View source for Filip Drools DMN

[[Category:Drools Filip|096]]
===DMN⌘===
* Decision Model and Notation
* OMG Specification (version 1.2 published in January 2019)
* https://www.omg.org/spec/DMN
* The purpose of DMN is to '''provide the constructs that are needed to model decisions''', so that organizational decision-making can be readily depicted in diagrams, accurately defined by business analysts, and (optionally) automated.

===Decision-making⌘===
DMN provides Decision Requirements Diagrams:
* Business process models will define tasks within business processes where decision-making is required to occur
* Decision Requirements Diagrams will define the decisions to be made in those tasks, their interrelationships, and their requirements for decision logic
* Decision logic will define the required decisions in sufficient detail to allow validation and/or automation.
====Two levels of modeling decisions⌘====
:[[File:ClipCapIt-140805-154318.PNG]]
<small>Decision Model and Notation Beta 1, Figure 1: Aspects of modeling</small>
===Drools + DMN example===
====swaager====
* Create a DMN asset (DRD + Decision logic)
* Deploy it
* Go to: http://localhost:8080/kie-server/docs/
* find DMN Models 
:[[File:ClipCapIt-191217-184611.PNG]]
:[[File:ClipCapIt-191217-185120.PNG]]
* change Parameter content type to application/json
* Use the Deployment Unit name for a containerid
:[[File:ClipCapIt-191217-185506.PNG]]
* Use name and Namespace from your DMN model
:[[File:ClipCapIt-191217-185305.PNG]]
* paste json request and execute

====json request====
 {
 	"model-namespace":"https://kiegroup.org/dmn/_DEF37C97-81DD-490A-8B67-C3FF395D87AE",
 	"model-name":"CarRental1",
 	"dmn-context":{
 		"CarType":"Lux"		
 	}
 	
 }

====server response====
 {
  "type" : "SUCCESS",
  "msg" : "OK from container 'DMNtest_1.0.0-SNAPSHOT'",
  "result" : {
    "dmn-evaluation-result" : {
      "messages" : [ ],
      "model-namespace" : "https://kiegroup.org/dmn/_DEF37C97-81DD-490A-8B67-C3FF395D87AE",
      "model-name" : "CarRental1",
      "decision-name" : [ ],
      "dmn-context" : {
        "CarType" : "Lux",
        "Calculate price" : 200
      },
      "decision-results" : {
        "_DC576EEE-1286-4B82-9112-85EF6F50BF40" : {
          "messages" : [ ],
          "decision-id" : "_DC576EEE-1286-4B82-9112-85EF6F50BF40",
          "decision-name" : "Calculate price",
          "result" : 200,
          "status" : "SUCCEEDED"
        }
      }
    }
  }
 }

===DMN cheat sheet⌘===
[[File:CheatSheet-DMN-en-EMEA.pdf]]
===Drools & DMN⌘===
https://www.drools.org/learn/dmn.html

''"Drools DMN engine provides full runtime support for DMN models at Conformance level 3, meaning 100% of the features in the Standard."''

https://access.redhat.com/documentation/en-us/red_hat_process_automation_manager/7.2/html/designing_a_decision_service_using_dmn_models/dmn-model-creating-proc_dmn-models