Composite Primary Key using JPA and Hibernate

File: Customer.java

import java.io.Serializable;

import javax.persistence.EmbeddedId;

import javax.persistence.Entity;

import org.hibernate.validator.constraints.NotEmpty;

@Entity

public class Customer implements Serializable{

      

       @EmbeddedId

       @NotEmpty

       private CustomerId id;

       //Getter Setter for CustomerId

       public CustomerId getId() {

              return id;

       }

       public void setId(CustomerId id) {

              this.id = id;

       }

      

       private String customerBookItem;

       private String customerBookTime;

       //Getter Setter

       public String getCustomerBookItem() {

              return customerBookItem;

       }

       public void setCustomerBookItem(String customerBookItem) {

              this.customerBookItem = customerBookItem;

       }

       public String getCustomerBookTime() {

              return customerBookTime;

       }

       public void setCustomerBookTime(String customerBookTime) {

              this.customerBookTime = customerBookTime;

       }

      

      

}

File: CustomerId.java



import javax.persistence.Embeddable;
import java.io.Serializable;

@Embeddable

public class CustomerId implements Serializable{

      

       @NotEmpty

       private String customerBirthday;

       @NotEmpty

       private String customerName;

      

       //Constructor is necessary

       //default constructor

       public CustomerId() {

              super();

              // TODO Auto-generated constructor stub

       }

      

       //Constructor with attributes

       public CustomerId(String customerBirthday, String customerName) {

              super();

              this.customerBirthday = customerBirthday;

              this.customerName = customerName;

       }

      

       public String getCustomerBirthday() {

              return customerBirthday;

       }

       public void setCustomerBirthday(String customerBirthday) {

              this.customerBirthday = customerBirthday;

       }

       public String getCustomerName() {

              return customerName;

       }

       public void setCustomerName(String customerName) {

              this.customerName = customerName;

       }

      

}