Coordinate DMN decision with BPMN

[rishab raina]

Hi,

I have a use case

i have multiple decision tables ( DMN's) for each country  and i need to process each table based on whether the input request has which country.

I wanted to orchestrate this decisioning using BPMN.

But the problem is e.g. I have a data type associated with the DMN i.e. part of DMN.

Its attached here.

IN BPMN , when i create a task & convert that into business rule to trigger the DMN, i will have to define input/ output in the data assignment section.

Now, the request/response are part of DMN as a itemdefinition, hence there is no POJO/class created for these itemdefinitions. So how can i refer them here in BPMN, without creating classes wrt to them.

Regards

Rishab

[Matteo Mortari]

Hi Rishab,

more in general, the topic to define the data model once (say with ItemDefinition) and re-use it in several model-notations is in the scope of OMG's SDMN, fyi.

I believe you have, as of today, two options.

Option1.

You could create the Java class using a tool (VSCode extension for instance) so that is taken care of (semi?)-automatically, and adopt it from BPMN pov to use the same then from DMN pov.

Option2

You could use a Map for your Data Assignment BPMN->DMN, that is you could create a generic Map as part of Script or Task in BPMN, then the Drools DMN open source engine would use it for the "Request" InputData node.

Hope this helps,

MM

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[rishab raina]

Hi,

I do not understand above points.

"the topic to define the data model once (say with ItemDefinition) and re-use it in several model-notations is in the scope of OMG's SDMN, fyi" -- it means its already implemented or its in scope to be implemented in future ?

Which VS Code extension can help me to autogenerate Java Code from Itemdeifinitions ? 

As per Option 2 , i will need to keep all my pojo attributes within the map , which I dont want to do , i need to keep the data type as part of Itemdefinition only.

Thanks

Rishab 

[Matteo Mortari]

Hi,

On Thu, 4 Jan 2024 at 09:21, rishab raina <2812r...@gmail.com> wrote:

Hi,

I do not understand above points.

"the topic to define the data model once (say with ItemDefinition) and re-use it in several model-notations is in the scope of OMG's SDMN, fyi" -- it means its already implemented or its in scope to be implemented in future ?

No, I wanted to highlight it is a general comment beyond Kogito/Kie/Drools and what you mentioned is accounted in more general terms by another spec by OMG, the SDMN.

👉 https://www.omg.org/spec/SDMN/1.0/Beta1/About-SDMN

 

Which VS Code extension can help me to autogenerate Java Code from Itemdeifinitions ? 

👉 https://blog.kie.org/2022/05/dmn-types-from-java-classes.html

 

As per Option 2 , i will need to keep all my pojo attributes within the map , which I dont want to do , i need to keep the data type as part of Itemdefinition only.

As stated, if you supply in DMN input Context a java.util.Map for your "Request" InputData input, the Drools DMN open source engine will lookup attributes "Country", "Consignee" etc in the map instead of a pojo/class.

 

To view this discussion on the web visit https://groups.google.com/d/msgid/kogito-development/8b9e15f7-d64f-4379-8e4d-e5a6ef3be6dbn%40googlegroups.com.