Admin: 1 версия

2010-06-01T06:50:29Z

1 версия

в 18:01, 31 мая 2010

2010-05-31T18:01:45Z

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== 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>

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Admin: 1 версия

в 18:01, 31 мая 2010