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VIATRA2/Basics
Contents
VIATRA2 Basics
Basic concepts
Model space
VIATRA2 is a model transformation engine which can be used to manipulate abstract models (software, architecture, domain-specific) by creating model-to-model and model-to-code transformations. VIATRA2 stores models in the VIATRA2 Model Space, supports the uniform representation of metamodels and models in a single logical container (as opposed to EMF where metamodels and models are separated), using an arbitrary number of metamodeling levels.
Transformations
Model-to-model and model-to-code transformations are specified using the VIATRA2 Transformation Language (VTCL) which is a textual domain-specific programming language tailored for this specific task. TODO
Model import and export
VIATRA2 supports the programmatic import of metamodels and models from other tools using an Application Programming Interface (API).TODO Model exports are supported using (i) code generation, or (ii) the VIATRA2 modeling API accessible from any Java program.
Simple examples
First steps
Model space wizard
In order to begin working with VIATRA2, you'll first need to create a model space instance to store your models.
- Create a new project in Eclipse. The project can be of any type.
- In the project, create a new file (right click|new|other).
- In the wizard, select "VIATRA2 VPM Model space" from the "VIATRA2 Framework Release3" category.
- Specify the file name and click Next (not Finish).
- On the modelspace fragments selection screen, select "VPM Core and Datatypes metamodel".
- Click Finish.
Once the wizard is finished, you should have the new VPML file in your project. VPML files are XML serializations of the VIATRA2 model space, you can have any number of VPML files open at the same time, meaning that you can work with multiple model spaces concurrently.
Model space editor and VIATRA2 views
Double-click the newly created VPML file to open the VIATRA2 model editor (or select Open With|VIATRA2 model editor from the context menu). You should also open the VIATRA2 model spaces view (Window|Show view|Other|VIATRA2 Model spaces) and the VIATRA2 Textual Output view to get the basic home screen:
