Hi Marc,
could you try with the current trunk of 3.x (the SVN repository is at
https://svn.apache.org/repos/asf/xerces/c/trunk)? There was an excessive
memory usage in identity validation that made performance degrade
exponentially.
Alberto
Marc Sturm wrote:
Hi all,
first, I' like to thank the developers for their effort. We use
Xerces-C a lot and are quite happy with it!
Recently we encountered a problem with the evaluation speed of
identity constraints (xs:key, xs:keyref, xpath) in Xerces-C 3.0.0.
At http://www-bs2.informatik.uni-tuebingen.de/services/sturm/public/
you can find an XML example file and two schema versions.
Validating the example without identity constraints takes about 30
seconds. With identity constraints it takes like an hour.
Is this a known problem, or do we do something wrong? I attached the
code used to perform the validation.
Thanks in advance,
Marc
---------------------------------------------------------------------------------
//initialize
try
{
XMLPlatformUtils::Initialize();
}
catch (const XMLException& toCatch)
{
//...
}
SAX2XMLReader* parser = XMLReaderFactory::createXMLReader();
parser->setFeature(XMLUni::fgSAX2CoreNameSpaces, true);
parser->setFeature(XMLUni::fgSAX2CoreValidation, true);
parser->setFeature(XMLUni::fgXercesDynamic, false);
parser->setFeature(XMLUni::fgXercesSchema, true);
parser->setFeature(XMLUni::fgXercesSchemaFullChecking, true);
//set this class as error handler
parser->setErrorHandler(this);
parser->setContentHandler(NULL);
parser->setEntityResolver(NULL);
//load schema
LocalFileInputSource schema_file(schema);
parser->loadGrammar(schema_file, Grammar::SchemaGrammarType, true);
parser->setFeature(XMLUni::fgXercesUseCachedGrammarInParse, true);
// try to validate the file
LocalFileInputSource source(filename);
try
{
parser->parse(source);
delete(parser);
}
catch (...)
{
///...
}
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