Memory cache returns users as ARRAY, not as Object

[rotdrop]

Hi,

at least when using the REDIS cache as distributed cache the cached users are first encoded to JSON, and decoded from JSON to an array when read back. This results in error messages like:

  | Error: Attempt  to read property "uid" on array at  /var/www/orgacloud/nextcloud/apps/user_sql/lib/Backend/UserBackend.php#432  /var/www/orgacloud/nextcloud/lib/private/Log/ErrorHandler.php:95
-- | --

I have also added some diagnostic log messages in the UserBackend.php, and indeed

$this->logger->info('USER ' . print_r($user, true)); 
...
USER Array ( [uid] => 

A workaround is to disable the cache. However, this should be fixed. The affected function is getUser(). There around line
457
the cache value is just used as is, but it is an array created by json_decode(..., true) and not an object.