Exceptions on Invalid XML Document

[Sudheer Tumuluru <st...@real.com>]

Hi,
        I wrote an XML DOM Parser with Xerces and it works just fine
when I pass a vaild document string to the parse() method. But it does
not throw any exception when an invalid document is passed. Later, when
I attempt to read it, DOM_Element::getTagName() throws a fatal error
which I couldn't catch by putting it in a "XMLException" try-catch
block. Should I be looking for any exceptions other than the
XMLException?

Thanks in advance,
Sudheer
--
  ------------------------------------------------------------------------
Sudheer Tumuluru
stumuluru@real.com
Software Development Engineer, Real Broadcast Network
RealNetworks Inc. http://www.realnetworks.com
  ------------------------------------------------------------------------

RE: Exceptions on Invalid XML Document

[John Roper <Jo...@iOra.com>]

Hi Sudheer,

You need to supply an error handler to the parser. Here's one I prepared
earlier that you are welcome to use.

Hope this helps

John Roper
iOra Ltd.
www.iora.com


class	CDOMErrorHandler : public ErrorHandler
{
public:
	CDOMErrorHandler()
	{
		resetErrors();
	}
	virtual ~CDOMErrorHandler()
	{
	}
	void	fatalError(const SAXParseException& e)
	{
		m_hadError = TRUE;
	}
	void	error(const SAXParseException& e)
	{
		m_hadError = TRUE;
	}
	void	warning(const SAXParseException& e)
	{
		m_hadError = TRUE;
	}
	void	resetErrors()
	{
		m_hadError = FALSE;
	}

	BOOL	m_hadError;
};

....
	try
	{
		DOMParser			Parser;
		CDOMErrorHandler	errorHandler;

		Parser.setErrorHandler( (ErrorHandler*) &errorHandler);
		Parser.parse( xmlFile );

		if ( errorHandler.m_hadError )
		{
			stop!!

-----Original Message-----
From: stumuluru@prognet.com [mailto:stumuluru@prognet.com]On Behalf Of
Sudheer Tumuluru
Sent: 26 July 2000 01:05
To: XML Apache Mailing List
Subject: Exceptions on Invalid XML Document


Hi,
        I wrote an XML DOM Parser with Xerces and it works just fine
when I pass a vaild document string to the parse() method. But it does
not throw any exception when an invalid document is passed. Later, when
I attempt to read it, DOM_Element::getTagName() throws a fatal error
which I couldn't catch by putting it in a "XMLException" try-catch
block. Should I be looking for any exceptions other than the
XMLException?

Thanks in advance,
Sudheer
--
  ------------------------------------------------------------------------
Sudheer Tumuluru
stumuluru@real.com
Software Development Engineer, Real Broadcast Network
RealNetworks Inc. http://www.realnetworks.com
  ------------------------------------------------------------------------


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