Failure of XercesDOMParser->parse function

[Sharma, Gaurav]

Hi All,


I am using XercesDOMParser to parse xml file with validation turn on. With 
following snippets of code

std::auto_ptr<xercesc::XercesDOMParser> parser(new xercesc::XercesDOMParser(0,
                                                                               
xercesc::XMLPlatformUtils::fgMemoryManager,                                     
                                          grammar_pool));

   parser->setDoNamespaces(true);
   parser->setValidationScheme(xercesc::XercesDOMParser::Val_Always);
   parser->setDoSchema(true);
   parser->setValidationSchemaFullChecking(true);
   parser->setIncludeIgnorableWhitespace(false);
   parser->setCreateCommentNodes(false);
   parser->cacheGrammarFromParse(true);
   parser->useCachedGrammarInParse(true);
   parser->setLoadSchema(false);
   parser->setHandleMultipleImports(true);
   parser->setErrorHandler(&errhandler);
   parser->parse(xml_buffer);
   if (parser->getErrorCount() > 0)
   {
        //throw exception
   }

Where errhandler is object of the following class

class ClgnDOMErrorHandler : public xercesc::ErrorHandler
{
public:
   ClgnDOMErrorHandler()
   {}
   ~ClgnDOMErrorHandler()
   {}
   void ClgnDOMErrorHandler::warning(const xercesc::SAXParseException&)
   {
      // Ignore all warnings.
   }
   void error(const xercesc::SAXParseException& toCatch)
   {
        // Throw proper exception
   }
   void fatalError(const xercesc::SAXParseException& toCatch)
   {
        // Throw proper exception
   }
   void ClgnDOMErrorHandler::resetErrors()
   {

   }  
};

My problem is that if the input xml_buffer is not valid as per the schema(like 
and tag is missing or tag is un terminated) then it properly goes to 
errhandler's error function. But something weird is happening now and parse() 
function is failing and its not going to errhandlers' error() function and 
instead coming to   
if (parser->getErrorCount() > 0). Though this condition was put here to trap 
some unhandled error but now I am stuck how to know whats the error:)

Is there any way I can trap the exact error with parse() function.

Thanks & Regards
Gaurav Sharma

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