Source Code : Embeddable Entity

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Embeddable Entity

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(){

    Employee cust = new Employee();
    cust.setFirstName("B");
    cust.setLastName("B");
    Address address = new Address();
    address.setStreet("Street");
    address.setCity("Boston");
    address.setState("MA");
    cust.setAddress(address);
    
    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: Address.java


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

@Embeddable
public class Address implements java.io.Serializable {
   private String street;
   private String city;
   private String state;

   @Column(name="STREET")
   public String getStreet() { return street; }
   public void setStreet(String street) { this.street = street; }

   @Column(name="CITY")
   public String getCity() { return city; }
   public void setCity(String city) { this.city = city; }

   @Column(name="STATE")
   public String getState() { return state; }
   public void setState(String state) { this.state = state; }
}


File: Employee.java

import javax.persistence.AttributeOverride;
import javax.persistence.AttributeOverrides;
import javax.persistence.Column;
import javax.persistence.Embedded;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

@Entity
public class Employee implements java.io.Serializable {
  private long id;

  private String firstName;

  private String lastName;

  private Address address;

  @Id
  @GeneratedValue
  public long getId() {
    return id;
  }

  public void setId(long id) {
    this.id = id;
  }

  public String getFirstName() {
    return firstName;
  }

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

  public String getLastName() {
    return lastName;
  }

  public void setLastName(String last) {
    this.lastName = last;
  }

  @Embedded
  @AttributeOverrides( { @AttributeOverride(name = "street", column = @Column(name = "STREET")),
      @AttributeOverride(name = "city", column = @Column(name = "CITY")),
      @AttributeOverride(name = "state", column = @Column(name = "STATE")) })
  public Address getAddress() {
    return address;
  }

  public void setAddress(Address address) {
    this.address = address;
  }
}


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();

  }

}


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



           
       

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