MAP transform & split not working as expected

Setup, Configuration and Use Scripts & Rules
1

  • Platform information:

    • Hardware: Raspberry Pi 3
    • OS: Openhabian 2.5.0-1
    • Java Runtime Environment: OpenJDK Runtime Environment (Zulu8.40.0.178-CA-linux_aarch32hf) (build 1.8.0_222-b178)
    • openHAB version: 2.5.0 Release Build

  • Please post configurations (if applicable):

    • Items configuration related to the issue
    • Sitemap configuration related to the issue
    • Rules code related to the issue
    • Services configuration related to the issue

  • If logs where generated please post these here using code fences:

Rule

val info = transform("MAP", "scenes.map", "wit").split("$")
logInfo("mqtt", "gScene received command: " + info.get(0))

Map

wit = 3$Scheme$0$Speed$10$White$100
warm = 4$Scheme$0$Speed$10$White$100$Color$32,64,100
party = 2$Scheme$4$Speed$5

Log

2019-12-28 19:08:01.058 [INFO ] [.eclipse.smarthome.model.script.mqtt] - gScene received command: 3$Scheme$0$Speed$10$White$100

I would expect output of 3, instead I get the entire line.

I used this post as starting point.

2

Where is your item config and do you have the transformation service installed?

3

The transformation works fine though, it seems the split is not working correctly, and can’t really tell why not.
What happens if you just log the value of info?

4

Java’s String.split() method takes a regex argument. So you probably need to escape the $ to prevent it from being treated as an end-of-line marker.

5

Correct!
Changed the seperator character to “|” in the map and it worked like a charm.
Thanks!

6

Is there actually a way of getting the count of the number of elements after the split?
Now it at the start of everly map line order to loop the elements.
Not really elegant.

7

Nevermind my last question.
This seems the solution to my problem.