| /******************************************************************************* |
| * Copyright (c) 2009, 2013 E.D.Willink 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.examples.library.collection; |
| |
| import org.eclipse.jdt.annotation.NonNull; |
| import org.eclipse.jdt.annotation.Nullable; |
| import org.eclipse.ocl.examples.domain.elements.DomainStandardLibrary; |
| import org.eclipse.ocl.examples.domain.elements.DomainType; |
| import org.eclipse.ocl.examples.domain.evaluation.DomainEvaluator; |
| import org.eclipse.ocl.examples.domain.ids.TypeId; |
| import org.eclipse.ocl.examples.domain.library.AbstractUnaryOperation; |
| import org.eclipse.ocl.examples.domain.values.CollectionValue; |
| import org.eclipse.ocl.examples.domain.values.util.ValuesUtil; |
| import org.eclipse.ocl.examples.library.numeric.NumericPlusOperation; |
| |
| /** |
| * CollectionSumOperation realises the Collection::sum() library operation. |
| */ |
| public class CollectionSumOperation extends AbstractUnaryOperation |
| { |
| public static final @NonNull CollectionSumOperation INSTANCE = new CollectionSumOperation(); |
| |
| @Override |
| public @NonNull Object evaluate(@NonNull DomainEvaluator evaluator, @NonNull TypeId returnTypeId, @Nullable Object sourceVal) { |
| CollectionValue collectionValue = asCollectionValue(sourceVal); |
| // FIXME Bug 301351 Look for user-defined zero |
| // resultType.getZero(); |
| DomainStandardLibrary standardLibrary = evaluator.getStandardLibrary(); |
| DomainType returnType = evaluator.getIdResolver().getType(returnTypeId, null); |
| Object result; |
| if (returnType.conformsTo(standardLibrary, standardLibrary.getIntegerType())) { |
| result = ValuesUtil.integerValueOf(0); |
| } |
| else { |
| result = ValuesUtil.realValueOf(0.0); |
| } |
| for (Object element : collectionValue.iterable()) { |
| result = NumericPlusOperation.INSTANCE.evaluate(result, element); |
| } |
| return result; |
| } |
| } |