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ReferenceWidgetReferenceDataFetcher.java
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ReferenceWidgetReferenceDataFetcher.java
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/*******************************************************************************
* Copyright (c) 2023 Obeo.
* 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
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.sirius.components.collaborative.widget.reference.datafetchers;
import java.util.Objects;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.sirius.components.annotations.spring.graphql.QueryDataFetcher;
import org.eclipse.sirius.components.emf.services.api.IEMFKindService;
import org.eclipse.sirius.components.graphql.api.IDataFetcherWithFieldCoordinates;
import org.eclipse.sirius.components.widget.reference.Reference;
import org.eclipse.sirius.components.widget.reference.ReferenceWidget;
import graphql.schema.DataFetchingEnvironment;
/**
* Data fetcher for ReferenceWidget.reference.
*
* @author pcdavid
*/
@QueryDataFetcher(type = "ReferenceWidget", field = "reference")
public class ReferenceWidgetReferenceDataFetcher implements IDataFetcherWithFieldCoordinates<Reference> {
private final IEMFKindService emfKindService;
public ReferenceWidgetReferenceDataFetcher(IEMFKindService emfKindService) {
this.emfKindService = Objects.requireNonNull(emfKindService);
}
@Override
public Reference get(DataFetchingEnvironment environment) throws Exception {
ReferenceWidget referenceWidget = environment.getSource();
var feature = referenceWidget.getSetting().getEStructuralFeature();
return new Reference(this.emfKindService.getKind(referenceWidget.getSetting().getEObject().eClass()),
feature.getName(),
this.emfKindService.getKind(((EReference) feature).getEReferenceType()),
((EReference) feature).isContainment(),
feature.isMany());
}
}