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/*******************************************************************************
* Copyright (c) 2010-2017, 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.base;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import org.eclipse.viatra.dse.statecode.IStateCoder;
import org.eclipse.viatra.query.runtime.api.IPatternMatch;
import org.eclipse.viatra.transformation.evm.api.Activation;
import org.eclipse.viatra.transformation.evm.api.resolver.ChangeableConflictSet;
import org.eclipse.viatra.transformation.evm.api.resolver.ConflictResolver;
import org.eclipse.viatra.transformation.evm.api.resolver.ConflictSet;
public class ActivationCodesConflictSet implements ChangeableConflictSet {
private static class ActivationCodesMultiBiMap {
public Map<Activation<?>, Object> activationsToCodes = new HashMap<>();
public Map<Object, Set<Activation<?>>> codesToActivations = new HashMap<>();
public void addActivation(Activation<?> activation, Object activationCode) {
activationsToCodes.put(activation, activationCode);
codesToActivations.computeIfAbsent(activationCode, k -> new HashSet<>()).add(activation);
}
public void removeActivaion(Activation<?> activation) {
Object activationCode = activationsToCodes.remove(activation);
Set<Activation<?>> activations = codesToActivations.get(activationCode);
if (activations != null) {
activations.remove(activation);
}
}
public void clear() {
activationsToCodes.clear();
codesToActivations.clear();
}
}
protected ActivationCodesMultiBiMap activationCodes;
protected IStateCoder stateCoder;
protected Set<Activation<?>> newActivations = new HashSet<>();
protected Set<Activation<?>> removedActivations = new HashSet<>();
// private Logger logger = Logger.getLogger(getClass());
private boolean isIncremental = false;
private ConflictSet nextActivationsConflictSet;
public void setIncremental(boolean isIncremental) {
this.isIncremental = isIncremental;
}
public ActivationCodesConflictSet(ConflictSet nextActivationsConflictSet, IStateCoder stateCoder) {
Objects.requireNonNull(nextActivationsConflictSet);
this.nextActivationsConflictSet = nextActivationsConflictSet;
this.stateCoder = stateCoder;
activationCodes = new ActivationCodesMultiBiMap();
}
private Object createActivationCode(Activation<?> activation) {
return stateCoder.createActivationCode((IPatternMatch) activation.getAtom());
}
@Override
public boolean removeActivation(Activation<?> activation) {
if (isIncremental) {
//*
removedActivations.add(activation);
newActivations.remove(activation);
/*/
if(!removedActivations.add(activation)) {
logger.debug("Abnormal: already marked to remove: " + activation);
} else {
logger.debug("marked to remove: " + activation);
}
if(newActivations.remove(activation)) {
logger.debug("Abnormal: removed from new activations: " + activation);
}
//*/
}
return false;
}
@Override
public boolean addActivation(Activation<?> activation) {
if (isIncremental) {
//*
newActivations.add(activation);
removedActivations.remove(activation);
/*/
if (activation.isEnabled()) {
if (!newActivations.add(activation)) {
logger.debug("Abnormal: already added as new: " + activation);
} else {
logger.debug("activation added: " + activation);
}
}
if(removedActivations.remove(activation)) {
logger.debug("Abnormal: was already marked to remove: " + activation);
}
//*/
}
return false;
}
public Object getActivationId(Activation<?> activation) {
return activationCodes.activationsToCodes.get(activation);
}
public Activation<?> getActivation(Object activationId) {
Set<Activation<?>> activationsSet = activationCodes.codesToActivations.get(activationId);
if (activationsSet == null || activationsSet.isEmpty()) {
return null;
} else {
return activationsSet.iterator().next();
}
}
public void updateActivationCodes() {
// logger.debug("Updating activation codes.");
if (isIncremental) {
for (Activation<?> activation : removedActivations) {
activationCodes.removeActivaion(activation);
// logger.debug("removed activation: " + activationId);
}
for (Activation<?> activation : newActivations) {
if (activation.getState().isInactive()) {
continue;
}
Object activationCode = createActivationCode(activation);
activationCodes.addActivation(activation, activationCode);
// logger.debug("new activation: " + activationId);
// Activation<?> similarActivation = activationIds.inverse().get(activationId);
// if (similarActivation != null) {
// logger.debug("Activation " + toStringAct(activation) + " is already present with id: " + activationId);
// if (similarActivation.isEnabled()) {
// logger.warn("Duplicate activation code: " + activationId);
// } else {
// logger.debug("Force put: " + activationId);
// }
// continue;
// }
// activationIds.put(activation, activationId);
}
removedActivations.clear();
newActivations.clear();
} else {
activationCodes.clear();
for (Activation<?> activation : nextActivationsConflictSet.getNextActivations()) {
Object activationCode = createActivationCode(activation);
activationCodes.addActivation(activation, activationCode);
}
}
}
protected void reinitWithActivations(ConflictSet nextActivationsConflictSet) {
this.nextActivationsConflictSet = nextActivationsConflictSet;
activationCodes.clear();
for (Activation<?> activation : nextActivationsConflictSet.getNextActivations()) {
Object activationCode = createActivationCode(activation);
activationCodes.addActivation(activation, activationCode);
}
}
@Override
public Activation<?> getNextActivation() {
throw new UnsupportedOperationException();
}
@Override
public Set<Activation<?>> getNextActivations() {
throw new UnsupportedOperationException();
}
@Override
public Set<Activation<?>> getConflictingActivations() {
throw new UnsupportedOperationException();
}
@Override
public ConflictResolver getConflictResolver() {
throw new UnsupportedOperationException();
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
for (Object activationCode : activationCodes.activationsToCodes.values()) {
sb.append(activationCode);
sb.append(" | ");
}
return sb.toString();
}
public Collection<Object> getCurrentActivationCodes() {
return activationCodes.activationsToCodes.values();
}
}
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