Hi
I have a DOM_Document and want to use a DOM_Element in that document. I
which to apply an XPath expression to any selected node in the DOM_Document.
Tried to use the SimpleXPathAPI example but I get a XPathParserException.
What am I doing wrong?? *XPathExp contains //
MY CODE!!!!!!!!!!!!!!!!
bool MyClass::XpathSolve(char *XPathExp)
{
XalanDOMString XPathEx(XPathExp);
int theResult = 0;
try
{
XMLPlatformUtils::Initialize();
XPathEvaluator::initialize();
{
// Initialize the XalanSourceTree subsystem...
XalanSourceTreeInit
theSourceTreeInit;
// We'll use these to parse the XML file.
XalanSourceTreeDOMSupport
theDOMSupport;
XalanSourceTreeParserLiaison
theLiaison(theDOMSupport);
//convert DOM to Xalan
XercesDocumentBridge *XDocBridge = new
XercesDocumentBridge(m_LoadDOMDocument); //convert DOM_Document
XercesBridgeNavigator *BridgeNav = new
XercesBridgeNavigator(XDocBridge);
XercesElementBridge *XElemBridge = new
XercesElementBridge(m_LoadActiveNode ,*BridgeNav); //convert DOM_Element
XalanElement* rootElem = XElemBridge;
// Hook the two together...
theDOMSupport.setParserLiaison(&theLiaison);
XPathEvaluator theEvaluator;
// OK, let's find the context node...
XalanNode* const theContextNode =
theEvaluator.selectSingleNode(
theDOMSupport,
rootElem,
XPathEx.c_str(),0);
if (theContextNode == 0)
{
cerr << "Warning -- No nodes matched
the location path" << endl;
}
else
{
// OK, let's evaluate the expression...
const XObjectPtr theResult(
theEvaluator.evaluate(
theDOMSupport,
theContextNode,
XPathEx.c_str(),
0));
assert(theResult.null() == false);
}
}
XPathEvaluator::terminate();
XMLPlatformUtils::Terminate();
}
catch(XPathParserException &e)
{
cerr << "XPATH-PARSER EXCEPTION" <<endl
<< e.getMessage().c_str() << endl
<< e.getType().c_str() <<endl
<< e.getLineNumber() <<endl
<< e.getColumnNumber() <<endl;
}
catch(const XPathException &e)
{
cerr << "XPATH EXCEPTION" <<endl
<< e.getMessage().c_str() << endl
<< e.getType().c_str() <<endl
<< e.getLineNumber() <<endl
<< e.getColumnNumber() <<endl;
}
catch(...)
{
cerr << "Exception caught!" << endl;
theResult = -1;
}
return theResult;
}
regards
Troels Rossing
QualiWare
Phone +45 45 47 07 46
