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/*
* SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.dse.transition.objectives;
import tools.refinery.store.model.Model;
import tools.refinery.store.model.ModelStore;
import tools.refinery.store.model.ModelStoreBuilder;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
public class CompositeObjective implements Objective {
private final List<Objective> objectives;
CompositeObjective(Collection<? extends Objective> objectives) {
var unwrappedObjectives = new ArrayList<Objective>();
for (var objective : objectives) {
if (objective instanceof CompositeObjective compositeObjective) {
unwrappedObjectives.addAll(compositeObjective.getObjectives());
} else {
unwrappedObjectives.add(objective);
}
}
this.objectives = Collections.unmodifiableList(unwrappedObjectives);
}
public List<Objective> getObjectives() {
return objectives;
}
@Override
public boolean isAlwaysZero(ModelStore store) {
for (var objective : objectives) {
if (!objective.isAlwaysZero(store)) {
return false;
}
}
return true;
}
@Override
public ObjectiveCalculator createCalculator(Model model) {
var calculators = new ArrayList<ObjectiveCalculator>();
for (var objective : objectives) {
if (!objective.isAlwaysZero(model.getStore())) {
calculators.add(objective.createCalculator(model));
}
}
return () -> {
double value = 0;
for (var calculator : calculators) {
value += calculator.getValue();
}
return value;
};
}
@Override
public void configure(ModelStoreBuilder storeBuilder) {
for (var objective : objectives) {
objective.configure(storeBuilder);
}
}
}
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