Fstachecki: /* Drools & DMN⌘ */

2019-12-17T20:18:13Z

Drools & DMN⌘

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[[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

Filip Drools DMN - Revision history

Fstachecki: /* Drools & DMN⌘ */