context = new LinkedList();
attributes = new ArrayList();
String uri = XMLConstants.W3C_XML_SCHEMA_NS_URI;
DatatypeLibrary library =
(new DatatypeLibraryLoader()).createDatatypeLibrary(uri);
if (library == null)
library = new gnu.xml.validation.datatype.TypeLibraryFactory().
createDatatypeLibrary(uri);
typeLibrary = library;
}