/**
* Delete all semantic data stored for the given subject. Used for
* update purposes. Handles Subobjects recursively
*
* @param $subject SMWDIWikiPage the data of which is deleted
*/
public function deleteSemanticData(SMWDIWikiPage $subject)
{
$db = wfGetDB(DB_MASTER);
$id = $this->store->smwIds->getSMWPageID($subject->getDBkey(), $subject->getNamespace(), $subject->getInterwiki(), $subject->getSubobjectName(), false, true);
if ($id == 0) {
// not (directly) used anywhere yet, may be a redirect but we do not care here
wfRunHooks('smwDeleteSemanticData', array($subject));
return;
}
//get oldData for diffing and updating property counts
$oldData = $this->store->getSemanticData($subject);
$this->doDiffandUpdateCount($oldData);
$oldHashes = $this->store->smwIds->getPropertyTableHashes($id);
foreach (SMWSQLStore3::getPropertyTables() as $tableId => $tableDeclaration) {
$tableName = $tableDeclaration->name;
if (array_key_exists($tableName, $oldHashes)) {
$this->deleteTableSemanticData($id, $tableDeclaration);
}
}
if ($subject->getSubobjectName() !== '') {
wfRunHooks('smwDeleteSemanticData', array($subject));
return;
// Subobjects don't have subsubobjects
}
// also find subobjects used by this ID ...
$oldSubobjects = $this->getSubobjects($subject);
// ... and delete their data as well recursively
foreach ($oldSubobjects as $subobject) {
$this->deleteSemanticData($subobject);
}
//TODO: delete all unused subobjects
wfRunHooks('smwDeleteSemanticData', array($subject));
}
private function addSubSemanticDataToInternalCache(DIProperty $property)
{
foreach ($this->getPropertyValues($property) as $value) {
if ($value instanceof DIWikiPage && $value->getSubobjectName() !== '' && !$this->hasSubSemanticData($value->getSubobjectName())) {
$this->addSubSemanticData($this->store->getSemanticData($value));
}
}
}
