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/*
* SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.reasoning.translator.multiobject;
import tools.refinery.store.model.Interpretation;
import tools.refinery.store.model.Model;
import tools.refinery.store.reasoning.refinement.StorageRefiner;
import tools.refinery.store.representation.Symbol;
import tools.refinery.logic.term.cardinalityinterval.CardinalityInterval;
import tools.refinery.logic.term.cardinalityinterval.CardinalityIntervals;
import tools.refinery.store.tuple.Tuple;
class MultiObjectStorageRefiner implements StorageRefiner {
private final Interpretation<CardinalityInterval> countInterpretation;
public MultiObjectStorageRefiner(Symbol<CardinalityInterval> countSymbol, Model model) {
countInterpretation = model.getInterpretation(countSymbol);
}
@Override
public boolean split(int parentNode, int childNode) {
var parentKey = Tuple.of(parentNode);
var parentCount = countInterpretation.get(parentKey);
if (parentCount == null) {
return false;
}
var newParentCount = parentCount.take(1);
if (newParentCount.isEmpty()) {
return false;
}
var childKey = Tuple.of(childNode);
countInterpretation.put(parentKey, newParentCount);
countInterpretation.put(childKey, CardinalityIntervals.ONE);
return true;
}
@Override
public boolean cleanup(int nodeToDelete) {
var previousCount = countInterpretation.put(Tuple.of(nodeToDelete), null);
return previousCount.lowerBound() == 0;
}
}
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