api to retrieve metadata from a dmn file

[Marco Iannelli]

Dear All,

does kogito/drools provides any api to retrieve metadata information for a given dmn?

e.g. i have a bkm model in a dmn file (let's call it "common") and business logic as part of another dmn, which includes common;

now i would like to retrieve the metadata of common, let's say the description field, from the business logic.

is this possible? if yes any advice?

thank you for your feedback

BR

Marco

[Gabriele Cardosi]

Hi Marco,

just to be sure: do you mean a programmatic way (i.e. java code) ?

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[Marco Iannelli]

Hi Gabriele,

yes exactly. somehow i need to fetch those information such that from the business logic i can display those info

[Gabriele Cardosi]

Ok, gotcha. I'll take a look and come back ASAP.

Bye!

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[Alex Porcelli]

Marco,

I don't think such capability exists today, and I just want to raise
that the DMN file itself is a spec - so you can use the existing API
to retrieve the DMN file content and you can then navigate in the file
following the spec definition (it's a XML file in the end).

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[Gabriele Cardosi]

Hi Marco,
the DMNModel object represents the xml, and you may use its methods to get details of the underlying model, also for imported models.

You may instantiate it with 

runtime.getModel("{namespace}",
        "{modelname}");

I'm not sure if this could be of any help.
As Alex said, there are no specific API for your need, AFAIK

Best

Gabriele

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[Marco Iannelli]

Thank you Gabriele and Alex. You gave some intresting suggestion on how I could move on with this topic.

Best regards

[Marco Iannelli]

and if for example i want to extend the ui which displays the properties of a particular dmn element, such that i can have additional fields to view and store custom metadata object, is this possible? 

if yes could you give some hints from where to start?

thank you and regards

Marco

[Gabriele Cardosi]

I think it is not possible, OOTB.
There is a swagger API, that exposes some/most of the model's information (not everything), and this could be "queried" with a REST call (it returns a JSON).
But as per modify/extend the UI itself, Alex could give you more details.

Best

Gabriele

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[Marco Iannelli]

Thank you Gabriele.

Could you share some reference related the rest end point you mentioned? 

Thank you best regards