users.java

Tapestry的一个练习例子

package com.ttdev.eshop;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Users {
	private List users;
	private static Users knownUsers;
	public Users() {
	users = new ArrayList();
	}
	public void add(User user) {
	users.add(user);
	}
	public User getUser(String email, String password) {
	for (Iterator iter = users.iterator(); iter.hasNext();) {
	User user = (User) iter.next();
	if (user.authenticate(email, password)) {
	return user;
	}
	}
	throw new AuthenticationException();
	}
	public static Users getKnownUsers() {
	if (knownUsers == null) {
	knownUsers = new Users();
	knownUsers.add(new User("u001", "[e-mail]", "aaa", "1111 2222 3333 4444"));
	knownUsers.add(new User("u002", "[e-mail]", "bbb", "2222 3333 4444 5555"));
	knownUsers.add(new User("u003", "[e-mail]", "aaa", "3333 4444 5555 6666"));
	}
	return knownUsers;
	}
	}