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package org.eclipse.emf.edapt.declaration.simple;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edapt.declaration.EdaptConstraint;
import org.eclipse.emf.edapt.declaration.EdaptOperation;
import org.eclipse.emf.edapt.declaration.EdaptParameter;
import org.eclipse.emf.edapt.declaration.OperationImplementation;
import org.eclipse.emf.edapt.migration.MigrationException;
import org.eclipse.emf.edapt.spi.migration.Instance;
import org.eclipse.emf.edapt.spi.migration.Metamodel;
import org.eclipse.emf.edapt.spi.migration.Model;
/**
* {@description}
*
* @author herrmama
* @author $Author$
* @version $Rev$
* @levd.rating YELLOW Hash: CBF0265BD4DA4AD17DAE8E4798A4A969
*/
@EdaptOperation(identifier = "makeFeatureVolatile", label = "Make Feature Volatile", description = "In the metamodel, a feature is made volatile. In the model, its values have to be deleted.")
public class MakeFeatureVolatile extends OperationImplementation {
/** {@description} */
@EdaptParameter(main = true, description = "The feature to be made volatile")
public EStructuralFeature feature;
/** {@description} */
@EdaptConstraint(restricts = "feature", description = "Feature must not be volatile")
public boolean checkFeatureNotVolatile(EStructuralFeature feature) {
return !feature.isVolatile();
}
/** {@description} */
@EdaptParameter(description = "Whether the feature is transient")
public Boolean trans = true;
/** {@description} */
@EdaptParameter(description = "Whether the feature is derived")
public Boolean derived = true;
/** {@description} */
@EdaptParameter(description = "Whether the feature is changeable")
public Boolean changeable = false;
/** {@inheritDoc} */
@Override
public void execute(Metamodel metamodel, Model model)
throws MigrationException {
// metamodel adaptation
feature.setVolatile(true);
feature.setTransient(trans);
feature.setDerived(derived);
feature.setChangeable(changeable);
if (feature instanceof EReference) {
final EReference reference = (EReference) feature;
if (reference.getEOpposite() != null) {
final DropOpposite operation = new DropOpposite();
operation.reference = reference;
operation.checkAndExecute(metamodel, model);
}
}
// model migration
for (final Instance instance : model.getAllInstances(feature
.getEContainingClass())) {
deleteFeatureValue(instance, feature);
}
}
}
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