[SOLVED] Rule problem now.minusDays with variable

Setup, Configuration and Use Scripts & Rules
,
1

Hello again,
I have the following Problem with a rule. If These rules is executed, I get the following error:

Rule ‘Stromzähler Verbrauch aktuell’: An error occurred during the script execution: index=1, size=1

The rule:

rule "Stromzähler Verbrauch aktuell"
when
	Item test_switch changed
	//Time is midnight
then
	var int weekday = now.getDayOfWeek			//Montag = 1 ... Sonntag = 7
	//Verbrauch Tag aktuell
    postUpdate(Stromzaehler_Verbrauch_1T_aktuell, (Stromzaehler_Stand.deltaSince(now.withTimeAtStartOfDay(),"influxdb") as DecimalType))
	

	//Verbrauch Woche aktuell
	if (now.getDayOfWeek.intValue == 1) {
		postUpdate(Stromzaehler_Verbrauch_7T_aktuell, (Stromzaehler_Stand.deltaSince(now.withTimeAtStartOfDay(),"influxdb") as DecimalType))
		var Number temp4 = Stromzaehler_Verbrauch_7T_aktuell.state
		logInfo("rule", "Der Stromverbauch der aktuellen Woche wurde berechnet und beträgt: " +String.format("%.2f",(temp4).floatValue())+ " kWh")	
	}
	else {
		logInfo("rule", "Test")
		var int calc1 = weekday-1
		var Number calc11 = calc1 as Number
		logInfo("rule", "Test2")
		var Number calc2 = Stromzaehler_Stand.deltaSince(deltaSince(now.minusDays(calc11)),"influxdb")
		var Number calc3 = Stromzaehler_Stand.deltaSince(now.withTimeAtStartOfDay(),"influxdb")
		var Number calc4 = calc2 + calc3
		postUpdate(Stromzaehler_Verbrauch_7T_aktuell, calc4)
		logInfo("rule", "Der Stromverbauch der aktuellen Woche wurde berechnet und beträgt: " +String.format("%.2f",(calc4).floatValue())+ " kWh")	
	}

	
	logInfo("rule", "Stromverbraeuche wurden berechnet")	
end```


I think there is an error with the variable but I don't know what to do.

Any ideas?

Thanks for your help guys!
2

Do you get any logs from this Rule or just the error?

Are you certain that the calls to deltaSince are returning a value instead of null?

3

Oh sorry, log Test and Test2 are visible in the karaf log. I think this Expression is the problem:

var Number calc2 = Stromzaehler_Stand.deltaSince(deltaSince(now.minusDays(calc11)),"influxdb")

Thank you for your help.

4

The call to now.someMethod(number), the number must be an int
Therefore calc11 must be an int

    var int calc1 = weekday - 1
    var int calc11 = calc1

Or you could get rid of call11 altogether:

    var int calc1 = weekday - 1
    ...
    var Number calc2 = Stromzaehler_Stand.deltaSince(deltaSince(now.minusDays(calc1)),"influxdb") as Number
    ...
5

No, also the same error. I erase var calc11 (was only a test). But VSCode Shows me the following error:

Invalid number of arguments. The method deltaSince(Item, AbstractInstant) is not applicable for the arguments (DateTime)
Type mismatch: cannot convert from DecimalType to AbstractInstant

What is wrong?

6 
    var Number calc2 = Stromzaehler_Stand.deltaSince(now.minusDays(calc1),"influxdb") as Number
7

What the ……
That was it! Perfect! Thank you very much. I have missed the forest for the trees:-)

Thank you!