Question

Microflow patterns

8

Although I would not like to see the modeller explode with exotic, never used but oh so handy features, ideas keep coming. After quite a few Mendix models and microflows many patterns seems to come back from time to time: Factory, Singleton (A settings object found? no: create one yes: return it). Would it be an idea to have a library of patterns you can insert in a microflow? The only thing you have to change is the entity or other parameter.

asked 2011-03-05

Chris de Gelder

3 answers

Prasad Akili · Answer 1 · 2014-12-31

I see that there has not been any update for the possible Design Patterns within Mendix. Currently we have a requirement that there should be just one instance of an Entity across the whole application. Is there a way to ensure that one and only one instance of an entity is created and accessed across the application? There unintended creation of object should be prevented.

𝕿𝖎𝖒 𝖛𝖆𝖓 𝕾𝖙𝖊𝖊𝖓𝖇𝖊𝖗𝖌𝖊𝖓 · Answer 2 · 2019-01-04

Great idea! See the Mendix Design Patterns blog of Andrej Gadjuk and have a look at https://mendixdesignpatter-sandbox.mxapps.io for the app MendixDesignPatterns, where we have examples of a strategy and a visitor.

Marc Lehane · Answer 3 · 2011-03-07

Chris, If you feel you have a reusable service microflow, you should export it and save it. Then just re-import it for the next modeler design you need it for. The problem with producing a library like that is many people model their applications out in their own way.