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/*
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* Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.xml.xpath;
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import java.io.PrintWriter;
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/**
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* <code>XPathException</code> represents a generic XPath exception.</p>
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*
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* @author <a href="Norman.Walsh@Sun.com">Norman Walsh</a>
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* @author <a href="mailto:Jeff.Suttor@Sun.COM">Jeff Suttor</a>
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* @since 1.5
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*/
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public class XPathException extends Exception {
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private final Throwable cause;
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/**
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* <p>Stream Unique Identifier.</p>
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*/
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private static final long serialVersionUID = -1837080260374986980L;
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/**
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* <p>Constructs a new <code>XPathException</code>
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* with the specified detail <code>message</code>.</p>
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*
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* <p>The <code>cause</code> is not initialized.</p>
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*
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* <p>If <code>message</code> is <code>null</code>,
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* then a <code>NullPointerException</code> is thrown.</p>
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*
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* @param message The detail message.
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*
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* @throws NullPointerException When <code>message</code> is
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* <code>null</code>.
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*/
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public XPathException(String message) {
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super(message);
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if ( message == null ) {
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throw new NullPointerException ( "message can't be null");
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}
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this.cause = null;
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}
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/**
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* <p>Constructs a new <code>XPathException</code>
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* with the specified <code>cause</code>.</p>
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*
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* <p>If <code>cause</code> is <code>null</code>,
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* then a <code>NullPointerException</code> is thrown.</p>
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*
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* @param cause The cause.
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*
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* @throws NullPointerException if <code>cause</code> is <code>null</code>.
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*/
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public XPathException(Throwable cause) {
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super();
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this.cause = cause;
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if ( cause == null ) {
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throw new NullPointerException ( "cause can't be null");
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}
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}
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/**
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* <p>Get the cause of this XPathException.</p>
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*
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* @return Cause of this XPathException.
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*/
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public Throwable getCause() {
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return cause;
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}
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/**
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* <p>Print stack trace to specified <code>PrintStream</code>.</p>
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*
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* @param s Print stack trace to this <code>PrintStream</code>.
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*/
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public void printStackTrace(java.io.PrintStream s) {
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if (getCause() != null) {
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getCause().printStackTrace(s);
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s.println("--------------- linked to ------------------");
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}
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super.printStackTrace(s);
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}
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/**
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* <p>Print stack trace to <code>System.err</code>.</p>
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*/
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public void printStackTrace() {
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printStackTrace(System.err);
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}
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/**
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* <p>Print stack trace to specified <code>PrintWriter</code>.</p>
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*
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* @param s Print stack trace to this <code>PrintWriter</code>.
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*/
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public void printStackTrace(PrintWriter s) {
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if (getCause() != null) {
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getCause().printStackTrace(s);
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s.println("--------------- linked to ------------------");
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}
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super.printStackTrace(s);
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}
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}
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