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Validation fragments [message #1696918]

Fri, 29 May 2015 11:36

Anakreontas Mentis

Messages: 85
Registered: October 2014

Member

My project's Generate.mwe2 file contains a fragment for validation:
fragment = validation.ValidatorFragment auto-inject {
// composedCheck = "org.eclipse.xtext.validation.ImportUriValidator"
// composedCheck = "org.eclipse.xtext.validation.NamesAreUniqueValidator"
}
which produced an xtend file named MyDslValidator.xtend.
I defined methods in the xtend class annotated with @check but they don't seem to apply. If I enter invalid input (which is syntactically correct) eclipse does not report errors or warnings.

The documentation also refers to a second fragment named org.eclipse.xtext.generator.validation.JavaValidatorFragment. This resulted in a Java file under the validation package. Except for the implementation language, what is the difference between the two fragments?

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Re: Validation fragments [message #1696919 is a reply to message #1696918]

Fri, 29 May 2015 11:52

Christian Dietrich

Messages: 13876
Registered: July 2009

Senior Member

How does your check rule look like

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
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Re: Validation fragments [message #1696923 is a reply to message #1696919]

Fri, 29 May 2015 12:00

Anakreontas Mentis

Messages: 85
Registered: October 2014

Member

My bad. Ignore this question.

I had a misconception about validation. In the xtext implementation I provided a Boolean method that returned true if the invariant hold. When I added the fragment for the Java validator, the generated file contained an example that showed I should implement void methods and use the warning and error methods to indicate problems.

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