Doubt with Computed Attributes - Protocol Suntech

Hi Anton, I need help on the following question:
In the Suntech protocol the events are displayed by means of the attribute "io1", which results in a chain of 6 digits with value 0 or 1, and each digit represents an event (ignition on or off, input 1 on or off, output 1 On or off ...) I would like to use Computed Attributes to correctly display this information, but at the time of creating Computed Attributes, Attributes does not show the attribute "io1". How can I solve this?

I believe you can just type the key, if it's not available in the drop-down menu.

Anton, I could not make it work!
I'm trying to create an event with the following expression: event ? (io1 & 2) != 0 : true since the attribute "io1" is given a string of 6 characters 0 or 1, I need to analyze the second character representing one of the 3 entries and if the character analyzed is 1 result Will be true.

Can you help me ?

In case of Suntech the IO value is of String type, so you need to convert it to Integer first. I'm not sure if this syntax is supported, but in Java it's done like this:

Integer.parseInt(io1)

This works
new ("java.lang.Integer",0).parseInt(io1)
I believe it might be optimized.

Or even more simple
new ("java.lang.Integer", io1)

Hi Guys,
I have a similar issue of a gps103 protocol reporting fuel as io3 string with % sign; ex. io3=67%. Do you think I can convert this to a number to use in computed attributes? I'll like to assign it to the fuel attribute for fuel calculation. I tried the above examples but I think the % symbol is throwing it off in computed attributes.

Thanks

You can probably use something like this:

new ("java.lang.Integer", io1.substring(0, io1.length() - 1))

Thanks for the quick response Anton. Using io1.length() - 1 inside io1.substring() does not seem to work; throws error below

org.traccar.processing.ComputedAttributesHandler.computeAttribute@86![6,69]: 'io3? (new ('java.lang.Integer', io3.substring(0, (io3.length() - 1)))) * (34.0687) / (100) : null;' constructor invocation error - JexlException (... < ComputedAttributesHandler:86 < AttributeResource:51 < ...)

Using a fixed value ex. 3 seems to work

io3 ? (new ("java.lang.Integer", io3.substring (0, 3)))*(34.0687)/(100) : null

Anton, Using Float instead of Integer works with your suggestion.

For future reference and for anyone that needs to convert fuel value reported as string with % sign. The below computed attribute works for me.

o3? (new ("java.lang.Float", io3.substring (0,(io3.length()-1))))*(34.0687)/(100):null 

Hello, I can´t change my fuel value as string with %

Teltonika protocol io87 = "Fuel level 1-102 (%)"
If i choose the the "Fuel" attribute shows in Liters

How can I change it, or create a new attribute?