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// SAX exception class. // http://www.saxproject.org // No warranty; no copyright -- use this as you will. // $Id: SAXException.java,v 1.3 2004/11/03 22:55:32 jsuttor Exp $ package org.xml.sax; /** * Encapsulate a general SAX error or warning. * * <blockquote> * <em>This module, both source code and documentation, is in the * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em> * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a> * for further information. * </blockquote> * * <p>This class can contain basic error or warning information from * either the XML parser or the application: a parser writer or * application writer can subclass it to provide additional * functionality. SAX handlers may throw this exception or * any exception subclassed from it.</p> * * <p>If the application needs to pass through other types of * exceptions, it must wrap those exceptions in a SAXException * or an exception derived from a SAXException.</p> * * <p>If the parser or application needs to include information about a * specific location in an XML document, it should use the * {@link org.xml.sax.SAXParseException SAXParseException} subclass.</p> * * @since SAX 1.0 * @author David Megginson * @version 2.0.1 (sax2r2) * @see org.xml.sax.SAXParseException */ public class SAXException extends Exception { /** * Create a new SAXException. */ public SAXException () { super(); this.exception = null; } /** * Create a new SAXException. * * @param message The error or warning message. */ public SAXException (String message) { super(message); this.exception = null; } /** * Create a new SAXException wrapping an existing exception. * * <p>The existing exception will be embedded in the new * one, and its message will become the default message for * the SAXException.</p> * * @param e The exception to be wrapped in a SAXException. */ public SAXException (Exception e) { super(); this.exception = e; } /** * Create a new SAXException from an existing exception. * * <p>The existing exception will be embedded in the new * one, but the new exception will have its own message.</p> * * @param message The detail message. * @param e The exception to be wrapped in a SAXException. */ public SAXException (String message, Exception e) { super(message); this.exception = e; } /** * Return a detail message for this exception. * * <p>If there is an embedded exception, and if the SAXException * has no detail message of its own, this method will return * the detail message from the embedded exception.</p> * * @return The error or warning message. */ public String getMessage () { String message = super.getMessage(); if (message == null && exception != null) { return exception.getMessage(); } else { return message; } } /** * Return the embedded exception, if any. * * @return The embedded exception, or null if there is none. */ public Exception getException () { return exception; } /** * Override toString to pick up any embedded exception. * * @return A string representation of this exception. */ public String toString () { if (exception != null) { return exception.toString(); } else { return super.toString(); } } ////////////////////////////////////////////////////////////////////// // Internal state. ////////////////////////////////////////////////////////////////////// /** * @serial The embedded exception if tunnelling, or null. */ private Exception exception; // Added serialVersionUID to preserve binary compatibility static final long serialVersionUID = 583241635256073760L; } // end of SAXException.java