| /** |
| * Copyright (c) 2015, 2018 Willink Transformations and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * E.D.Willink - Initial API and implementation |
| */ |
| package org.eclipse.qvtd.xtext.qvtcore.tests; |
| |
| import java.util.ArrayList; |
| import java.util.Comparator; |
| import java.util.List; |
| |
| import org.eclipse.emf.common.util.ECollections; |
| import org.eclipse.emf.common.util.EList; |
| import org.eclipse.emf.common.util.TreeIterator; |
| import org.eclipse.emf.ecore.EAttribute; |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.EPackage; |
| import org.eclipse.emf.ecore.EReference; |
| import org.eclipse.emf.ecore.resource.Resource; |
| import org.eclipse.jdt.annotation.NonNull; |
| import org.eclipse.ocl.examples.xtext.tests.XtextTestCase.Normalizer; |
| import org.eclipse.ocl.pivot.utilities.ClassUtil; |
| import org.eclipse.qvtd.xtext.qvtbase.tests.ModelNormalizer; |
| import org.eclipse.qvtd.xtext.qvtcore.tests.list2list.doublylinkedlist.DoublylinkedlistPackage; |
| |
| /** |
| * Forward2ReverseNormalizer normalises the results of the Forward2Reverse transformation. |
| * |
| * The list contents are not ordered, so we impose alphabetical ordering by name for test purposes. |
| */ |
| public class Forward2ReverseNormalizer implements ModelNormalizer |
| { |
| public static final @NonNull Forward2ReverseNormalizer INSTANCE = new Forward2ReverseNormalizer(); |
| |
| protected static class ElementComparator implements Comparator<EObject> |
| { |
| private final @NonNull EAttribute elementName; |
| |
| public ElementComparator(@NonNull EAttribute elementName) { |
| this.elementName = elementName; |
| } |
| |
| @Override |
| public int compare(EObject o1, EObject o2) { |
| String n1 = (String) o1.eGet(elementName); |
| String n2 = (String) o2.eGet(elementName); |
| return ClassUtil.safeCompareTo(n1, n2); |
| } |
| } |
| |
| protected class DoublyLinkedListNormalizer implements Normalizer |
| { |
| protected final @NonNull EObject list; |
| protected final @NonNull EReference listElements; |
| protected final @NonNull ElementComparator elementComparator; |
| |
| public DoublyLinkedListNormalizer(@NonNull EObject list, @NonNull EReference listElements, @NonNull ElementComparator elementComparator) { |
| this.list = list; |
| this.listElements = listElements; |
| this.elementComparator = elementComparator; |
| } |
| |
| @Override |
| public void denormalize() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void normalize() { |
| @SuppressWarnings("unchecked") |
| EList<EObject> elements = (EList<EObject>) list.eGet(listElements); |
| ECollections.sort(elements, elementComparator); |
| } |
| } |
| |
| @Override |
| public @NonNull List<@NonNull Normalizer> normalize(@NonNull Resource resource) { |
| List<@NonNull Normalizer> normalizers = new ArrayList<>(); |
| List<@NonNull EObject> contents = resource.getContents(); |
| if (contents.isEmpty()) { |
| return normalizers; |
| } |
| EObject eRoot = contents.get(0); |
| EPackage ePackage = eRoot.eClass().getEPackage(); |
| EClass elementClass = (EClass) ePackage.getEClassifier(DoublylinkedlistPackage.Literals.ELEMENT.getName()); |
| assert elementClass != null; |
| EClass listClass = (EClass) ePackage.getEClassifier(DoublylinkedlistPackage.Literals.DOUBLY_LINKED_LIST.getName()); |
| assert listClass != null; |
| EReference listElements = (EReference) listClass.getEStructuralFeature(DoublylinkedlistPackage.Literals.DOUBLY_LINKED_LIST__OWNED_ELEMENTS.getName()); |
| assert listElements != null; |
| EAttribute elementName = (EAttribute) elementClass.getEStructuralFeature(DoublylinkedlistPackage.Literals.ELEMENT__NAME.getName()); |
| assert elementName != null; |
| ElementComparator elementComparator = new ElementComparator(elementName); |
| for (TreeIterator<EObject> tit = resource.getAllContents(); tit.hasNext(); ) { |
| EObject eObject = tit.next(); |
| EClass eClass = eObject.eClass(); |
| if (listClass.isSuperTypeOf(eClass)) { |
| normalizers.add(new DoublyLinkedListNormalizer(eObject, listElements, elementComparator)); |
| } |
| } |
| for (Normalizer normalizer : normalizers) { |
| normalizer.normalize(); |
| } |
| return normalizers; |
| } |
| } |