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package org.eclipse.emf.edapt.declaration.simple;
import java.util.List;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EReference;
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.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: B74CBF847E481CFC73934807D5AA01A3
*/
@EdaptOperation(identifier = "makeContainment", label = "Make Reference Containment", description = "In the metamodel, a reference is made containment. In the model, its values are replaced by copies.", breaking = true)
public class MakeContainment extends OperationImplementation {
/** {@description} */
@EdaptParameter(main = true, description = "The reference")
public EReference reference;
/** {@description} */
@EdaptConstraint(restricts = "reference", description = "The reference must not already be containment.")
public boolean checkReferenceNotContainment(EReference reference) {
return !reference.isContainment();
}
/** {@inheritDoc} */
@Override
public void execute(Metamodel metamodel, Model model) {
final EClass contextClass = reference.getEContainingClass();
// metamodel adaptation
reference.setContainment(true);
// model migration
for (final Instance instance : model.getAllInstances(contextClass)) {
if (reference.isMany()) {
final List<Instance> values = instance.unset(reference);
for (final Instance value : values) {
instance.add(reference, value.copy());
}
} else {
final Instance value = instance.unset(reference);
if (value != null) {
instance.set(reference, value.copy());
}
}
}
}
}
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