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Re: install viatra [message #1725081 is a reply to message #1725059] |
Mon, 29 February 2016 14:51 |
Zoltan Ujhelyi Messages: 392 Registered: July 2015 |
Senior Member |
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Hi Neda,
I would look at your Eclipse installation (use Help/Installation details menu item), as the error message states VIATRA CEP and DSE is already installed, with an even newer version. If required, in that dialog you can uninstall the already installed version, so the installation would continue.
If this was not clear enough, please provide more details about what you tried to achieve, how you tried to install, what environment do you use already.
Best regards,
Zoltán
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Re: install viatra [message #1725469 is a reply to message #1725375] |
Thu, 03 March 2016 16:52 |
Zoltan Ujhelyi Messages: 392 Registered: July 2015 |
Senior Member |
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Hi,
first of all, I hope I have understood your questions correctly; English is not my first language so it is possible I have misunderstood something here. If I did, please ask for clarification.
In the first point, you are looking for a step-by-step tutorial for transformation development with VIATRA. Sadly, for the current VIATRA, we do not have a one for writing transformations... yet. What I can suggest to look at the descriptions and examples at https://wiki.eclipse.org/VIATRA/Transformation_API, or have a look at the currently externally maintained CPS demonstrator: https://github.com/IncQueryLabs/incquery-examples-cps (including its wiki pages as well). The current VIATRA transformation language was clearly motivated the previous, graph transformation-based language of the older VIATRA2 project, but was generalized to an event-driven, rule-based language (where preconditions are still described with graph patterns, but for model manipulations we are relying on an imperative control language).
In the second point, you are looking for some graph transformation-based problem to solve with VIATRA. In general, such problems are very hard to suggest, as model and graph transformations are used for a wide area of tasks (e.g. validation, code and test case generation, simulations, etc.) in very-very different problem domains (software development, stream processing, etc.). Without any context (what are you familiar with, what is interesting you, etc.) it is really hard to suggest something interesting. I'd recommend to ask your teacher for some recommendations.
I hope, this answer was helpful.
Best regards,
Zoltán
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