DMN Functions in jBPM
đź’ˇ Introduction In jBPM , we often use DMN Decision Tables to define rules visually. But sometimes, the same logic (for calculations, validations, or text manipulation) is needed across multiple rules. Instead of repeating that logic, you can define it once as a 📦 Function inside DMN and reuse it in your Decision Tables, Literal Expressions, or Contexts. This makes your decision models more modular, maintainable, and business-friendly. 🧠1️⃣ What Is a Function in DMN? In DMN, a function is a reusable piece of logic written in FEEL (Friendly Enough Expression Language) . It can accept input parameters and return values just like a normal programming function. ✅ Example of a simple FEEL function: function(x) x * 2 đź“Š You can define it: Inside a Context As a separate Decision node Or as a Business Knowledge Model (BKM) for global reuse ⚙️ 2️⃣ Why Use Functions in DMN Reason Benefit 🧾 Reusability Define once, use across multiple decisions ⚙️ Maintainab...