silverstripe-scienceninjas/sapphire — comment on commit 458c3afca31519a2a0daaeedea65b05c1c43c5a5
File: model/DataList.php line 240
By slindqvist:

There are not coverage for all of the SearchContexts, only :StartsWith, but could easily be extended to cover the rest of them.

I think it would be good to pull this functionality into the ORM instead, since :not is not easily implemented outside the SQLQuery / ORM.