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Home » Modeling » Epsilon » EVL is not working.
EVL is not working. [message #587087] Sun, 07 March 2010 13:16
José Miguel P. is currently offline José Miguel P.Friend
Messages: 62
Registered: March 2010


My name is Jose Miguel. I'm trying validate my model whit GMF-based editor using Epsilon Validatiion lenguaje, but, I have some problems.

I'm using Eclipse Modeling. I have all Epsilon plugins and I'm using ubuntu 9.10.

I have created my GMF-editor using Eugenia, and It's working ok, so, Now I'm trying validate it. I followed the tutorial called "Live validation and quick-fixes in GMF-based editors with EVL" ( gration/)

First Step: I create the integration plugin. I call it "NATversion1.validation".

Second step: I set the dependencies org.eclipse.ui.ide and org.eclipse.epsilon.evl.emf.validation to the list of dependences.

Third step: I created a evl file under validation/firewalls.evl . I have done this file very easy, It's only for try.

context Zone {
constraint HasName {
check :
message : 'Mistake'

context Host {
constraint test2 {
check : true
message : 'Mistake2'

constraint test3 {
check : false
message : 'Mistake3'

constraint test4 {
check : return true
message : 'Mistake4'

constraint test4 {
check : return false
message : 'Mistake5'


In the class Zone, It have a attr called name.

Fourth step:

In the extensions I added org.eclipse.epsilon.evl.emf.validation. Them I did right-click it and add a new constraintBinding. In the namespaceURI y set to the value firewalls and in the constraints y select the last evl file.

Nex,I added the org.eclipse.ui.ide.markerResolution and created two markerResolutionGenerator.


class : org.eclipse.epsilon.evl.emf.validation.EvlMarkerResolutionGe nerator

markerType : NATversion1.diagram.diagnostic


class : org.eclipse.epsilon.evl.emf.validation.EvlMarkerResolutionGe nerato
markerType : org.eclipse.emf.ecore.diagnostic

Fifth step:

I opened a new eclipse instance, created a new firewalls diagram with errors, saved it, clicked "validate" and nothing happened. Nothing "Problems" and view no indication for a constraint violation...

What's wrong???

I've reproduced the filesistem example from filesistem.emf (creating all fom it) and doing all step by step, and I can't do it work.

Thank. Congratulations for this fantastic system. ;)

Thank you very much.
Jose Miguel.
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