Using own functions in rules file

[JustinG]

@Webfeger

my.rules

This, by definition, means you are using DSL as the rules language. DSL has limited capability for reusable code snippets. Declarations of function will not work as they are not part of the language.

You have a couple of choices:

1. Stick with DSL and read up on lambdas. You probably want to start here:

Reusable Functions: A simple lambda example with copious notes

Major Edit: Rewrote with the cleaner OH 2.3 syntax. The example lambda on the OH 1 wiki is overly complex and as written will not work in OH 2. This quick example will show a super simple lambda example with copious notes. Here is the code without comments. It takes in an Item, logs it’s state and returns a slightly modified version of the String logged. val log= [ GenericItem s | logInfo("lambda", s.state.toString) s.state.toString + " logged" ] rule "Call Lambda" when // some t…

2. Move your rules to any of the other language options which have much better systems for functions.

I highly recommend option #2. The limitations of of DSL are many and if you’re trying for more advanced code like this you will likely run into many more such issues. Even if you are not highly experienced with coding, you have options. The UI Blockly implementation gives you the chance to define your own functions.