OH3 UI Timer Rule

Setup, Configuration and Use Scripts & Rules
#1

Hello,

I’m trying to create a 5min timer inside a rule using OH3 UI DSL Script.

var Timer timer = null
timer = createTimer(now.plusSeconds(300), [ |
            logInfo("Timer Rule", "Retrigger 5min")
              timer.reschedule(now.plusSeconds(300))
        ])

But this gives me following error.
Cannot refer to the non-final variable timer inside a lambda expression; line 4, column 135, length 5

I think it has to do that the variable timer is not global.
How can I do this with a OH3 UI rule? Thanks

#2

I think you are probably right
Cant evaluate timer so returns an error
Global variable sit outside the rule, perhaps this cant be done with OH3 at the moment?

#3

I’d also like to know the correct way to define this in OH 3 via MainUI. However, it will work if you use a file based rule

var Timer timer = null

rule "Timer Rule"
when 
    Item XXXXX received update
then

 timer = createTimer(now.plusSeconds(300), [ |
            logInfo("Timer Rule", "Retrigger 5min")
              timer.reschedule(now.plusSeconds(300))
        ])

end
#4

I could use something like:

Thread::sleep (300000) // 5min

But I think it is i not a good idea?

#5

Did you get anywhere with this ?

I certainly would be interested in this using the UI. It is such a basic functionality, that should be a default rule.

/M

#6

A method of using “globals” in the UI environment is shown here using ‘this’

#7

Actually, I figured out, that at least for switches and the likes, you don’t need any scripting at all.

MainUI has a timer/counter item, that can be added to for example a switch. If the switch is triggered “ON” again during the countdown, the countdown restarts.

/M

#8

Marlow, can you share how you created the timer item. I have a cell in my overview layout that I wish to implement a timer. I looked at “Configure Cell” and “Edit YAML” but did not find where I could set a timer. That particular cell toggles between “ON” and “OFF” I wish to set a 30 minute timer when that cell is pressed and then switch to another cell.

Thanks.

#9

I can do better. I actually made a video a few days ago, how to implement a motion sensor in OpenHAB, that shows, how I build the timer.

/M

2 Likes
#10

Thank you. It was very useful!