- /*
- * $Header$
- * $Revision$
- * $Date$
- *
- * ====================================================================
- *
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2002 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution, if
- * any, must include the following acknowlegement:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowlegement may appear in the software itself,
- * if and wherever such third-party acknowlegements normally appear.
- *
- * 4. The names "The Jakarta Project", "Commons", and "Apache Software
- * Foundation" must not be used to endorse or promote products derived
- * from this software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- * nor may "Apache" appear in their names without prior written
- * permission of the Apache Group.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- *
- */
-
- package org.apache.commons.discovery;
-
-
- /**
- * <p>An exception that is thrown only if a suitable service
- * instance cannot be created by <code>ServiceFactory</code></p>
- *
- * <p>Copied from LogConfigurationException<p>
- *
- * @author Craig R. McClanahan
- * @version $Revision$ $Date$
- */
- public class DiscoveryException extends RuntimeException {
-
-
- /**
- * Construct a new exception with <code>null</code> as its detail message.
- */
- public DiscoveryException() {
- super();
- }
-
- /**
- * Construct a new exception with the specified detail message.
- *
- * @param message The detail message
- */
- public DiscoveryException(String message) {
- super(message);
- }
-
- /**
- * Construct a new exception with the specified cause and a derived
- * detail message.
- *
- * @param cause The underlying cause
- */
- public DiscoveryException(Throwable cause) {
- this((cause == null) ? null : cause.toString(), cause);
- }
-
- /**
- * Construct a new exception with the specified detail message and cause.
- *
- * @param message The detail message
- * @param cause The underlying cause
- */
- public DiscoveryException(String message, Throwable cause) {
- super(message);
- this.cause = cause; // Two-argument version requires JDK 1.4 or later
- }
-
- /**
- * The underlying cause of this exception.
- */
- protected Throwable cause = null;
-
- /**
- * Return the underlying cause of this exception (if any).
- */
- public Throwable getCause() {
- return this.cause;
- }
-
- public String toString() {
- String ls = System.getProperty("line.separator");
- String str = super.toString();
- if (cause != null) {
- str = str + ls +
- "*****" + ls +
- stackToString(cause);
- }
- return str;
- }
-
- private static String stackToString(Throwable e){
- java.io.StringWriter sw= new java.io.StringWriter(1024);
- java.io.PrintWriter pw= new java.io.PrintWriter(sw);
- e.printStackTrace(pw);
- pw.close();
- return sw.toString();
- }
- }