001 /*
002 * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package javax.xml.xpath;
027
028 import java.io.PrintWriter;
029
030 /**
031 * <code>XPathException</code> represents a generic XPath exception.</p>
032 *
033 * @author <a href="Norman.Walsh@Sun.com">Norman Walsh</a>
034 * @author <a href="mailto:Jeff.Suttor@Sun.COM">Jeff Suttor</a>
035 * @version $Revision: 1.2 $, $Date: 2005/06/10 03:50:44 $
036 * @since 1.5
037 */
038 public class XPathException extends Exception {
039
040 private final Throwable cause;
041
042 /**
043 * <p>Stream Unique Identifier.</p>
044 */
045 private static final long serialVersionUID = -1837080260374986980L;
046
047 /**
048 * <p>Constructs a new <code>XPathException</code>
049 * with the specified detail <code>message</code>.</p>
050 *
051 * <p>The <code>cause</code> is not initialized.</p>
052 *
053 * <p>If <code>message</code> is <code>null</code>,
054 * then a <code>NullPointerException</code> is thrown.</p>
055 *
056 * @param message The detail message.
057 *
058 * @throws NullPointerException When <code>message</code> is
059 * <code>null</code>.
060 */
061 public XPathException(String message) {
062 super (message);
063 if (message == null) {
064 throw new NullPointerException("message can't be null");
065 }
066 this .cause = null;
067 }
068
069 /**
070 * <p>Constructs a new <code>XPathException</code>
071 * with the specified <code>cause</code>.</p>
072 *
073 * <p>If <code>cause</code> is <code>null</code>,
074 * then a <code>NullPointerException</code> is thrown.</p>
075 *
076 * @param cause The cause.
077 *
078 * @throws NullPointerException if <code>cause</code> is <code>null</code>.
079 */
080 public XPathException(Throwable cause) {
081 super ();
082 this .cause = cause;
083 if (cause == null) {
084 throw new NullPointerException("cause can't be null");
085 }
086 }
087
088 /**
089 * <p>Get the cause of this XPathException.</p>
090 *
091 * @return Cause of this XPathException.
092 */
093 public Throwable getCause() {
094 return cause;
095 }
096
097 /**
098 * <p>Print stack trace to specified <code>PrintStream</code>.</p>
099 *
100 * @param s Print stack trace to this <code>PrintStream</code>.
101 */
102 public void printStackTrace(java.io.PrintStream s) {
103 if (getCause() != null) {
104 getCause().printStackTrace(s);
105 s.println("--------------- linked to ------------------");
106 }
107
108 super .printStackTrace(s);
109 }
110
111 /**
112 * <p>Print stack trace to <code>System.err</code>.</p>
113 */
114 public void printStackTrace() {
115 printStackTrace(System.err);
116 }
117
118 /**
119 * <p>Print stack trace to specified <code>PrintWriter</code>.</p>
120 *
121 * @param s Print stack trace to this <code>PrintWriter</code>.
122 */
123 public void printStackTrace(PrintWriter s) {
124
125 if (getCause() != null) {
126 getCause().printStackTrace(s);
127 s.println("--------------- linked to ------------------");
128 }
129
130 super.printStackTrace(s);
131 }
132 }
|