Gestion à distance de comptes bancaires - solution

public interface Banque extends java.rmi.Remote {

public void creerCompte(String id, double somme) throws java.rmi.RemoteException;

public void ajouter(String id, double somme) throws java.rmi.RemoteException;

public void retirer(String id, double somme) throws java.rmi.RemoteException;

public Position position(String id) throws java.rmi.RemoteException;

public void enregistrerNotification(String id, BanqueNotification b, double minimum)

throws java.rmi.RemoteException;

public void enleverNotification(String id) throws java.rmi.RemoteException;

}

import java.rmi.Remote;

import java.rmi.RemoteException;

public interface BanqueNotification extends Remote {

public void notification(double valeur, double mini) throws RemoteException;

}

import java.io.Serializable;

import java.util.Date;

public class Position implements Serializable {

private double solde;

private Date derniereOperation;

public Position(double solde) {

this.solde = solde; this.derniereOperation = new Date();

}

public Date getDerniereOperation() {

return derniereOperation;

}

public void setDerniereOperation(Date derniereOperation) {

this.derniereOperation = derniereOperation;

}

public double getSolde() {

return solde;

}

public void setSolde(double solde) {

this.solde = solde;

}

public String toString() {

return "solde = "+solde+" date dernière op. "+derniereOperation;

}

}

import java.net.MalformedURLException;

import java.rmi.*;

import java.rmi.server.*;

import java.util.*;

class Compte {

private Position position;

private BanqueNotification notif;

private double notifMinimum;

public Compte(double somme) {

this.position = new Position(somme);

}

public Position getPosition() {

return position;

}

public void ajouter(double somme) {

position.setSolde(position.getSolde()+somme);

position.setDerniereOperation(new Date());

}

public void retirer(double somme) {

position.setSolde(position.getSolde()-somme);

position.setDerniereOperation(new Date());

if (notif != null && position.getSolde() < notifMinimum) {

try {

notif.notification(position.getSolde(), notifMinimum);

} catch (RemoteException e) {

e.printStackTrace();

}

}

}

public void setNotification(BanqueNotification notif, double mini) {

this.notif = notif;

notifMinimum = mini;

}

}

import java.rmi.Naming;

import java.rmi.RemoteException;

import java.rmi.registry.LocateRegistry;

import java.rmi.server.UnicastRemoteObject;

import java.util.Hashtable;

public class BanqueImpl extends UnicastRemoteObject implements Banque {

Hashtable<String,Compte> comptes;

public BanqueImpl() throws RemoteException {

super();

comptes = new Hashtable<String,Compte>();

}

public void creerCompte(String id, double somme) throws RemoteException {

comptes.put(id, new Compte(somme));

}

public void ajouter(String id, double somme) throws RemoteException {

Compte cpt = comptes.get(id);

cpt.ajouter(somme);

}

public void retirer(String id, double somme) throws RemoteException {

Compte cpt = comptes.get(id);

cpt.retirer(somme);

}

public Position position(String id) throws RemoteException {

Compte cpt = comptes.get(id);

return cpt.getPosition();

}

public void enregistrerNotification(String id, BanqueNotification b, double mini)

throws RemoteException {

Compte cpt = comptes.get(id);

cpt.setNotification(b, mini);

}

public void enleverNotification(String id) throws RemoteException {

Compte cpt = comptes.get(id);

cpt.setNotification(null, 0);

}

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

LocateRegistry.createRegistry(1099) ;

Naming.rebind("MaBanque", new BanqueImpl());

System.out.println("MaBanque est enregistrée");

}

}

import java.rmi.RemoteException;

import java.rmi.server.UnicastRemoteObject;

public class BanqueNotificationImpl extends UnicastRemoteObject implements BanqueNotification {

private String id;

public BanqueNotificationImpl(String id) throws RemoteException {

super() ;

this.id = id;

}

public void notification(double valeur, double mini) throws RemoteException {

System.out.println("Votre compte "+id+" est inférieur au mini : "+mini+" solde : "+valeur);

}

}

import java.net.MalformedURLException;

import java.rmi.*;

public class BanqueClient {

public static void main(String[] args) throws MalformedURLException, RemoteException, NotBoundException {

Banque proxy = (Banque) Naming.lookup("MaBanque");

proxy.creerCompte("Bob", 100);

BanqueNotificationImpl bni = new BanqueNotificationImpl("Bob");

proxy.enregistrerNotification("Bob", bni, 0);

proxy.ajouter("Bob", 100);

System.out.println("Position du compte de Bob : "+proxy.position("Bob"));

proxy.retirer("Bob", 300);

proxy.retirer("Bob", 100);

System.out.println("Position du compte de Bob : "+proxy.position("Bob"));

bni = null;

proxy.enleverNotification("Bob");

}

}