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[EVL] replace automated messages with mine [message #713553]

Mon, 08 August 2011 11:38

Eclipse User

Hi,

I am using EVL for diagram validation of my GMF editor.

I would like to replace the automated messages of GMF (e.g. the required feature " " must be set) with my own messages. So for example if I have the following class:

class{
attr String[1]name;
}

the validation produce a message as I mentioned above. I want to replace this message(or disable it) and use my own message that I wrote with in my evl file.
Do anyone know if that is possible?

Thanks in advance,

Aris

Re: [EVL] replace automated messages with mine [message #714461 is a reply to message #713553]

Wed, 10 August 2011 10:59

Eclipse User

Hi Aris,

The messages you mention are produced by the EMF validator. The following post seems to suggest that you need to implement a fragment which overrides the default messages: http://stackoverflow.com/questions/5861948/changing-default-validation-messages

Another option would be to customise your GMF code so that it does not invoke the EMF validator at all - but invokes a custom validator that only evaluates the EVL constraints instead.

Cheers,
Dimitris

Re: [EVL] replace automated messages with mine [message #714748 is a reply to message #714461]

Thu, 11 August 2011 08:36

Eclipse User

Hi Dimitris,

Thanks for the reply.

The option to not invoke the emf validator at all sounds good. Do you have any idea how that will be possible?

Thanks,

Aris

Re: [EVL] replace automated messages with mine [message #714760 is a reply to message #714748]

Thu, 11 August 2011 08:59

Eclipse User

Hi Aris,

Unfortunately, I haven't done this before so I too would have to investigate. I think I'd start by looking at the generated ValidateAction class.

Cheers,
Dimitris

Re: [EVL] replace automated messages with mine [message #716094 is a reply to message #714760]

Tue, 16 August 2011 08:53

Eclipse User

Hi Dimitris,

Unfortunately I didn't have time to solve it.
I posted a similar question to GMF forum. I put the link here with the answer I got if someone is interested in(despite the suggestion there is how to change the default messages, no disable them).

http://www.eclipse.org/forums/index.php/t/234205/

Thanks,

Aris

Re: [EVL] replace automated messages with mine [message #1691058 is a reply to message #716094]

Wed, 01 April 2015 18:55

Eclipse User

Hello there,

I was just working on this issue and it turns out that all the validation results are included in the

Diagnostic diagnostics

object under the

private static void validate(DiagramEditPart diagramEditPart, View view)in the ValidateAction class.

Now diagnostics related with the GMF editor have a code attribute with the value of 1 while errors from the EVL validator have a code of 0 (e.g diagnostics.getChildren().get(0).getCode())

I tried to modify the list but it is unmodifiable. So diagnostics can not change and you can not instantiate a Diagnostic object either!!

So I came up with a dirty solution of modifying the

private static void createMarkers(IFile target, Diagnostic emfValidationStatus, DiagramEditPart diagramEditPart) 
and the 
private static Set<EObject> collectTargetElements(Diagnostic diagnostic, Set<EObject> targetElementCollector, List allDiagnostics)

In the first locate the

List data = nextDiagnostic.getData();

and replace it with the following

List data = null;
					
if(nextDiagnostic.getCode() == 0){	
    data = nextDiagnostic.getData();
}

In the second method locate the

		
collectTargetElements((Diagnostic) it.next(), targetElementCollector, allDiagnostics);

and replace it the following:

Diagnostic p = (Diagnostic) it.next();
if (p.getCode() == 0 && it.hasNext()) {		
    collectTargetElements((Diagnostic) it.next(), targetElementCollector, allDiagnostics);
}

Hope it is useful.

[Updated on: Sat, 18 April 2015 09:43] by Moderator

Re: [EVL] replace automated messages with mine [message #1691319 is a reply to message #1691058]

Sun, 05 April 2015 14:32

Eclipse User

Hi Niko,

Many thanks for sharing this!

Cheers,
Dimitris

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