Query for all unfinished Historyc Activity Instances using HistoricActivityInstanceQuery.
always get zero result
should return the entries that do NOT have an END_TIME (END_TIME is null)
The generated SQL query is:
select count(RES.ID_) from ACT_HI_ACTINST RES WHERE RES.END_TIME_ is null and RES.END_TIME_ is not null
Full unit test project attached.