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[Xpand] Access ClassAttribute before DEFINE Class [message #762252]

Wed, 07 December 2011 19:03

ralf.teckelmann

Messages: 2
Registered: December 2011

Junior Member

Hello Guys,

I'm very new to Xpand and I have the following problem.
I got a Class "Template" with an Attribute "type" which is the "Root class" of my model.
I want to do something like:

<<Import model>>

<< IF <<type>>!="String">>
<<DEFINE main FOR Template>>
...
<<ELSE>>
...
<<ENDIF>>

Is it possible to do this this way or through another Xpand-mechanism?
From an OO point of view it could seem stupid to try to access the attribute of an object before the object exists, but as I said I'm new to the language.

Mainly I do ask this question, because I perceived, if I write the shown part into my x.xpt I wouldn't get any fault symbols for syntax errors in current Eclipse Modelling distribution even if I implement faults like <<EDEF>> instead of <<ENDDEFINE>> in later parts of the x.xpt.

Thanks in advance

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Re: [Xpand] Access ClassAttribute before DEFINE Class [message #762261 is a reply to message #762252]

Wed, 07 December 2011 19:20

Christian Dietrich

Messages: 14462
Registered: July 2009

Senior Member

Hi,

there editor is sometimes buggy indeed. please make sure you configure thecorrect metamodel kind in your projects xtand/xpand properties section.
and yes what you want to do is totally nonsense
it should look like

«IMPORT model»
«DEFINE main FOR Template»
«FILE "test.txt"»
«IF type=="String"»
//hey this is a string
«ENDIF»
«ENDFILE»
«ENDDEFINE»

~Christian

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: [Xpand] Access ClassAttribute before DEFINE Class [message #762288 is a reply to message #762261]

Wed, 07 December 2011 20:07

ralf.teckelmann

Messages: 2
Registered: December 2011

Junior Member

Good Evening Christian,

thank you for your fast reply and the affirmation that my idea was stupid Smile

.

Cheers

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