org.xml.sax.SAXException Maven / Gradle / Ivy
// SAX exception class.
// No warranty; no copyright -- use this as you will.
// $Id: SAXException.java,v 1.4 2000/05/05 17:47:20 david Exp $
package org.xml.sax;
/**
* Encapsulate a general SAX error or warning.
*
*
* This module, both source code and documentation, is in the
* Public Domain, and comes with NO WARRANTY.
*
*
* 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.
*
* 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.
*
* 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.
*
* @since SAX 1.0
* @author David Megginson,
* [email protected]
* @version 2.0
* @see org.xml.sax.SAXParseException
*/
public class SAXException extends Exception {
/**
* Create a new SAXException.
*
* @param message The error or warning message.
* @see org.xml.sax.Parser#setLocale
*/
public SAXException (String message) {
super(message);
this.exception = null;
}
/**
* Create a new SAXException wrapping an existing exception.
*
* The existing exception will be embedded in the new
* one, and its message will become the default message for
* the SAXException.
*
* @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.
*
* The existing exception will be embedded in the new
* one, but the new exception will have its own message.
*
* @param message The detail message.
* @param e The exception to be wrapped in a SAXException.
* @see org.xml.sax.Parser#setLocale
*/
public SAXException (String message, Exception e)
{
super(message);
this.exception = e;
}
/**
* Return a detail message for this exception.
*
* 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.
*
* @return The error or warning message.
* @see org.xml.sax.Parser#setLocale
*/
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;
}
// end of SAXException.java