fixup! read records from DB for lists at once, not one by one.

Author: blizzz

apps/user_ldap/lib/Access.php

@@ -882,10 +882,10 @@ public function fetchListOfUsers($filter, $attr, $limit = null, $offset = null,
 				$listOfDNs[] = $entry['dn'][0];
 				return $listOfDNs;
 			}, []);
-			$uidsByDn = $this->userMapper->getListOfIdsByDn($listOfDNs);
-			$recordsToUpdate = array_filter($ldapRecords, function($record) use ($isBackgroundJobModeAjax, $uidsByDn) {
+			$idsByDn = $this->userMapper->getListOfIdsByDn($listOfDNs);
+			$recordsToUpdate = array_filter($ldapRecords, function($record) use ($isBackgroundJobModeAjax, $idsByDn) {
 				$newlyMapped = false;
-				$uid = $uidsByDn[$record['dn'][0]] ?? null;
+				$uid = $idsByDn[$record['dn'][0]] ?? null;
 				if($uid === null) {
 					$uid = $this->dn2ocname($record['dn'][0], null, true, $newlyMapped, $record);
 				}

apps/user_ldap/lib/Mapping/AbstractMapping.php

@@ -117,7 +117,7 @@ protected function modify($query, $parameters) {
 	 */
 	public function getDNByName($name) {
 		$dn = array_search($name, $this->cache);
-		if($dn === null) {
+		if($dn === false) {
 			$dn = $this->getXbyY('ldap_dn', 'owncloud_name', $name);
 			$this->cache[$dn] = $name;
 		}