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ResourceToDocumentService.java
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ResourceToDocumentService.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.services;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Optional;
import java.util.UUID;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.sirius.components.emf.ResourceMetadataAdapter;
import org.eclipse.sirius.components.emf.services.EObjectIDManager;
import org.eclipse.sirius.emfjson.resource.JsonResource;
import org.eclipse.sirius.web.application.UUIDParser;
import org.eclipse.sirius.web.application.editingcontext.services.api.IResourceToDocumentService;
import org.eclipse.sirius.web.domain.boundedcontexts.semanticdata.Document;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
/**
* Used to transform an EMF resource into a document.
*
* @author sbegaudeau
*/
@Service
public class ResourceToDocumentService implements IResourceToDocumentService {
private final Logger logger = LoggerFactory.getLogger(ResourceToDocumentService.class);
@Override
public Optional<DocumentData> toDocument(Resource resource) {
var serializationListener = new JsonResourceSerializationListener();
HashMap<Object, Object> options = new HashMap<>();
options.put(JsonResource.OPTION_ID_MANAGER, new EObjectIDManager());
options.put(JsonResource.OPTION_SCHEMA_LOCATION, true);
options.put(JsonResource.OPTION_SERIALIZATION_LISTENER, serializationListener);
Optional<DocumentData> optionalDocumentData = Optional.empty();
try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
resource.save(outputStream, options);
for (Resource.Diagnostic warning : resource.getWarnings()) {
this.logger.warn(warning.getMessage());
}
for (Resource.Diagnostic error : resource.getErrors()) {
this.logger.warn(error.getMessage());
}
var name = resource.eAdapters().stream()
.filter(ResourceMetadataAdapter.class::isInstance)
.map(ResourceMetadataAdapter.class::cast)
.findFirst()
.map(ResourceMetadataAdapter::getName)
.orElse("");
var content = outputStream.toString();
var resourceId = resource.getURI().path().substring(1);
var documentId = new UUIDParser().parse(resourceId).orElse(UUID.randomUUID());
var document = Document.newDocument(documentId)
.name(name)
.content(content)
.build();
var documentData = new DocumentData(document, serializationListener.getePackageEntries());
optionalDocumentData = Optional.of(documentData);
} catch (IllegalArgumentException | IOException exception) {
this.logger.warn(exception.getMessage(), exception);
}
return optionalDocumentData;
}
}