fact to evaluate expression about json-rules-engine HOT 2 CLOSED

@byronhogoboom You can do any computations you want inside a custom fact. It is important to remember that the output the fact returns should be consistent based on the input parameters. So if you are multiplying the values of your params together, or other fact values, that should be fine. If you were doing something that would cause the fact results to vary given the exact same params (like multiplying by a random number, for example), that can be done but is strongly discouraged as it requires you to disable fact caching and incur a performance hit.

I'd suggest doing a quick spike by building off one of the examples to prove out your use case. If you run into problems just paste the snippet in here and I'll try and help.

from json-rules-engine.

Hello, please is there an example pointing to a custom fact?

from json-rules-engine.