IssueTracker

Component used: Room
Version used: 1.0.0-alpha3
Devices/Android versions reproduced on: n/a

If I have a class like this:

@TypeConverters({TypeTransmogrifier.class})
class Plan {
  @PrimaryKey
  public final String id;

  @TypeConverters({Priority.class})
  public final Priority priority;

  public final Date startTime;
  public final Date creationTime;
  public final Date updateTime;

  // other good stuff here
}

and a subclass like this:

@Entity(tableName = "trips")
class Trip extends Plan {
  // other good stuff here
}

then the Room annotation processor fails with:

Plan.java:34: error: Cannot figure out how to save this field into database. You can consider adding a type converter for it.
  public final Date startTime;
                    ^
Plan.java:35: error: Cannot figure out how to save this field into database. You can consider adding a type converter for it.
  public final Date creationTime;
                    ^
Plan.java:36: error: Cannot figure out how to save this field into database. You can consider adding a type converter for it.
  public final Date updateTime;
                    ^

If I move @TypeConverters({TypeTransmogrifier.class}) to Trip, then everything is fine. However, the field-level @TypeConverters annotation for the Priority field is inherited just fine. It feels like either both should work via inheritance or neither should.

If this is intended (or is due to some overall limitation that you can't work around), it's probably worth a note in the @TypeConverters JavaDocs.

Thanks!