I'm new with ObjectDB and just tried out the example in the Eclipse/Glassfish tutorial (https://www.objectdb.com/tutorial/jpa/eclipse/ee).
After testing was successful, I extended the Guest Entity with an ArrayList of Enums:
private ArrayList<GuestFlag> flags;
The flags are stored into the database without any problem. In the explorer I can see that it is stored as array of Strings.
Unfortunately, when I try to load the flags from the database, the list is always null.
What am I doing wrong?