function execute( $par ) {
global $wgRequest, $wgOut, $smwgARC2StoreConfig,
$wgServer, $wgScriptPath, $wgUser;
$this->setHeaders();
$output = "";
# Get request data from, e.g.
$rdfio_action = $wgRequest->getText( 'rdfio_action' );
# instantiation
$store = ARC2::getStore( $smwgARC2StoreConfig );
$output .= "\n===RDF Store Setup===\n'''Status:'''\n\n";
if ( !$store->isSetUp() ) {
$output .= "* Store is '''not''' set up\n";
if ( $rdfio_action == "setup" ) {
if ( !$wgUser->matchEditToken( $wgRequest->getText( 'token' ) ) ) {
die( 'Cross-site request forgery detected!' );
} else {
if ( $this->m_issysop ) {
$output .= "* Setting up now ...\n";
$store->setUp();
$output .= "* Done!\n";
} else {
$errormessage = "Only sysops can perform this operation!";
$wgOut->addHTML( RDFIOUtils::formatErrorHTML( "Permission Error", $errormessage ) );
}
}
}
} else {
$output .= "* Store is already set up.\n";
}
$wgOut->addWikiText( $output );
$htmlOutput = '<form method="get" action="' . $wgServer . $wgScriptPath . '/index.php/Special:ARC2Admin"
name="createEditQuery">
<input type="submit" name="rdfio_action" value="setup">' .
Html::Hidden( 'token', $wgUser->editToken() ) . '
</form>';
$wgOut->addHTML( $htmlOutput );
}
function execute( $par ) {
global $wgOut, $wgUser;
$this->setHeaders();
$this->handleRequestData();
$showscreensonly = false;
if ( $this->m_action == 'Import' ) {
if ( !$wgUser->matchEditToken( $this->m_edittoken ) ) {
die( 'Cross-site request forgery detected!' );
} elseif ( !$this->m_haswriteaccess ) {
$errortitle = "Permission error";
$errormessage = "The current user lacks access either to edit or create pages (or both) in this wiki.";
$wgOut->addHTML( RDFIOUtils::formatErrorHTML( $errortitle, $errormessage ) );
$this->outputHTMLForm();
} else {
$this->initSMWBatchWriter();
$existunabbrpropertyuris = $this->m_smwbatchwriter->checkForNamespacesWithoutPrefix();
$abbreviateuriscreen = '';
$unabbrentityurilist = '';
if ( $existunabbrpropertyuris && $this->m_show_abbrscreen_properties ) {
$suggestedbaseuris = $this->m_smwbatchwriter->getNamespacesWithoutPrefix();
$abbreviateuriscreen = $this->generateURIAbbreviationScreen( $suggestedbaseuris );
$showscreensonly = true;
}
if ( $this->m_show_abbrscreen_entities ) {
$unabbrentityuris = $this->m_smwbatchwriter->getUnabbrEntityURIs();
$unabbrentityurilist = $this->generateUnabbrEntityList( $unabbrentityuris );
$showscreensonly = true;
}
if ( $showscreensonly ) {
$contentbeforehtmlform = $abbreviateuriscreen . "\n" . $unabbrentityurilist;
$wgOut->addHTML( $this->getHTMLFormContent( $contentbeforehtmlform ) );
} else {
$this->executeSMWBatchWriter();
}
}
} elseif ( $this->m_action == 'AddNsPrefixes' ) {
$this->addNewNsPrefixes();
$this->executeSMWBatchWriter();
} else {
$this->outputHTMLForm();
}
}
/**
* Delete the facts stored in page handlers, from the wiki
*/
private function deletePageDataFromWiki() {
global $wgOut;
$pages = $this->m_pages;
foreach ( $pages as $page ) {
$page->deleteDataFromWiki();
if ( $page->hasErrors() ) {
$errortitle = "Error for wikipage \"" . $page->getWikiTitleFull() . "\"</h3>";
$wgOut->addHTML( RDFIOUtils::formatErrorHTML( $errortitle, $page->getErrorText() ) );
}
}
}
function failMsg($message)
