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How to validate broken crosslinks [message #755135]

Mon, 07 November 2011 13:44

Lucy Sakhnenko

Messages: 41
Registered: March 2011

Member

Hi,

I'm generating code using a Context Menu, as showed here: http://christiandietrich.wordpress.com/2011/10/15/xtext-calling-the-generator-from-a-context-menu/

The problem I am having now is that I need to validate the resource before calling the generator. Using

Resource r = rs.getResource(uri, true);
		
EList<Diagnostic> errors = r.getErrors();

only gets syntax errors. It never says when the object has broken crosslinks, so my generator fails.

I read here http://www.eclipse.org/Xtext/documentation/2_1_0/060-validation.php that "If you want to validate whether all links are valid, you will have to navigate through the model so that all installed EMF proxies get resolved."

What do they mean with navigate my model and how can be done? is there another way (for example, just not enable de "Generate" button when the resource has errors)?

Thanks!

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Re: How to validate broken crosslinks [message #755146 is a reply to message #755135]

Mon, 07 November 2011 14:13

Lucy Sakhnenko

Messages: 41
Registered: March 2011

Member

I did this and it works, but I'm not sure if it is the right way to do it.

                EList<Diagnostic> errors = r.getErrors();
		TreeIterator<EObject> it = r.getAllContents();
		while(it.hasNext()) {
			Diagnostician.INSTANCE.validate(it.next());
			if(errors.size() > 0)
				break;			
		}

[Updated on: Mon, 07 November 2011 14:14]

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Re: How to validate broken crosslinks [message #755167 is a reply to message #755146]

Mon, 07 November 2011 15:31

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

why do you want to validate at all. you are in the editor. so simply ask the resource for its errors.

Resource r = rs.getResource(uri, true);
EcoreUtil.resolveAll(r);
for (org.eclipse.emf.ecore.resource.Resource.Diagnostic d : r.getErrors()) {
System.out.println(d.getMessage());
}

~Christian

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: How to validate broken crosslinks [message #755382 is a reply to message #755167]

Tue, 08 November 2011 10:29

Meinte Boersma

Messages: 434
Registered: July 2009
Location: Leiden, Netherlands

Senior Member

@Christian: I think that'll still get you only the syntactic and linking errors, not those coming from (custom) validation. However, you can use the Diagnostician as in http://www.eclipse.org/Xtext/documentation/2_1_0/060-validation.php#validation_4

Xtext blogs: executable models...again? | workshop material | custom scoping with Xtend

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Re: How to validate broken crosslinks [message #755497 is a reply to message #755146]

Tue, 08 November 2011 16:32

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Hi Lucy,

please use the IResourceValidator which accumulates the syntax errors,
linking problems and validation issues.

Regards,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

On 07.11.11 15:14, Lucy wrote:
> I did this and it works, but I'm not sure if it is the right way to do it.
>
>
> EList<Diagnostic> errors = r.getErrors();
> TreeIterator<EObject> it = r.getAllContents();
> while(it.hasNext()) {
> Diagnostician.INSTANCE.validate(it.next());
> if(errors.size() > 0)
> break;
> }
>
>

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