/*******************************************************************************
* Copyright (c) 2010, 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.library.collection;
import java.util.Set;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import org.eclipse.ocl.pivot.evaluation.Evaluator;
import org.eclipse.ocl.pivot.evaluation.Executor;
import org.eclipse.ocl.pivot.ids.CollectionTypeId;
import org.eclipse.ocl.pivot.ids.TupleTypeId;
import org.eclipse.ocl.pivot.ids.TypeId;
import org.eclipse.ocl.pivot.library.AbstractBinaryOperation;
import org.eclipse.ocl.pivot.messages.PivotMessages;
import org.eclipse.ocl.pivot.values.CollectionValue;
import org.eclipse.ocl.pivot.values.InvalidValueException;
import org.eclipse.ocl.pivot.values.TupleValue;
/**
* CollectionProductOperation realises the Collection::product() library operation.
*/
public class CollectionProductOperation extends AbstractBinaryOperation
{
public static final @NonNull CollectionProductOperation INSTANCE = new CollectionProductOperation();
/** @deprecated use Executor */
@Deprecated
@Override
public @Nullable CollectionValue evaluate(@NonNull Evaluator evaluator, @NonNull TypeId returnTypeId, @Nullable Object sourceVal, @Nullable Object argVal) {
return evaluate(getExecutor(evaluator), returnTypeId, sourceVal, argVal);
}
/**
* @since 1.1
*/
@Override
public @NonNull CollectionValue evaluate(@NonNull Executor executor, @NonNull TypeId returnTypeId, @Nullable Object sourceVal, @Nullable Object argVal) {
CollectionValue sourceValue = asCollectionValue(sourceVal);
CollectionValue argumentValue = asCollectionValue(argVal);
CollectionTypeId collTypeId = (CollectionTypeId)returnTypeId;
TupleTypeId tupleTypeId = (TupleTypeId) collTypeId.getElementTypeId();
Set<TupleValue> product = sourceValue.product(argumentValue, tupleTypeId);
if (product != null) {
return executor.getIdResolver().createSetOfAll(collTypeId, product);
}
else {
throw new InvalidValueException(PivotMessages.MissingResult, "product"); //$NON-NLS-1$
}
}
}