MoScript/Use Cases/Megamodel Population Part 2

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Megamodel Population Part 2

Continuing with the use case Megamodel Population Part 1, this use cases shows how to programmatically populate the megamodel with models, metamodels and transformations. For this purpose we are going to populate it with the content of an ATL project that can be found in the ATL Transformations Zoo

Environment Preparation
  • Download the Families to Persons source code from here
  • Unzip the project and import it into eclipse copying the fiels into the workspace
Registering artifacts

The following is the code of the megamodel population

program megamodelPopulation 

using { 
ecore : !MetaMetamodel = OclUndefined
familiesMetamodel : !Metamodel = OclUndefined
personsMetamodel : !Metamodel = OclUndefined
}

The first thing we have to do is to declare the variables we are going to use along the rest of the code. We declare variables for holding the the ecore metametamodel, and the metamodels of the Families2PersonExample.

do{

 -- Removes all the identified elements form the megamodel
for(identifiedElement in !IdentifiedElement.allInstances()->select(ie | not (ie.identifier = OclUndefined) )) {
  identifiedElement.remove();
}

 -- Creates the Ecore metametamodel element in the megamodel
  thisModule.register(
      thisModule.metametamodel(
           thisModule.identifier('identifier', 'http://www.eclipse.org/emf/2002/Ecore', 'GlobalModelManagement::URI')
          ,thisModule.locator('locator', 'http://www.eclipse.org/emf/2002/Ecore', 
                                         'GlobalModelManagement::EPackagesRegistryLocator')
      )
  );
  
  ecore <- !Model.allInstances()->any(m | m.identifier.value = 'http://www.eclipse.org/emf/2002/Ecore');
  
  -- Creates the Families metamodel element in the megamodel
thisModule.register(
  thisModule.metamodel(
    thisModule.identifier('identifier', '/Families2Persons/Families.ecore', 'GlobalModelManagement::URI'),
    thisModule.locator('locator', '/Families2Persons/Families.ecore', 'GlobalModelManagement::EFSLocator'),
    ecore
  )  
);

-- Creates the Persons metamodel element in the megamodel
thisModule.register(
  thisModule.metamodel(
    thisModule.identifier('identifier', '/Families2Persons/Persons.ecore', 'GlobalModelManagement::URI'),
    thisModule.locator('locator', '/Families2Persons/Persons.ecore', 'GlobalModelManagement::EFSLocator'),
    ecore
  )  
);