/**
* {@inheritdoc}
*/
public static function preDelete(EntityStorageInterface $storage, array $entities) {
// @todo This will, via Index::onDependencyRemoval(), remove all indexes
// from this server, triggering the server's removeIndex() method. This is,
// at best, wasted performance and could at worst lead to a bug if
// removeIndex() saves the server. We should try what happens when this is
// the case, whether there really is a bug, and try to fix it somehow (maybe
// clever detection of this case in removeIndex() or Index::postSave().
parent::preDelete($storage, $entities);
// Iterate through the servers, executing the backends' preDelete() methods
// and removing all their pending server tasks.
foreach ($entities as $server) {
/** @var \Drupal\search_api\ServerInterface $server */
if ($server->hasValidBackend()) {
$server->getBackend()->preDelete();
}
Utility::getServerTaskManager()->delete(NULL, $server);
}
}