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Tutorial: Batch transformation [message #1797705]

Mon, 05 November 2018 13:17

Alex LJ

Messages: 1
Registered: October 2018

Junior Member

Hi, i'm following VIATRA tutorial, but i'm getting errors reaching to this point:

https://www.eclipse.org/viatra/documentation/tutorial.html#_batch_transformations

I created a new Viatra Query project and a new Query file but when i copy the code provided i get all of the errors shown in the included picture. What am i missing?

Thanks in advance

Attachment: errors.png
(Size: 223.88KB, Downloaded 112 times)

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Re: Tutorial: Batch transformation [message #1797755 is a reply to message #1797705]

Tue, 06 November 2018 07:56

Zoltan Ujhelyi

Messages: 392
Registered: July 2015

Senior Member

Hi Alex,

most likely your query project does not have the metamodel on its classpath (e.g. added as a depenendency). In this case, as described in https://www.eclipse.org/viatra/documentation/tutorial.html#_define_your_first_query, you have to add the `org.eclipse.viatra.examples.cps.model` plug-in as a dependency in the MANIFEST.MF file of your query project.

Best regards,
Zoltán

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Re: Tutorial: Batch transformation [message #1803970 is a reply to message #1797755]

Thu, 14 March 2019 15:14

Maria Bonner

Messages: 1
Registered: March 2019

Junior Member

Hey Zoltán,

I have the same problem. However, when I try to add the the `org.eclipse.viatra.examples.cps.model` plug-in as a dependency in the MANIFEST.MF file, the Plug-in manager does not display any matching items. It seems like some packages are missing after installation. Any idea how the problem can be fixed?

Thanks in advance,
Maria

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Re: Tutorial: Batch transformation [message #1804140 is a reply to message #1803970]

Tue, 19 March 2019 08:37

Zoltan Ujhelyi

Messages: 392
Registered: July 2015

Senior Member

Hi Maria,

in general, I see two reasons this might be the case:

1) the CPS metamodel is not installed to your Eclipse installation/target platform. The metamodel is installable from http://download.eclipse.org/viatra/examples/cps
2) If the metamodel is already installed, then you might be using a custom target platform (e.g. not the running platform), that does not include this. To check it, go to Preferences, and look at the Plug-in Development/Target Platform page and check the currently selected target platform.

I hope this was helpful. If not, feel free to ask for further clarifications.

Best regards,
Zoltán

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