Validation of xs:keys and xs:keyrefs with xpath takes too long
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Key: XERCESC-1878
URL: https://issues.apache.org/jira/browse/XERCESC-1878
Project: Xerces-C++
Issue Type: Bug
Components: Validating Parser (XML Schema)
Affects Versions: 3.0.1
Environment: Scientific Linux 5.2, x86_64, GCC 4.4.0
Reporter: Marc Sturm
When an mzML XML file against its schema, the validation of the xs:keys and
xs:keyrefs using xpath takes 40 to 60 minutes. Validation without keys only
takes about 30 seconds.
The following files can be used to reproduce the problem:
http://www-bs2.informatik.uni-tuebingen.de/services/sturm/public/example.mzML
(XML instance document)
http://www-bs2.informatik.uni-tuebingen.de/services/sturm/public/mzML110.xsd
(slow validation schema)
http://www-bs2.informatik.uni-tuebingen.de/services/sturm/public/mzML110_without_constraints.xsd
(fast validation schema)
I confirmed the behavior in version 3.0.0, 3.0.1 and Trunk revision 794181.
This is the C++ code used for the validation is:
//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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