DTD Validation failure (v2.1 loadGrammar to replace former reuseGrammar flag)

[Dupont, Sylvain]

I am trying to port an application from xerces 1.5.2 to 2.1, and I have some trouble with replacing the “reuseGrammar” flag that was previously available. We are trying to parse a DTD in memory and then to use this DTD to validate our documents.   The following used to work fine with v1.5.2:               #define AgCPluginsXmlDtd                                            \                 "<?xml version = \"1.0\" standalone = \"yes\"?>             "   \                 "<!DOCTYPE AGIRegistry [                                    "   \                 "   <!ELEMENT AGIRegistry (CategoryRegistry?, NoCategory?)> "   \                 "]>                                                         "   \               static char *g_sDoc =             "<?xml version = \"1.0\"?>                                       \n"             "<AGIRegistry>                                                   \n"             "</AGIRegistry>                                                  \n"             ;               void main()             {                 XMLPlatformUtils::Initialize();                             CAgSAXHandler handler;                   SAXParser parser;                 parser.setErrorHandler(&handler);                 parser.setValidationScheme(SAXParser::Val_Always);                 parser.setDoNamespaces(false);                   CAgMemBufInputSource dtdInputSource(AgCPluginsXmlDtd);                 parser.parse(dtdInputSource);                   CAgMemBufInputSource docInputSource(g_sDoc);                 parser.parse(docInputSource, true); // <<<<< reuseGrammar                   XMLPlatformUtils::Terminate();             }   Now when I try to use the loadGrammar replacement:               void main()             {                 XMLPlatformUtils::Initialize();                   CAgSAXHandler handler;                   SAXParser parser;                 parser.setErrorHandler(&handler);                 parser.setValidationScheme(SAXParser::Val_Always);                 parser.setDoNamespaces(false);                   CAgMemBufInputSource dtdInputSource(AgCPluginsXmlDtd);                 parser.loadGrammar(dtdInputSource, Grammar::DTDGrammarType, true);                 parser.useCachedGrammarInParse(true);                   CAgMemBufInputSource docInputSource(g_sDoc);                 parser.parse(docInputSource);                   XMLPlatformUtils::Terminate();             }   I get the following error:               ERROR : XML Parser - Line: 2, char 13             Unknown element 'AGIRegistry'   The DTD does not seem to be cached for the second parsing. What am I doing worng?   Thanks, Sylvain