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Validation in Xtext [message #1693733]

Tue, 28 April 2015 04:16

Arshad Adavani

Messages: 163
Registered: July 2013
Location: Bangalore

Senior Member

HI all,

I have some common data which should go into all my validation checks.
This data is dependent on the model and I want to prepare this common data from my model before all the @Checks are called.

Is there any way to achieve this ?

Thanks for any help Smile

Arshad

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Re: Validation in Xtext [message #1693734 is a reply to message #1693733]

Tue, 28 April 2015 04:32

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

please define "the model" is it the file a part of a file the whole project ....

you may have a look at org.eclipse.xtext.validation.AbstractDeclarativeValidator.getContext()

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

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Re: Validation in Xtext [message #1693735 is a reply to message #1693734]

Tue, 28 April 2015 04:34

Arshad Adavani

Messages: 163
Registered: July 2013
Location: Bangalore

Senior Member

Hi Christian,

Its the resource that I save.

Regards,
Arshad

Arshad

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Re: Validation in Xtext [message #1693736 is a reply to message #1693735]

Tue, 28 April 2015 04:35

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

can you elaborate a bit more on your usecase? what do you do with that kind of "data"

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

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Re: Validation in Xtext [message #1693742 is a reply to message #1693736]

Tue, 28 April 2015 05:23

Arshad Adavani

Messages: 163
Registered: July 2013
Location: Bangalore

Senior Member

Hi Christian,

When I save my file, in my validation class I get the root object for it (i.e. the object which contains whole data).

From this resource data I want to retrieve some common data by applying some business logic.

This common data I want to use in more than one @check methods.

Regards,
Arshad

Arshad

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Re: Validation in Xtext [message #1693748 is a reply to message #1693742]

Tue, 28 April 2015 06:31

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Then give the context a try (use it as cache)

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

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Re: Validation in Xtext [message #1693751 is a reply to message #1693733]

Tue, 28 April 2015 06:48

Karsten Thoms

Messages: 762
Registered: July 2009
Location: Dortmund, Germany

Senior Member

You could also use IDerivedStateComputer to put the derived common data into your resource on save.

Need professional support for Xtext, EMF, Eclipse IDE?
Go to: http://devhub.karakun.com
Twitter : @kthoms
Blog : www.karsten-thoms.de

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Re: Validation in Xtext [message #1693766 is a reply to message #1693751]

Tue, 28 April 2015 09:04

Arshad Adavani

Messages: 163
Registered: July 2013
Location: Bangalore

Senior Member

Hi Christian,

Thanks for the info.
I will go ahead with your suggestion.

One more question I have:

Suppose I am modifying a file, in the background all the validations which do not have CheckType.Normal will be called.

i.e. by default it will be CheckType.Fast. I want to avoid the validations if there are no real changes in the editor . Consider a case where I just enter a whitespace.

Can we achieve this ..?

Regards,
Arshad

Arshad

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