/**
* Removes data from the given SMWSemanticData.
* If the subject of the data that is to be removed is not equal to the
* subject of this SMWSemanticData, it will just be ignored (nothing to
* remove). Likewise, removing data that is not present does not change
* anything.
*
* @since 1.8
*
* @param SemanticData $semanticData
*/
public function removeDataFrom(SemanticData $semanticData)
{
if (!$this->mSubject->equals($semanticData->getSubject())) {
return;
}
foreach ($semanticData->getProperties() as $property) {
$values = $semanticData->getPropertyValues($property);
foreach ($values as $dataItem) {
$this->removePropertyObjectValue($property, $dataItem);
}
}
foreach ($semanticData->getSubSemanticData() as $semData) {
$this->removeSubSemanticData($semData);
}
}
