UoM support in rules

Setup, Configuration and Use Scripts & Rules
1

Hi.

How is this supposed to work. I currently have two “errors”, not sure if those are bugs or mis-use.

First:

var Number CurrentValue = (Bad_temp.state as QuantityType<Temperature>).doubleValue()

shows as Temperature cannot be resolved to a type. in Visual Studio Code, but works. I assume something is missing in ESH, because QuantityType<Density> can be resolved.

Second:

if ((Aussen_hum_abs.state instanceof QuantityType<Density>) && (Bad_hum_abs.state instanceof QuantityType<Density>)) {
[...]
}

shows no error in Visual Studio, but the log shows

12:07:25.753 [INFO ] [del.core.internal.ModelRepositoryImpl] - Validation issues found in configuration model 'bad.rules', using it anyway:
Cannot perform instanceof check against parameterized type QuantityType<Density>
Cannot perform instanceof check against parameterized type QuantityType<Density>

If I change to generic type

if ((Aussen_hum_abs.state instanceof QuantityType) && (Bad_hum_abs.state instanceof QuantityType)) {
[...]
}

the log switches to

12:08:53.376 [INFO ] [del.core.internal.ModelRepositoryImpl] - Validation issues found in configuration model 'bad.rules', using it anyway:
QuantityType is a raw type. References to generic type QuantityType<T> should be parameterized
QuantityType is a raw type. References to generic type QuantityType<T> should be parameterized

So what is the correct way to check if that item state is of QuantityType?

Regards,

Jan

2

I recently ran into something similar trying to use a value in a string without the unit, and used this…

val String testTemp = gTemperatureUpstairs.state.format("%.0f")

Which means these could also be used…

val Integer testTemp1 = Integer::parseInt(gTemperatureUpstairs.state.format("%.0f"))
val Double testTemp2 = Double::parseDouble(gTemperatureUpstairs.state.format("%.3f"))

To do this the way you were trying, it would need to be like this…

var Number CurrentValue = (Bad_temp.state as QuantityType<Number>).doubleValue

I don’t know the answer to this one, but could you describe why you would need it? Since you’ve defined the item, then wouldn’t you already know this?

3

I use it to check if the item has a valid value. On intialization, before the first value is posted to the item that check fails. If I cast the value and the item’s state is undefined (because no value was ever posted) this leads to an exception.

4

Items are initialized with NULL so you can just use

if(MyItem.state != NULL) // it has a value