| /* |
| * Copyright 2005-2008 Les Hazlewood |
| * |
| * 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.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. |
| * |
| * @since 0.1 |
| * @author Les Hazlewood |
| */ |
| 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 ); |
| } |
| |
| } |