XML validations using XSD

[Shalmi <sh...@gmail.com>]

Hi,

I'm new to XML and xerces field. I want to write a code that will validate
"Books.xml" against "Books.xsd".
I have tried doing the following but I always get SAXException. Please guide
me whether I'm missing some steps or doing some thing wrong( or just in case
if the i/p XML and XSD file are wrong)

Code :-
Try 1 - 
try{
InputSource * is = new LocalFileInputSource((XalanDOMChar
*)"http://www.w3.org/2001/XMLSchema");
parser->setValidationScheme(XercesDOMParser::Val_Always);
parser->setDoNamespaces(true);
parser->setDoValidation(true);
parser->setDoSchema(true);
ErrorHandler* errHandler = (ErrorHandler*) new HandlerBase();
parser->setErrorHandler(errHandler);
parser->setExternalNoNamespaceSchemaLocation("Books.xsd");
parser->loadGrammar(*is,Grammar::SchemaGrammarType, true); 
parser->parse("Books.xml");
}
catch (const XMLException& toCatch) { 
char* message = XMLString::transcode(toCatch.getMessage()); 
cout << "Exception message is: \n" 
 << message << "\n"; 
XMLString::release(&message);           
} 
catch (const DOMException& toCatch) { 
char* message = XMLString::transcode(toCatch.msg); 
cout << "Exception message is: \n" 
       << message << "\n"; 
XMLString::release(&message);           
} 
catch(const SAXParseExceptionType &theException)
{
cerr << "SAXParseExceptionType exception: ";
cerr<<theException.getLineNumber()<<endl;
cerr<<theException.getSystemId ()<<endl; 
}
catch(...)
{
cerr << "Generic exception caught!" << endl;
return -1;
}
------------------------------------------------------------------------------------------------------
Try 2 - 
ErrorHandler  * handler =  new HandlerBase ();
//	XalanSourceTreeParserLiaison TheParser;
	XalanSourceTreeDOMSupport		theDOMSupport(TheParser);
try{
XMLPlatformUtils::Initialize();
//XercesParserLiaison TheParser;// One more doubt if i use this instead of
XalanSourceTreeParserLiaison i get runtime error of calling pure virtual
function.Why??
XalanSourceTreeParserLiaison TheParser;
const XalanDOMString	theXSDName("Books.xsd");
TheParser.setExternalSchemaLocation(theXSDName.c_str());
const XalanDOMString	theXSDURIName("http://www.w3.org/2001/XMLSchema");
TheParser.setUseValidation(true);
TheParser.setDoNamespaces(true);
TheParser.setErrorHandler (handler);
TheParser.setExternalNoNamespaceSchemaLocation(theXSDURIName.c_str());
const XalanDOMChar * temp1 =
TheParser.getExternalNoNamespaceSchemaLocation();
XalanDOMString temp (temp1);
cout<<temp;
const XalanDOMString	theFileName("Books.xml");
// Create an input source that represents a local file...
const LocalFileInputSource	theInputSource(theFileName.c_str());
XalanDocument * ParsedDocument =
TheParser.parseXMLStream(theInputSource,theXSDName);
if(ParsedDocument != NULL)
    cout<<"Valid XML"<<endl;
else
   cout<<"Invalid XML"<<endl;

TheParser.destroyDocument(ParsedDocument);
XMLPlatformUtils::Terminate();
}
catch(const SAXParseExceptionType &theException)
{
cerr << "SAXParseExceptionType exception: ";
cerr<<theException.getLineNumber()<<endl;
cerr<<theException.getSystemId ()<<endl; 
return -1;
}
catch(...)
{
cerr << "Generic exception caught!" << endl;
return -1;
}



http://www.nabble.com/file/p12307218/Books.xml Books.xml 
http://www.nabble.com/file/p12307218/Books.xsd Books.xsd 
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