| /* |
| * $Header: /cvshome/build/org.osgi.service.http/src/org/osgi/service/http/NamespaceException.java,v 1.9 2006/03/14 01:20:39 hargrave Exp $ |
| * |
| * Copyright (c) OSGi Alliance (2000, 2005). All Rights Reserved. |
| * |
| * 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.osgi.service.http; |
| |
| /** |
| * A NamespaceException is thrown to indicate an error with the caller's request |
| * to register a servlet or resources into the URI namespace of the Http |
| * Service. This exception indicates that the requested alias already is in use. |
| * |
| * @version $Revision: 1.9 $ |
| */ |
| public class NamespaceException extends Exception { |
| static final long serialVersionUID = 7235606031147877747L; |
| /** |
| * Nested exception. |
| */ |
| private Throwable cause; |
| |
| /** |
| * Construct a <code>NamespaceException</code> object with a detail message. |
| * |
| * @param message the detail message |
| */ |
| public NamespaceException(String message) { |
| super(message); |
| cause = null; |
| } |
| |
| /** |
| * Construct a <code>NamespaceException</code> object with a detail message |
| * and a nested exception. |
| * |
| * @param message The detail message. |
| * @param cause The nested exception. |
| */ |
| public NamespaceException(String message, Throwable cause) { |
| super(message); |
| this.cause = cause; |
| } |
| |
| /** |
| * Returns the nested exception. |
| * |
| * <p>This method predates the general purpose exception chaining mechanism. |
| * The {@link #getCause()} method is now the preferred means of |
| * obtaining this information. |
| * |
| * @return the nested exception or <code>null</code> if there is no nested |
| * exception. |
| */ |
| public Throwable getException() { |
| return cause; |
| } |
| |
| /** |
| * Returns the cause of this exception or <code>null</code> if no |
| * cause was specified when this exception was created. |
| * |
| * @return The cause of this exception or <code>null</code> if no |
| * cause was specified. |
| * @since 1.2 |
| */ |
| public Throwable getCause() { |
| return cause; |
| } |
| |
| /** |
| * The cause of this exception can only be set when constructed. |
| * |
| * @param cause Cause of the exception. |
| * @return This object. |
| * @throws java.lang.IllegalStateException |
| * This method will always throw an <code>IllegalStateException</code> |
| * since the cause of this exception can only be set when constructed. |
| * @since 1.2 |
| */ |
| public Throwable initCause(Throwable cause) { |
| throw new IllegalStateException(); |
| } |
| } |