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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.crossreference;
import org.jetbrains.annotations.NotNull;
import tools.refinery.store.model.Model;
import tools.refinery.store.reasoning.ReasoningAdapter;
import tools.refinery.store.reasoning.refinement.PartialModelInitializer;
import tools.refinery.store.reasoning.representation.PartialRelation;
import tools.refinery.store.reasoning.seed.ModelSeed;
import tools.refinery.store.reasoning.translator.TranslationException;
import tools.refinery.store.representation.Symbol;
import tools.refinery.logic.term.truthvalue.TruthValue;
import tools.refinery.store.tuple.Tuple;
import java.util.LinkedHashMap;
class UndirectedCrossReferenceInitializer implements PartialModelInitializer {
private final PartialRelation linkType;
private final PartialRelation sourceType;
private final Symbol<TruthValue> symbol;
UndirectedCrossReferenceInitializer(PartialRelation linkType, PartialRelation sourceType,
Symbol<TruthValue> symbol) {
this.linkType = linkType;
this.sourceType = sourceType;
this.symbol = symbol;
}
@Override
public void initialize(Model model, ModelSeed modelSeed) {
var reasoningAdapter = model.getAdapter(ReasoningAdapter.class);
var mergedMap = getMergedMap(modelSeed);
var sourceRefiner = reasoningAdapter.getRefiner(sourceType);
var interpretation = model.getInterpretation(symbol);
for (var entry : mergedMap.entrySet()) {
var key = entry.getKey();
var value = entry.getValue();
interpretation.put(key, value);
if (value.must()) {
boolean merged = sourceRefiner.merge(Tuple.of(key.get(0)), TruthValue.TRUE) &&
sourceRefiner.merge(Tuple.of(key.get(1)), TruthValue.TRUE);
if (!merged) {
throw new IllegalArgumentException("Failed to merge end types of reference %s for key %s"
.formatted(linkType, key));
}
}
}
}
@NotNull
private LinkedHashMap<Tuple, TruthValue> getMergedMap(ModelSeed modelSeed) {
var defaultValue = symbol.defaultValue();
var originalMap = new LinkedHashMap<Tuple, TruthValue>();
var cursor = modelSeed.getCursor(linkType, defaultValue);
while (cursor.move()) {
if (originalMap.put(cursor.getKey(), cursor.getValue()) != null) {
throw new TranslationException(linkType, "Duplicate value for key " + cursor.getKey());
}
}
var mergedMap = LinkedHashMap.<Tuple, TruthValue>newLinkedHashMap(originalMap.size());
for (var entry : originalMap.entrySet()) {
var key = entry.getKey();
var value = entry.getValue();
int first = key.get(0);
int second = key.get(1);
var oppositeKey = Tuple.of(second, first);
var oppositeValue = originalMap.get(oppositeKey);
if (oppositeValue != null && second < first) {
// Already processed entry.
continue;
}
var mergedValue = value.merge(oppositeValue == null ? defaultValue : oppositeValue);
mergedMap.put(key, mergedValue);
if (first != second) {
mergedMap.put(oppositeKey, mergedValue);
}
}
return mergedMap;
}
}
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