| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.jsecurity.authc; |
| |
| /** |
| * Thrown when an authentication attempt has been received for an account that has already been |
| * authenticated (i.e. logged-in), and the system is configured to prevent such concurrent access. |
| * |
| * <p>This is useful when an application must ensure that only one person is logged-in to a single |
| * account at any given time. |
| * |
| * <p>Sometimes account names and passwords are lazily given away |
| * to many people for easy access to a system. Such behavior is undesirable in systems where |
| * users are accountable for their actions, such as in government applications, or when licensing |
| * agreements must be maintained, such as those which only allow 1 user per paid license. |
| * |
| * <p>By disallowing concurrent access, such systems can ensure that each authenticated session |
| * corresponds to one and only one user at any given time. |
| * |
| * @author Les Hazlewood |
| * @since 0.1 |
| */ |
| public class ConcurrentAccessException extends AccountException { |
| |
| /** |
| * Creates a new ConcurrentAccessException. |
| */ |
| public ConcurrentAccessException() { |
| super(); |
| } |
| |
| /** |
| * Constructs a new ConcurrentAccessException. |
| * |
| * @param message the reason for the exception |
| */ |
| public ConcurrentAccessException(String message) { |
| super(message); |
| } |
| |
| /** |
| * Constructs a new ConcurrentAccessException. |
| * |
| * @param cause the underlying Throwable that caused this exception to be thrown. |
| */ |
| public ConcurrentAccessException(Throwable cause) { |
| super(cause); |
| } |
| |
| /** |
| * Constructs a new ConcurrentAccessException. |
| * |
| * @param message the reason for the exception |
| * @param cause the underlying Throwable that caused this exception to be thrown. |
| */ |
| public ConcurrentAccessException(String message, Throwable cause) { |
| super(message, cause); |
| } |
| |
| } |