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/*******************************************************************************
* Copyright (c) 2016 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.qvtd.compiler.internal.qvtr2qvtc;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.ocl.pivot.OCLExpression;
import org.eclipse.ocl.pivot.Property;
import org.eclipse.ocl.pivot.ShadowPart;
import org.eclipse.ocl.pivot.utilities.ClassUtil;
import org.eclipse.ocl.pivot.utilities.NameUtil;
import org.eclipse.qvtd.compiler.CompilerChainException;
import org.eclipse.qvtd.pivot.qvtbase.Function;
import org.eclipse.qvtd.pivot.qvtbase.FunctionParameter;
import org.eclipse.qvtd.pivot.qvtcore.utilities.QVTcoreHelper;
import org.eclipse.qvtd.pivot.qvtrelation.Key;
/**
* KeyToMappingForIdentification synthesizes a Core constructor function/querythat enforces the uniqueness of a realized variable
* with respect to its key parts.
*/
public class KeyToFunctionForIdentification
{
protected final @NonNull QVTrToQVTc qvtr2qvtc;
protected final @NonNull Key rKey;
public KeyToFunctionForIdentification(@NonNull QVTrToQVTc qvtr2qvtc, @NonNull Key rKey) {
this.qvtr2qvtc = qvtr2qvtc;
this.rKey = rKey;
}
public @NonNull Function transform() throws CompilerChainException {
QVTcoreHelper helper = qvtr2qvtc.getHelper();
String functionName = qvtr2qvtc.createKeyFunctionName(rKey);
List<@NonNull FunctionParameter> asParameters = new ArrayList<@NonNull FunctionParameter>();
List<@NonNull ShadowPart> asShadowParts = new ArrayList<@NonNull ShadowPart>();
for (@NonNull Property keyProperty : ClassUtil.nullFree(rKey.getPart())) {
FunctionParameter cParameter = helper.createFunctionParameter(keyProperty);
asParameters.add(cParameter);
ShadowPart asShadowPart = helper.createShadowPart(keyProperty, helper.createVariableExp(cParameter));
asShadowParts.add(asShadowPart);
}
for (@NonNull Property keyOppositeProperty : ClassUtil.nullFree(rKey.getOppositePart())) {
Property keyProperty = ClassUtil.nonNullState(keyOppositeProperty.getOpposite());
FunctionParameter cParameter = helper.createFunctionParameter(keyProperty);
asParameters.add(cParameter);
ShadowPart asShadowPart = helper.createShadowPart(keyProperty, helper.createVariableExp(cParameter));
asShadowParts.add(asShadowPart);
}
Collections.sort(asParameters, NameUtil.NAMEABLE_COMPARATOR);
org.eclipse.ocl.pivot.@NonNull Class identifiedClass = ClassUtil.nonNullState(rKey.getIdentifies());
Function cFunction = helper.createFunction(functionName, identifiedClass, true, asParameters);
OCLExpression asShadowExp = helper.createShadowExp(identifiedClass, asShadowParts);
cFunction.setQueryExpression(asShadowExp);
return cFunction;
}
}
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