Java/EJB3/J2SE
Use PortableRemoteObject to Load remote interface
<source lang="java">
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; @Basic(fetch=LAZY) @Lob @Column(name="PIC") private byte[] picture; 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 byte[] getPicture() { return picture; } public void setPicture(byte[] picture) { this.picture = picture; } public String toString() { return "Employee id: " + getId() + " name: " + getName() + " salary: " + getSalary(); }
}
File: EmployeeService.java
import java.util.Collection; import javax.ejb.Stateless; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.Query; import org.jboss.annotation.ejb.RemoteBinding; @Stateless @RemoteBinding(jndiBinding="EmployeeServiceRemote") public class EmployeeService implements EmployeeServiceLocal, EmployeeServiceRemote {
@PersistenceContext(unitName="EmployeeService") 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); emp.setPicture(pic); em.persist(emp); emp = findEmployee(id); System.out.println(emp); 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(){ Employee emp = new Employee(1); emp.setName("name"); emp.setSalary(100); emp.setPicture("pic".getBytes()); em.persist(emp); emp = findEmployee(1); System.out.println(emp); }
}
File: EmployeeServiceLocal.java
import javax.ejb.Local; @Local public interface EmployeeServiceLocal {
public void doAction(); public Employee createEmployee(int id, String name, long salary, byte[] pic) ;
}
File: EmployeeServiceRemote.java
import javax.ejb.Remote;
@Remote
public interface EmployeeServiceRemote{
public Employee createEmployee(int id, String name, long salary, byte[] pic) ; public void 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
File: Main.java import javax.naming.InitialContext; import javax.rmi.PortableRemoteObject; public class Main {
public static void main(String[] a) throws Exception {
// Context compEnv = (Context) new InitialContext().lookup("java:comp/env"); // service = (HelloService)new InitialContext().lookup("java:comp/env/ejb/HelloService"); Object obj = new InitialContext().lookup("EmployeeServiceRemote"); EmployeeServiceRemote service = (EmployeeServiceRemote)PortableRemoteObject.narrow(obj,EmployeeServiceRemote.class); service.createEmployee(158, "AAA", 45000, "asdf".getBytes()); service.doAction(); }
}
</source>