public static function getInstance()
{
if (is_null(self::$instance)) {
self::$instance = new self();
}
return self::$instance;
}
public function updateData(SMWSemanticData $data, $store)
{
//get list of properties which are set by this article
//todo: think about only querying for modified properties
$properties = $data->getProperties();
foreach ($properties as $name => $property) {
//ignore internal properties
if (!$property->isUserDefined() || $name == QRC_HQID_LABEL) {
unset($properties[$name]);
}
}
//determine differences between the new and the original semantic data
global $wgTitle;
if ($wgTitle) {
$originalData = $store->getSemanticData($wgTitle);
foreach ($originalData->getProperties() as $oName => $oProperty) {
if (array_key_exists($oName, $properties)) {
$oValues = $originalData->getPropertyValues($oProperty);
$values = $data->getPropertyValues($properties[$oName]);
if (count($oValues) == count($values)) {
$oWikiValues = array();
foreach ($oValues as $key => $value) {
$oWikiValues[$value->getWikiValue()] = true;
}
$wikiValues = array();
foreach ($values as $key => $value) {
$wikiValues[$value->getWikiValue()] = true;
}
$unset = true;
foreach (array_keys($values) as $value) {
if (!array_key_exists($value, $oWikiValues)) {
$unset = false;
break;
}
}
if ($unset) {
unset($properties[$oName]);
}
}
//echo('<pre>'.print_r($oProperty, true).'</pre>');
//echo('<pre>'.print_r(, true).'</pre>');
} else {
if ($oProperty->isUserDefined() && $name != QRC_HQID_LABEL) {
$properties[$oName] = $oProperty;
}
}
}
}
//deal with categories and determine which queries to update
$categories = array();
global $wgParser;
if ($wgParser && $wgParser->getOutput() && $wgTitle) {
$categories = $wgParser->getOutput()->getCategories();
$originalCategories = $wgTitle->getParentCategories();
//echo('<pre>'.print_r($originalCategories, true).'</pre>');
foreach (array_keys($originalCategories) as $category) {
$category = substr($category, strpos($category, ':') + 1);
if (array_key_exists($category, $categories)) {
unset($categories[$category]);
} else {
$categories[$category] = true;
}
}
}
//echo('<pre>'.print_r(array_keys($categories), true).'</pre>');
//echo('<pre>'.print_r(array_keys($properties), true).'</pre>');
if (count($properties) > 0 || count($categories) > 0) {
//query for all articles that use a query which depends on one of the properties
$queryString = SMWQRCQueryManagementHandler::getInstance()->getSearchQueriesAffectedByDataModification(array_keys($properties), array_keys($categories));
SMWQueryProcessor::processFunctionParams(array($queryString), $queryString, $params, $printouts);
$query = SMWQueryProcessor::createQuery($queryString, $params);
$queryResults = $this->getQueryResult($query, true, false)->getResults();
//get query ids which have to be invalidated
$queryIds = array();
foreach ($queryResults as $queryResult) {
$semanticData = $store->getSemanticData($queryResult);
$invalidatePC = false;
$tQueryIds = SMWQRCQueryManagementHandler::getInstance()->getIdsOfQueriesUsingProperty($semanticData, $properties);
if (count($tQueryIds) > 0) {
$invalidatePC = true;
}
$queryIds = array_merge($queryIds, $tQueryIds);
$tQueryIds = SMWQRCQueryManagementHandler::getInstance()->getIdsOfQueriesUsingCategory($semanticData, $categories);
if (count($tQueryIds) > 0) {
$invalidatePC = true;
}
$queryIds = array_merge($queryIds, $tQueryIds);
global $invalidateParserCache, $showInvalidatedCacheEntries;
if ($invalidatePC && $invalidateParserCache && !$showInvalidatedCacheEntries) {
$title = $queryResult->getTitle();
$title->invalidateCache();
}
}
$qrcStore = SMWQRCStore::getInstance()->getDB();
$qrcStore->invalidateQueryData($queryIds);
}
return $store->doUpdateData($data);
}