{
global $wgOut;
$errorHtml = RDFIOUtils::formatErrorHTML("Error!", $message);
$wgOut->addHTML($errorHtml);
}
/**
* Check if deleting from wiki is allowed, and handle a number
* of exceptions to that, by showing error messages etc
*/
function checkAllowDelete() {
global $wgRequest, $wgUser, $wgOut, $rdfiogAllowRemoteEdit;
if ( !$wgUser->matchEditToken( $wgRequest->getText( 'token' ) ) &&
!$rdfiogAllowRemoteEdit ) {
die( 'Cross-site request forgery detected!' );
} else {
if ( $this->m_hasdeleteaccess || $rdfiogAllowRemoteEdit ) {
return true;
} else {
$errortitle = "Permission error";
$errormessage = "The current user lacks access either to edit or delete pages (or both) in this wiki.";
$wgOut->addHTML( RDFIOUtils::formatErrorHTML( $errortitle, $errormessage ) );
return false;
}
}
}
static function showErrorMessage( $title, $message ) {
global $wgOut;
$errorhtml = RDFIOUtils::formatErrorHTML( $title, $message );
$wgOut->addHTML( $errorhtml );
}
protected function import($limit = 10, $offset = 0)
{
global $wgOut, $wgRequest;
//$rdfioUtils = new RDFIOUtils();
$externalSparqlUrl = $wgRequest->getText('extsparqlurl');
if ($externalSparqlUrl === '') {
throw new RDFIOException('Empty SPARQL Url provided!');
} else {
if (!RDFIOUtils::isURI($externalSparqlUrl)) {
throw new RDFIOException('Invalid SPARQL Url provided! (Must start with \'http://\' or \'https://\')');
}
}
$sparqlQuery = urlencode("SELECT DISTINCT * WHERE { ?s ?p ?o } OFFSET {$offset} LIMIT {$limit}");
$sparqlQueryUrl = $externalSparqlUrl . '/' . '?query=' . $sparqlQuery;
$sparqlResultXml = file_get_contents($sparqlQueryUrl);
$sparqlResultXmlObj = simplexml_load_string($sparqlResultXml);
$importTriples = array();
if (is_object($sparqlResultXmlObj)) {
foreach ($sparqlResultXmlObj->results->children() as $result) {
$triple = array();
// $wgOut->addHTML( print_r($result, true) );
foreach ($result as $binding) {
if ($binding['name'] == 's') {
$s = (string) $binding->uri[0];
if ($s == '') {
throw new Exception('Could not extract subject from empty string (' . print_r($binding->uri, true) . '), in SPARQLImport');
}
$triple['s'] = $s;
$triple['s_type'] = $this->resourceType($triple['s']);
} else {
if ($binding['name'] == 'p') {
$p = (string) $binding->uri[0];
if ($p == '') {
throw new Exception('Could not extract predicate from empty string (' . print_r($binding->uri, true) . '), in SPARQLImport');
}
$triple['p'] = $p;
$triple['p_type'] = $this->resourceType($triple['p']);
} else {
if ($binding['name'] == 'o') {
$o = (string) $binding->uri[0];
if ($o == '') {
throw new Exception('Could not extract object from empty string (' . print_r($binding->uri, true) . '), in SPARQLImport');
}
$triple['o'] = $o;
$triple['o_type'] = $this->resourceType($triple['o']);
$triple['o_datatype'] = '';
}
}
}
}
$importTriples[] = $triple;
}
$rdfImporter = new RDFIORDFImporter();
$rdfImporter->importTriples($importTriples);
$wgOut->addHTML($rdfImporter->showImportedTriples($importTriples));
} else {
RDFIOUtils::formatErrorHTML("Error", "There was a problem importing from the endpoint. Are you sure that the given URL is a valid SPARQL endpoint?");
}
return $output = array('externalSparqlUrl' => $externalSparqlUrl);
}
