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/**
* Copyright (c) 2013 Mia-Software.
* 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:
* Gregoire Dupe (Mia-Software) - Bug 418885 - ETypedElementSwitchQuery implemented using a deprecated query evaluator extension point
*/
package org.eclipse.papyrus.emf.facet.custom.core.internal.query;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.papyrus.emf.facet.custom.metamodel.v0_2_0.custom.ETypedElementCase;
import org.eclipse.papyrus.emf.facet.custom.metamodel.v0_2_0.custom.ETypedElementSwitchQuery;
import org.eclipse.papyrus.emf.facet.efacet.core.IDerivedTypedElementManager;
import org.eclipse.papyrus.emf.facet.efacet.core.IFacetManager;
import org.eclipse.papyrus.emf.facet.efacet.core.exception.DerivedTypedElementException;
import org.eclipse.papyrus.emf.facet.efacet.core.query.IQueryImplementation;
import org.eclipse.papyrus.emf.facet.efacet.metamodel.v0_2_0.efacet.DerivedTypedElement;
import org.eclipse.papyrus.emf.facet.efacet.metamodel.v0_2_0.efacet.FacetOperation;
import org.eclipse.papyrus.emf.facet.efacet.metamodel.v0_2_0.efacet.ParameterValue;
import org.eclipse.papyrus.emf.facet.efacet.metamodel.v0_2_0.efacet.extensible.Query;
public class SwitchQueryImplementation implements IQueryImplementation {
private static final String PARAM_NAME = "eStructuralFeature"; //$NON-NLS-1$
private final ETypedElementSwitchQuery query;
private boolean checkResultType = false;
/**
* @param query
* @param query
* the javaQuery to be evaluated
*/
public SwitchQueryImplementation(final ETypedElementSwitchQuery query) {
this.query = query;
}
public Object getValue(final Query query2, final DerivedTypedElement feature, final EObject source, final List<ParameterValue> parameterValues, final IFacetManager facetManager) throws DerivedTypedElementException {
EStructuralFeature sfParam = null;
Query subQuery = null;
for(final ParameterValue parameterValue : parameterValues) {
if(parameterValue.getParameter().getName().equals(PARAM_NAME)) {
sfParam = (EStructuralFeature)parameterValue.getValue();
}
}
for(ETypedElementCase eTECase : this.query.getCases()) {
if(eTECase.getCase() == sfParam) {
subQuery = eTECase.getValue();
if(subQuery != null) {
break;
}
}
}
if(subQuery == null) {
//The case is not supported: call super operation if possible (Avoid NPEs for unsupported cases)
if(feature instanceof FacetOperation) {
FacetOperation operation = (FacetOperation)feature;
DerivedTypedElement superOperation = operation.getOverride();
if(superOperation == null) {
return null;
}
if(superOperation instanceof FacetOperation) {
FacetOperation superFacetOperation = (FacetOperation)superOperation;
//We call the super-operation's query
subQuery = superFacetOperation.getQuery();
} else {
//What does this mean?
throw new UnsupportedOperationException("Overridden typed element is not a FacetOperation");
}
}
if(subQuery == null) {
return null;
}
}
//Evaluate the nestedQuery
return IDerivedTypedElementManager.INSTANCE.evaluate(subQuery, source, parameterValues, facetManager);
}
public void setValue(final Query query2, final DerivedTypedElement feature, final EObject source, final List<ParameterValue> parameterValues, final Object newValue) throws DerivedTypedElementException {
throw new UnsupportedOperationException("Not implemented yet"); //$NON-NLS-1$
}
public boolean isCheckResultType() {
return this.checkResultType;
}
public void setCheckResultType(final boolean checkResultType) {
this.checkResultType = checkResultType;
}
}
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