/*******************************************************************************
* Copyright (c) 2011, 2014 Willink Transformations and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* E.D.Willink - initial API and implementation
*******************************************************************************/
package org.eclipse.ocl.pivot.internal.library;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import org.eclipse.ocl.pivot.ElementExtension;
import org.eclipse.ocl.pivot.Property;
import org.eclipse.ocl.pivot.evaluation.Executor;
import org.eclipse.ocl.pivot.ids.TypeId;
import org.eclipse.ocl.pivot.library.AbstractProperty;
import org.eclipse.ocl.pivot.utilities.NameUtil;
/**
* The static instance of ExplicitNavigationProperty supports evaluation of
* a property call that navigates a relationship.
*/
public class BaseProperty extends AbstractProperty
{
protected final @NonNull Property property;
public BaseProperty(@NonNull Property property) {
this.property = property;
}
@Override
public @Nullable Object evaluate(@NonNull Executor executor, @NonNull TypeId returnTypeId, @Nullable Object sourceValue) {
// return property.getType();
if (sourceValue instanceof ElementExtension) {
return ((ElementExtension)sourceValue).eContainer();
}
if (sourceValue instanceof EObject) {
EObject eObject = (EObject)sourceValue;
EClass eClass = eObject.eClass();
EStructuralFeature eFeature = NameUtil.getENamedElement(eClass.getEAllStructuralFeatures(), property.getName());
if (eFeature != null) {
Object baseObject = eObject.eGet(eFeature);
return baseObject;
}
}
return null;
}
}