001: /* ====================================================================
002: * The Apache Software License, Version 1.1
003: *
004: * Copyright (c) 1997-2003 The Apache Software Foundation. All rights
005: * reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * 1. Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * 2. Redistributions in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * 3. The end-user documentation included with the redistribution,
020: * if any, must include the following acknowledgment:
021: * "This product includes software developed by the
022: * Apache Software Foundation (http://www.apache.org/)."
023: * Alternately, this acknowledgment may appear in the software
024: * itself, if and wherever such third-party acknowledgments
025: * normally appear.
026: *
027: * 4. The names "Jakarta", "Avalon", and "Apache Software Foundation"
028: * must not be used to endorse or promote products derived from this
029: * software without prior written permission. For written
030: * permission, please contact apache@apache.org.
031: *
032: * 5. Products derived from this software may not be called "Apache",
033: * nor may "Apache" appear in their name, without prior written
034: * permission of the Apache Software Foundation.
035: *
036: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
040: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047: * SUCH DAMAGE.
048: * ====================================================================
049: *
050: * This software consists of voluntary contributions made by many
051: * individuals on behalf of the Apache Software Foundation. For more
052: * information on the Apache Software Foundation, please see
053: * <http://www.apache.org/>.
054: */
055: package org.jicarilla.lang;
056:
057: /**
058: * <p>Class from which all errors should inherit. Allows recording of nested
059: * exceptions in a pre-jdk-1.4 environment.</p>
060: *
061: * <p>This class originally came from the Apache Avalon server framework at <a
062: * href="http://avalon.apache.org/">http://avalon.apache.org/</a>. It has been
063: * included here so that a dependency on avalon-framework.jar is not neccessary
064: * in Jicarilla's core.</p>
065: *
066: * @author <a href="mailto:dev@avalon.apache.org">Avalon Development Team</a>
067: * @version $Id: CascadingError.java,v 1.1 2004/03/23 13:37:56 lsimons Exp $
068: */
069: public class CascadingError extends Error implements CascadingThrowable {
070: protected final Throwable m_throwable;
071:
072: /**
073: * Construct a new <code>CascadingError</code> instance.
074: */
075: public CascadingError() {
076: super ();
077: m_throwable = null;
078: }
079:
080: /**
081: * Construct a new <code>CascadingError</code> instance.
082: *
083: * @param throwable the root cause of the exception.
084: */
085: public CascadingError(final Throwable throwable) {
086: super ();
087: m_throwable = throwable;
088: }
089:
090: /**
091: * Construct a new <code>CascadingError</code> instance.
092: *
093: * @param message the detail message for this exception.
094: */
095: public CascadingError(final String message) {
096: this (message, null);
097: }
098:
099: /**
100: * Construct a new <code>CascadingError</code> instance.
101: *
102: * @param message the detail message for this exception.
103: * @param throwable the root cause of the exception.
104: */
105: public CascadingError(final String message,
106: final Throwable throwable) {
107: super (message);
108: m_throwable = throwable;
109: }
110:
111: /**
112: * Retrieve root cause of the error.
113: *
114: * @return the root cause for this error.
115: */
116: public final Throwable getCause() {
117: if (m_throwable != null)
118: return m_throwable;
119: else
120: return super.getCause();
121: }
122: }
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