Rule Execution and Management

1️⃣ Rule Execution Process

🔹 Steps:

1. Create Rule Files (.drl)

    * Define rules using the Drools Rule Language (DRL).
    * Example rule (LoanApproval.drl):

2.Load and Compile Rules

    * Use KIE (Knowledge Is Everything) API to load rules dynamically.

3.Insert Facts (Data)

    * Create loan applications and insert them into the rule engine.

4.Execute Rules

    * The rules get evaluated and executed automatically based on conditions.
    * The system applies changes and triggers actions.

2️⃣ Rule Management

Drools provides ways to manage rules dynamically:

  🔹 Rule Flow Groups

         * Allow controlling rule execution order.

         * Can be triggered in Java:

  🔹 Rule Versioning

         * Use KIE Scanner to load rules dynamically from an external repository.

  🔹 Rule Enable/Disable

         * Can enable/disable rules using metadata:

  🔹 Rule Priority

         * Assign salience to set rule execution priority

3️⃣ Rule Execution Strategies

  🔹 Fire-All-Rules

         * Executes all applicable rules.

  🔹 Fire-Until-Halt

         * Keeps the rule engine running continuously.

  🔹 Conditional Execution

         * Fire rules based on agenda filters:

🚀 Summary