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ViewerEditingContextDataFetcher.java
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ViewerEditingContextDataFetcher.java
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/*******************************************************************************
* Copyright (c) 2024 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.web.application.editingcontext.controllers;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import org.eclipse.sirius.components.annotations.spring.graphql.QueryDataFetcher;
import org.eclipse.sirius.components.graphql.api.IDataFetcherWithFieldCoordinates;
import org.eclipse.sirius.components.graphql.api.LocalContextConstants;
import org.eclipse.sirius.web.application.editingcontext.services.api.IEditingContextApplicationService;
import graphql.execution.DataFetcherResult;
import graphql.schema.DataFetchingEnvironment;
/**
* Data fetcher for the field Viewer#editingContext.
*
* @author sbegaudeau
*/
@QueryDataFetcher(type = "Viewer", field = "editingContext")
public class ViewerEditingContextDataFetcher implements IDataFetcherWithFieldCoordinates<DataFetcherResult<String>> {
private static final String EDITING_CONTEXT_ID_ARGUMENT = "editingContextId";
private final IEditingContextApplicationService editingContextApplicationService;
public ViewerEditingContextDataFetcher(IEditingContextApplicationService editingContextApplicationService) {
this.editingContextApplicationService = Objects.requireNonNull(editingContextApplicationService);
}
@Override
public DataFetcherResult<String> get(DataFetchingEnvironment environment) throws Exception {
String editingContextId = environment.getArgument(EDITING_CONTEXT_ID_ARGUMENT);
if (!this.editingContextApplicationService.existsById(editingContextId)) {
return null;
}
Map<String, Object> localContext = new HashMap<>();
localContext.put(LocalContextConstants.EDITING_CONTEXT_ID, editingContextId);
return DataFetcherResult.<String>newResult()
.data(editingContextId)
.localContext(localContext)
.build();
}
}