[libxml-devel] validating a xml message with XML schema in multiple files

[Kamal]

Hi All,
I am validating a xml message with XML schema in multiple files. XML
message has no reference to schema.  I am getting "Element : No
matching global declaration available for the validation root.
schema error" error message.
Can you please tell me how to solve it.

I have given the source code here.
        xmlDocPtr schema_doc = xmlReadFile("fixml-main-4-4.xsd", NULL,
XML_PARSE_NONET);
    if (schema_doc == NULL) {
        /* the schema cannot be loaded or is not well-formed */
        return -1;
    }
    xmlSchemaParserCtxtPtr parser_ctxt = xmlSchemaNewDocParserCtxt
(schema_doc);
    if (parser_ctxt == NULL) {
        /* unable to create a parser context for the schema */
        xmlFreeDoc(schema_doc);
        return -2;
    }
    xmlSchemaPtr schema = xmlSchemaParse(parser_ctxt);
    if (schema == NULL) {
        /* the schema itself is not valid */
        xmlSchemaFreeParserCtxt(parser_ctxt);
        xmlFreeDoc(schema_doc);
        return -3;
    }
    xmlSchemaValidCtxtPtr valid_ctxt = xmlSchemaNewValidCtxt(schema);
    if (valid_ctxt == NULL) {
        /* unable to create a validation context for the schema */
        xmlSchemaFree(schema);
        xmlSchemaFreeParserCtxt(parser_ctxt);
        xmlFreeDoc(schema_doc);
        return -4;
    }

        xmlSchemaSetValidErrors(valid_ctxt, (xmlSchemaValidityErrorFunc)
fprintf, (xmlSchemaValidityWarningFunc) fprintf, stderr);

    doc = xmlReadMemory(buffer, size, "noname.xml", NULL, 0);
    if (doc == NULL) {
        fprintf(stderr, "Failed to parse document\n");
        return;
    }
#if 1
        int nRet;
        if((nRet = xmlSchemaValidateDoc(valid_ctxt, doc)) != 0)
        {
        fprintf(stderr, "schema error\n");
                return;
        }

#endif
        cur = xmlDocGetRootElement(doc);

        if (cur == NULL) {
                fprintf(stderr,"empty document\n");
                xmlFreeDoc(doc);
                return;
        }
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