Reported on the forum. State descriptions do no necessarily contain a pattern and thus `.get("pattern")` can return null.
Signed-off-by: Jan N. Klug <github@klug.nrw>
It seems that in some cases GSON is not able to correctly serialize/deserialize ZonedDateTime. Since we do not depend on the value in any case (it's just informational), we can store a String instead.
A missing metadata database also failed the check when upgrading items. This has been fixed, too.
Signed-off-by: Jan N. Klug <github@klug.nrw>
* Make --dir param optional for upgradetool
Almost all openHAB installations should have the $OPENHAB_USERDATA env variable set.
If this is the case, the user does not have to provide a directory, so this parameter can be made optional.
Signed-off-by: Kai Kreuzer <kai@openhab.org>
