Remove Annotation : Stateful Session Bean « EJB3 « Java

1. Java
2. EJB3
3. Stateful Session Bean

Remove Annotation

File: Employee.java

import static javax.persistence.FetchType.LAZY;

import java.io.Serializable;

import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Lob;
import javax.persistence.Table;

@Entity
//@Table(name="EMP", schema="HR")
@Table(name="EMP")
public class Employee implements Serializable {
  @Id
  @Column(name = "EMP_ID")
  private int id;
  @Column(name = "COMM")
  private String name;
  @Column(name = "SAL")
  private long salary;

  
  public Employee() {
  }

  public Employee(int id) {
    this.id = id;
  }

  public int getId() {
    return id;
  }

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

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public long getSalary() {
    return salary;
  }

  public void setSalary(long salary) {
    this.salary = salary;
  }


  public String toString() {
    return "Employee id: " + getId() + " name: " + getName() + " salary: " + getSalary();
  }
}


File: EmployeeService.java


import java.util.Collection;

import javax.ejb.Remove;
import javax.ejb.Stateful;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;
import javax.persistence.Query;

@Stateful
public class EmployeeService implements EmployeeServiceLocal, EmployeeServiceRemote {
  @PersistenceContext(unitName="EmployeeService", type=PersistenceContextType.EXTENDED)
  EntityManager em;
  
  public EmployeeService() {
  }

  public Employee createEmployee(int id, String name, long salary, byte[] pic) {
    Employee emp = new Employee(id);
    emp.setName(name);
    emp.setSalary(salary);
    
    em.persist(emp);
    
    emp = findEmployee(id);
    System.out.println(emp);
    em.flush();
    return emp;
  }

  public void removeEmployee(int id) {
    Employee emp = findEmployee(id);
    if (emp != null) {
      em.remove(emp);
    }
  }

  public Employee raiseEmployeeSalary(int id, long raise) {
    Employee emp = em.find(Employee.class, id);
    if (emp != null) {
      emp.setSalary(emp.getSalary() + raise);
    }
    return emp;
  }

  public Employee findEmployee(int id) {
    return em.find(Employee.class, id);
  }

  public Collection<Employee> findAllEmployees() {
    Query query = em.createQuery("SELECT e FROM Employee e");
    return (Collection<Employee>) query.getResultList();
  }
  
  public void doAction(){
  }

  @Remove
  public void remove()
  {
    System.out.println("removed");
  }
}

    


File: EmployeeServiceLocal.java



import java.util.Collection;

import javax.ejb.Local;

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

    public Employee createEmployee(int id, String name, long salary, byte[] pic) ;
    public void removeEmployee(int id);
    public Employee raiseEmployeeSalary(int id, long raise) ;
    public Employee findEmployee(int id);
    public Collection<Employee> findAllEmployees() ;
}



File: EmployeeServiceRemote.java




import java.util.Collection;

import javax.ejb.Remote;

@Remote
public interface EmployeeServiceRemote{
  public void doAction();  
  public Employee createEmployee(int id, String name, long salary, byte[] pic) ;
  public void removeEmployee(int id);
  public Employee raiseEmployeeSalary(int id, long raise) ;
  public Employee findEmployee(int id);
  public Collection<Employee> findAllEmployees() ;  

}



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.createEmployee(158, "AAA", 45000, "asdf".getBytes());
    service.createEmployee(159, "AAA", 45000, "asdf".getBytes());
    Employee emp = service.findEmployee(158);
    System.out.println(emp);
    
    Collection<Employee> list = service.findAllEmployees();
    
    System.out.println(list);
  }

}




           
       

EJB-RemoveAnnotation.zip( 4,489 k)

Related examples in the same category

1.	Stateful Session Bean Lifecycle: PrePassivate
2.	Stateful Session Bean Lifecycle: PreDestroy
3.	Stateful Session Bean Lifecycle: PostConstruct
4.	Stateful Session Bean Lifecycle: PostActivate
5.	Stateful Session Bean And Shopping Cart
6.	Stateful Session Bean And Entity Manager
7.	Use Lifecycle Method To Manage Collection In Stateful Session Bean
8.	EJB Tutorial from JBoss: stateful session bean
9.	EJB Tutorial from JBoss: stateful session bean deployment descriptor
10.	Remove a Stateful Session Bean
11.	Ejb With Generic Method