Combine things to one output?

Setup, Configuration and Use Items & Sitemaps
13

Well, because the item has a status, and this status is most likely to be used in rules. You don’t want to parse strings everytime you want to compare or add something :wink: It’s easy to change display behavior and it’s easy to build a string from a number in a rule.
Take a look at this rule:

rule "PV-Anlage Update"
when 
	Item PV_Current received update
then
	MyPV.postUpdate(PV_Current.state.toString+"W "+PV_DaySum.state.toString+"Wh/d "+PV_YearSum.state.toString+"Wh/y "+PV_Total.state.toString+"Wh/t")
end

Each time PV_Current gets an update, MyPV is updated, too, but with additional items. It looks like this:
pv

In fact, as time goes by, I already have a more feature-complete version of the rule:

rule "PV-Anlage Update"
 when 
	Item PV_Current received update
 then
	var String strCurr  = "Err; "
	var String strDay   = "Err; "
	var String strYear  = "Err; "
	var String strTotal = "Err; "
	logDebug("PV-update", "Start der Rule")
	if (PV_Current.state instanceof Number) {
		if (PV_Current.state > 1000) 
			strCurr = String::format("%.2f kW; ", (PV_Current.state as Number) / 1000)
		else 
			strCurr = PV_Current.state.format("%d W; ")
	}
	logDebug("PV-update", "strCurr = {}",strCurr)
	if (PV_DaySum.state instanceof Number) {
		if (PV_DaySum.state > 1000)
			strDay = String::format("%.2f kWh/d; ", (PV_DaySum.state as Number) / 1000)
		else
			strDay = PV_DaySum.state.format("%d Wh/d; ")
	}
	logDebug("PV-update", "strDay = {}",strDay)
	if (PV_YearSum.state instanceof Number) {
		if (PV_YearSum.state > 1000000)
			strYear = String::format("%.2f mWh/y; ", (PV_YearSum.state as Number) / 1000000)
		else if (PV_YearSum.state > 1000)
			strYear = String::format("%.2f kWh/y; ", (PV_YearSum.state as Number) / 1000)
		else
			strYear = PV_YearSum.state.format("%d Wh/y; ")
	}
	logDebug("PV-update", "strYear = {}",strYear)
	if (PV_Total.state instanceof Number) {
		if (PV_Total.state > 1000000)
			strTotal = String::format("%.2f mWh/t", (PV_Total.state as Number) / 1000000)
		else if (PV_Total.state > 1000)
			strTotal = String::format("%.2f kWh/t", (PV_Total.state as Number) / 1000)
		else
			strTotal = PV_Total.state.format("%d Wh/t")
	}
	logDebug("PV-update", "strTotal = {}",strTotal)
	MyPV.postUpdate(strCurr + strDay + strYear + strTotal)
end

And the output is like this:
pv2
And as you can see, I have an issue in this rule It should be MWh, not mWh :smiley: but guess what: changed that already…