Today I run into a problem which I do not have in the past.
I come from OH 2.3 stable and now on OH 2.4 snapshot.
On OH 2.3 if the weather binding (and maybe other bindings too) does not receive a correct value for an item it looks like the item value stays on the old value. Now the value goes from a valid value to UNDEF.
This crashes my rules because
(weathertemperature.state as number).intValue
no longer works due to value is UNDEF not a number anymore.
Can someone verify this?
I have only mapdb and rrd4j as persistance service. So I have no chance to put old value into the item again if I see this problem.
if(weathertemperature.state == UNDEF)
weathertemperature.postUpdate(weathertemperature.previousState("persistance-service-name"))
That is I believe the appropriate behaviour. Bindings should flag problems like lost comunication with UNDEF.
It can be managed by testing for Item.state==UNDEF before other processing.
It can even be useful to trigger a rule from changed to UNDEF for problem reporting.