| /* |
| * Copyright 2004-2005 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.tiles; |
| |
| /** |
| * Root class for all Tiles-exceptions. |
| * @author Cedric Dumoulin |
| */ |
| public class TilesException extends Exception |
| { |
| |
| |
| /** |
| * Any "wrapped" exception will be exposed when this is serialized. |
| * @serial |
| */ |
| private Exception exception; |
| /** |
| * Constructor. |
| */ |
| public TilesException() { |
| super(); |
| this.exception = null; |
| } |
| |
| /** |
| * Constructor. |
| * @param message The error or warning message. |
| */ |
| public TilesException(String message) { |
| super(message); |
| this.exception = null; |
| } |
| |
| |
| /** |
| * Create a new <code>TilesException</code> wrapping an existing exception. |
| * |
| * <p>The existing exception will be embedded in the new |
| * one, and its message will become the default message for |
| * the TilesException.</p> |
| * |
| * @param e The exception to be wrapped. |
| */ |
| public TilesException(Exception e) { |
| super(); |
| this.exception = e; |
| } |
| |
| |
| /** |
| * Create a new <code>TilesException</code> from an existing exception. |
| * |
| * <p>The existing exception will be embedded in the new |
| * one, but the new exception will have its own message.</p> |
| * |
| * @param message The detail message. |
| * @param e The exception to be wrapped. |
| */ |
| public TilesException(String message, Exception e) { |
| super(message); |
| this.exception = e; |
| } |
| |
| |
| /** |
| * Return a detail message for this exception. |
| * |
| * <p>If there is a embedded exception, and if the TilesException |
| * has no detail message of its own, this method will return |
| * the detail message from the embedded exception.</p> |
| * |
| * @return The error or warning message. |
| */ |
| public String getMessage () { |
| String message = super.getMessage (); |
| |
| if (message == null && exception != null) { |
| return exception.getMessage(); |
| } else { |
| return message; |
| } |
| } |
| |
| |
| /** |
| * Return the embedded exception, if any. |
| * |
| * @return The embedded exception, or <code>null</code> if there is none. |
| */ |
| public Exception getException () { |
| return exception; |
| } |
| |
| } |