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/*******************************************************************************
* Copyright (c) 2010-2016, Grill Balázs, IncQuery Labs Ltd.
* 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 tools.refinery.viatra.runtime.base.core;
import java.util.HashMap;
import java.util.Map;
import org.apache.log4j.Logger;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EStructuralFeature;
/**
* @author Grill Balázs
* @noextend This class is not intended to be subclassed by clients.
*/
public class EMFBaseIndexStatisticsStore extends AbstractBaseIndexStore {
/**
* A common map is used to store instance/value statistics. The key can be an {@link EClassifier},
* {@link EStructuralFeature} or a String ID.
*/
private final Map<Object, Integer> stats = new HashMap<Object, Integer>();
public EMFBaseIndexStatisticsStore(NavigationHelperImpl navigationHelper, Logger logger) {
super(navigationHelper, logger);
}
public void addFeature(Object element, Object feature){
addInstance(feature);
}
public void removeFeature(Object element, Object feature){
removeInstance(feature);
}
public void addInstance(Object key){
Integer v = stats.get(key);
stats.put(key, v == null ? 1 : v+1);
}
public void removeInstance(Object key){
Integer v = stats.get(key);
if(v == null || v <= 0) {
navigationHelper.logIncidentStatRemoval(key);
return;
}
if (v.intValue() == 1){
stats.remove(key);
}else{
stats.put(key, v-1);
}
}
public int countInstances(Object key){
Integer v = stats.get(key);
return v == null ? 0 : v.intValue();
}
public void removeType(Object key){
stats.remove(key);
}
public int countFeatures(Object feature) {
return countInstances(feature);
}
}
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