Source Code : Mark Embedded Id

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Mark Embedded Id

File: EmployeePK.java

import javax.persistence.Column;
import javax.persistence.Embeddable;

@Embeddable
public class EmployeePK implements java.io.Serializable {
  private String lastName;

  private long ssn;

  public EmployeePK() {
  }

  public EmployeePK(String lastName, long ssn) {
    this.lastName = lastName;
    this.ssn = ssn;
  }
  @Column(name="CUSTOMER_LAST_NAME")
  public String getLastName() {
    return this.lastName;
  }

  public void setLastName(String lastName) {
    this.lastName = lastName;
  }
  @Column(name="CUSTOMER_SSN")
  public long getSsn() {
    return ssn;
  }

  public void setSsn(long ssn) {
    this.ssn = ssn;
  }

  public boolean equals(Object obj) {
    if (obj == this)
      return true;
    if (!(obj instanceof EmployeePK))
      return false;
    EmployeePK pk = (EmployeePK) obj;
    if (!lastName.equals(pk.lastName))
      return false;
    if (ssn != pk.ssn)
      return false;
    return true;
  }

  public int hashCode() {
    return lastName.hashCode() + (int) ssn;
  }
}


File: EmployeeService.java


import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

@Stateless
public class EmployeeService implements EmployeeServiceLocal, EmployeeServiceRemote {
  @PersistenceContext(unitName="EmployeeService")
  EntityManager em;
  
  public EmployeeService() {
  }
  public void doAction(){
    EmployeePK pk = new EmployeePK("B", 9999999);
    Employee cust = new Employee();
    cust.setPk(pk);
    cust.setFirstName("B");  
    
    em.persist(cust);
    em.flush();
    System.out.println("saved");
    
  }
}

    


File: EmployeeServiceLocal.java



import java.util.Collection;

import javax.ejb.Local;

@Local
public interface EmployeeServiceLocal {
    public void doAction();

}



File: EmployeeServiceRemote.java




import java.util.Collection;

import javax.ejb.Remote;

@Remote
public interface EmployeeServiceRemote{
  public void doAction();  

}



File: Employee.java

import java.io.Serializable;

import javax.persistence.AttributeOverride;
import javax.persistence.AttributeOverrides;
import javax.persistence.Column;
import javax.persistence.EmbeddedId;
import javax.persistence.Entity;
import javax.persistence.Table;
import javax.persistence.Transient;

@Entity
@Table(name="EMP")

public class Employee implements Serializable {
  private String firstName;
  private EmployeePK pk;

  public String getFirstName() { return firstName; }
  public void setFirstName(String firstName) { this.firstName = firstName; }

  @EmbeddedId
  @AttributeOverrides({
      @AttributeOverride(name="lastName", column=@Column(name="LAST_NAME")),
      @AttributeOverride(name="ssn", column=@Column(name="SSN"))
  })
  public EmployeePK getPk() { return pk; }
  public void setPk(EmployeePK pk) { this.pk = pk; }

  @Transient
  public String getLastName() { return pk.getLastName(); }

  @Transient
  public long getSsn() { return pk.getSsn(); }
}


File: jndi.properties

java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099


File: Main.java

import java.util.Collection;

import javax.naming.InitialContext;


public class Main {

  public static void main(String[] a) throws Exception {

    EmployeeServiceRemote service = null;

    // Context compEnv = (Context) new InitialContext().lookup("java:comp/env");

    // service = (HelloService)new InitialContext().lookup("java:comp/env/ejb/HelloService");
    service = (EmployeeServiceRemote) new InitialContext().lookup("EmployeeService/remote");
    
    

    
    
    service.doAction();

  }

}





           
       

Thank with us