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package org.eclipse.papyrus.core.queries.test.modisco.queries;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.facet.infra.query.core.exception.ModelQueryExecutionException;
import org.eclipse.emf.facet.infra.query.core.java.IJavaModelQuery;
import org.eclipse.emf.facet.infra.query.core.java.ParameterValueList;
import org.eclipse.uml2.uml.Classifier;
import org.eclipse.uml2.uml.NamedElement;
/** test - list the elements given as parameters that are instanceof Classifiers */
public class ListElementsInstanceofClassifiers implements IJavaModelQuery<EObject, Collection<Classifier>> {
/**
* {@inheritDoc}
*/
@SuppressWarnings("unchecked")
public Collection<Classifier> evaluate(final EObject context, final ParameterValueList parameterValues)
throws ModelQueryExecutionException {
// retrieve the list of elements
List<NamedElement> elements = (List<NamedElement>)parameterValues.getValueByParameterName("elementList");
List<Classifier> classifiers = new ArrayList<Classifier>();
for(NamedElement element : elements) {
if(element instanceof Classifier) {
classifiers.add((Classifier)element);
}
}
return classifiers;
}
}
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