Auto Validator

[NourEldin-Ali]

Hi,

I'm working on auto validator.

I saw that in GLSP 2.x it was directly implemented. How we can add this functionality in your version? How we can access the model on submit (on modify any thing) to make validator?

Could you please help me to do that?
Thank you!

[rsoika]

Hi @NourEldin-Ali,
in Open-BPMN we bind the class BPMNGLSPValidator simply to our BPMNDiagramModule:

    @Override
    protected Class<? extends ModelValidator> bindModelValidator() {
        return BPMNGLSPValidator.class;
    }

The validation itself is done in our case in the Open-BPMN Meta model. This is completely decoupled from the GLSP part and can be used on any BPMN model file.

We do not yet validate a lot of rules in BPMN , but the mechanism can be extended easily and I will extend this in the future.

So for Open-BPMN you can simply call validate on any bpmn mode which returns a list of errors:

    List<BPMNValidationError> errorList = modelState.getBpmnModel().validate();

Does this answer your question?

[NourEldin-Ali]

Thank you for your reply!

I was already use the Meta model to validate some part, however, we can't do everything using meta model. There for define some rules in my model in the validator BPMNGLSPValidator, that can help me to detect other error or recommandations for the user.

For example, in my case, I'm working on extention of BPMN to add the data within the activity (it's a part of my PhD research). So, I need to detect the data that not connect to other data (see figure bellow).

But, I need to click to thevalidation button in the palette to show the errors, and warning on the data elements.

My Question is: how I can do that without click on the button? I prefere to have this validation after add any elements to the model, but I dont know how I can access onSubmitModel/onUpdateModel or a function that called on modification.

[rsoika]

Hi @NourEldin-Ali , ok I understand. I think it should be easy to send an action - the RequestEditValidationAction could be the thing you need. Look here: https://eclipse.dev/glsp/documentation/protocol/

On the other hand we should extend the BPMNElementExtension with a new method like validate(BPMNElement bpmnElement) . This may be useful if an adopter need additional validation rules.

What do you think?