Last modified: 2010-08-30 10:00:16 UTC
MediaWiki 1.15.4 PHP 5.2.6-1+lenny8 (apache2handler) MySQL 5.0.51a-24 Semantic MediaWiki (verzió: 1.5.0_0) Steps to reproduce: 1. Install MediaWiki !>>set Hungarian as the language of the wiki<<! ---------------------- 2. Install Semantic Mediawiki extensions -------------------------- 3. export rdf of the main page (I do it with "Semantic Radar" Firefox extension ) <link rel="alternate" type="application/rdf+xml" title="Speciális:Névjegy" href="/Z/index.php?title=Speci%C3%A1lis:ExportRDF/Speci%C3%A1lis:N%C3%A9vjegy&xmlmime=rdf" /> ===================================== result: XML validation of generated RDF fails details: ------------------ -Fatal Error Messages FatalError: The parameter entity reference "%C3;" must end with the ';' delimiter.[Line = 7, Column = 56] ------------------------------------------------- -The original RDF/XML document 1: <?xml version="1.0" encoding="UTF-8"?> 2: <!DOCTYPE rdf:RDF[ 3: <!ENTITY rdf 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'> 4: <!ENTITY rdfs 'http://www.w3.org/2000/01/rdf-schema#'> 5: <!ENTITY owl 'http://www.w3.org/2002/07/owl#'> 6: <!ENTITY swivt 'http://semantic-mediawiki.org/swivt/1.0#'> 7: <!ENTITY wiki 'http://zolta.homelinux.org/Z/w/Speci%C3%A1lis:URIResolver/'> 8: <!ENTITY property 'http://zolta.homelinux.org/Z/w/Speci%C3%A1lis:URIResolver/Property-3A'> 9: <!ENTITY wikiurl 'http://zolta.homelinux.org/Z/w/'> 10: ]> 11: 12: <rdf:RDF 13: xmlns:rdf="&rdf;" 14: xmlns:rdfs="&rdfs;" 15: xmlns:owl ="&owl;" 16: xmlns:swivt="&swivt;" 17: xmlns:wiki="&wiki;" 18: xmlns:property="&property;"> 19: <!-- Ontology header --> 20: <owl:Ontology rdf:about="&wikiurl;Speci%C3%A1lis:ExportRDF/KezdQlap"> 21: <swivt:creationDate rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2010-07-02T16:18:23+02:00</swivt:creationDate> 22: <owl:imports rdf:resource="http://semantic-mediawiki.org/swivt/1.0" /> 23: </owl:Ontology>
EXPECTED urls in ENTITY declaration should be encoded with XML Character Reference á should be encoded á line 7 and 8 should be ------------------------ 7: <!ENTITY wiki 'http://zolta.homelinux.org/Z/w/Speciális:URIResolver/'> 8: <!ENTITY property 'http://zolta.homelinux.org/Z/w/Speciális:URIResolver/Property-3A'> =================================== Question 1. Where in the code jungle is the line we need to change 2. What PHP function does this encoding?
-I guess the problem is in $IP/extensions/SemanticMediaWiki/includes/export/SMW_Exporter.php ------------------------- -maybe the line: SMWExporter::encodeURI(urlencode(str_replace(' ', '_', $wgContLang->getNsText(SMW_NS_PROPERTY) . ':')));
You can check your exportRDF with this form : http://www.w3.org/RDF/Validator/
I found a quick fix. I added str_replace('%','%',URL) in the file include/export/SMW_OWLExport.php in the function printHeader. protected function printHeader( $ontologyuri = '' ) { global $wgContLang; $this->pre_ns_buffer .= "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" . "<!DOCTYPE rdf:RDF[\n" . "\t<!ENTITY rdf '" . SMWExporter::expandURI( '&rdf;' ) . "'>\n" . "\t<!ENTITY rdfs '" . SMWExporter::expandURI( '&rdfs;' ) . "'>\n" . "\t<!ENTITY owl '" . SMWExporter::expandURI( '&owl;' ) . "'>\n" . "\t<!ENTITY swivt '" . SMWExporter::expandURI( '&swivt;' ) . "'>\n" . // A note on "wiki": this namespace is crucial as a fallback when it would be illegal to start e.g. with a number. In this case, one can always use wiki:... followed by "_" and possibly some namespace, since _ is legal as a first character. "\t<!ENTITY wiki '" . str_replace('%','%',SMWExporter::expandURI( '&wiki;' )) . "'>\n" . "\t<!ENTITY property '" . str_replace('%','%',SMWExporter::expandURI( '&property;' )) . "'>\n" . "\t<!ENTITY wikiurl '" . str_replace('%','%',SMWExporter::expandURI( '&wikiurl;' )) . "'>\n" . "]>\n\n" . "<rdf:RDF\n" . "\txmlns:rdf=\"&rdf;\"\n" . "\txmlns:rdfs=\"&rdfs;\"\n" . "\txmlns:owl =\"&owl;\"\n" . "\txmlns:swivt=\"&swivt;\"\n" . "\txmlns:wiki=\"&wiki;\"\n" . "\txmlns:property=\"&property;\""; $this->global_namespaces = array( 'rdf' => true, 'rdfs' => true, 'owl' => true, 'swivt' => true, 'wiki' => true, 'property' => true ); $this->post_ns_buffer .= ">\n\t<!-- Ontology header -->\n" . "\t<owl:Ontology rdf:about=\"$ontologyuri\">\n" . "\t\t<swivt:creationDate rdf:datatype=\"http://www.w3.org/2001/XMLSchema#dateTime\">" . date( DATE_W3C ) . "</swivt:creationDate>\n" . "\t\t<owl:imports rdf:resource=\"http://semantic-mediawiki.org/swivt/1.0\" />\n" . "\t</owl:Ontology>\n" . "\t<!-- exported page data -->\n"; }
I have now implemented the above "quick fix" which I think is the proper way to solve the problem. The symbol % that is correctly used in the problematic URLs has a special meaning in XML ENTITY declarations and must be escaped in this way. The fix will be released with SMW 1.5.2.
