| /* |
| * Copyright 1999-2004 The Apache Software Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cocoon.samples.flow.prefs; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * Maintains a list of registered users. This is a very simple class, |
| * there is no persistence of the users, but such thing should be easy |
| * to add. |
| * |
| * @since August 28, 2002 |
| * @version $Id$ |
| */ |
| public class UserRegistry |
| { |
| static UserRegistry userRegistry = new UserRegistry(); |
| |
| Map registeredUsers = new HashMap(); |
| |
| public static UserRegistry getUserRegistry() |
| { |
| return userRegistry; |
| } |
| |
| protected UserRegistry() |
| { |
| } |
| |
| public synchronized boolean addUser(User user) |
| { |
| if (registeredUsers.containsKey(user.getLogin())) |
| return false; |
| |
| registeredUsers.put(user.getLogin(), user); |
| return true; |
| } |
| |
| public boolean removeUser(User user) |
| { |
| return registeredUsers.remove(user) != null; |
| } |
| |
| /** |
| * Checks is a particular login name is taken or not. |
| * |
| * @param loginName a <code>String</code> value |
| * @return true if <code>loginName</code> is taken, false otherwise |
| */ |
| public boolean isLoginNameTaken(String loginName) |
| { |
| return registeredUsers.get(loginName) != null; |
| } |
| |
| /** |
| * Returns the {@link User} object which represents an user. Note that |
| * we require a password to be present, to avoid presenting private |
| * information to anyone. |
| * |
| * @param loginName a <code>String</code> value |
| * @param password a <code>String</code> value |
| * @return an <code>User</code> value |
| */ |
| public User getUserWithLogin(String loginName, String password) |
| { |
| User user = (User)registeredUsers.get(loginName); |
| |
| if (user == null) |
| return null; |
| |
| return password.equals(user.getPassword()) ? user : null; |
| } |
| } |