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/*******************************************************************************
* Copyright (c) 2010-2015, Andras Szabolcs Nagy and Daniel Varro
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package org.eclipse.viatra.dse.statecoding;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import org.apache.log4j.Logger;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.viatra.dse.api.DSEException;
import org.eclipse.viatra.query.runtime.api.ViatraQueryEngine;
import org.eclipse.viatra.query.runtime.base.api.IndexingLevel;
import org.eclipse.viatra.query.runtime.base.api.NavigationHelper;
import org.eclipse.viatra.query.runtime.emf.EMFScope;
import org.eclipse.viatra.query.runtime.exception.ViatraQueryException;
public class IncrementalObjectProvider implements IObjectsProvider {
private Logger logger = Logger.getLogger(getClass());
private NavigationHelper baseIndex;
@Override
public void init(Notifier notifier, StatecodingDependencyGraph statecodingDependencyGraph) {
try {
EMFScope scope = new EMFScope(notifier);
ViatraQueryEngine queryEngine = ViatraQueryEngine.on(scope);
Set<EClass> classes = new HashSet<EClass>();
// Set<EReference> references = new HashSet<EReference>();
for (StatecodingNode node : statecodingDependencyGraph.getNodes()) {
classes.add(node.getClazz());
// for (StatecodingDependency dependency : node.getStatecodingDependencies()) {
// // TODO inverse reference
// references.add(dependency.eReference);
// }
}
baseIndex = EMFScope.extractUnderlyingEMFIndex(queryEngine);
baseIndex.registerEClasses(classes, IndexingLevel.FULL);
} catch (ViatraQueryException e) {
logger.error("Failed to initialize VIATRA Query engine on the given notifier", e);
throw new DSEException("Failed to initialize VIATRA Query engine on the given notifier");
}
}
@Override
public Collection<EObject> getEObjects(EClass eClass) {
return baseIndex.getAllInstances(eClass);
}
}
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