Wikimedia Bugzilla is closed!

Samuel, while trying to debug the SPARQL issue, I noticed this error:

[Tue Sep 27 10:55:20 2011] [error] [client 127.0.0.1] PHP Notice:  Undefined offset: 0 in /usr/local/share/mediawiki/RDFIO/classes/RDFStore.php on line 56, referer: http://127.0.0.1/mediawiki/index.php/Special:SPARQLEndpoint

which refers to this code:

    function getOrigURIForUri( $uri ) {
        $origuri = '';
        $store = $this->m_arcstore;
        $origuriuri = $this->getOrigURIURI();
        $q = "SELECT ?origuri WHERE { <$uri> <$origuriuri> ?origuri }";
        $rs = $store->query( $q );
        if ( !$store->getErrors() ) {
            $rows = $rs['result']['rows'];
            $row = $rows[0];
            $origuri = $row['origuri'];
        } else {
            die( "Error in ARC Store: " . print_r( $store->getErrors(), true ) );
        }
        return $origuri;
    }

Line 56 is the "$row = $rows[0];" line.

Not all resources have original URIs.