestMapping("/addressList")
 public List<Address> addressList(){
  return addressService.addressList();
 }

Create AddressServiceImpl class

This also like UserSImpl class
@Override
 public List<Address> addressList() {
  return addressRepository.findAll();
 }

Add data to the generated address table.

Then run project

      Method - Get
      Link      - http://localhost:9080/springbootbasic/address/addressList



Priyantha.samaraweera