用于动态转换 JSON 的规则引擎或模板语言

Question

I have a json that needs to be transformed dynamically into another json. I want to map a property from input json to the property of target json, while mapping i also want to apply rule. Below is sample pseudo code

if (input.State == "TX")
   output.TaxRate = 12.00
 else
   output.TaxRate = input.Rate..

These rules and target json structure keeps changing very often. So I was looking for templating language or rule engine where i can dynamically apply rules or map to different target json.

I looked into Microsoft Rules Engine that use JSON based Template. But as most of the other open source rule engine it does not execute actions/methods when condition is true. It only evaluates the linq expression and returns boolean. Has anyone try to extend this rule engine to execute action/method dynamically?

I am open for any other suggestions, guidelines. I prefer templating language so i can provide UI to edit template dynamically.

Answer 1

As of v3, RulesEngine provides support for actions - https://github.com/microsoft/RulesEngine/wiki/Actions

It supports OutputExpression which can do trasformation using expression. If you need more complex transformation, you can even create your own action and plug it in RulesEngine