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/*
* SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.reasoning.scope;
import com.google.ortools.Loader;
import tools.refinery.store.dse.propagation.PropagationBuilder;
import tools.refinery.store.model.ModelStoreBuilder;
import tools.refinery.store.model.ModelStoreConfiguration;
import tools.refinery.store.reasoning.representation.PartialRelation;
import tools.refinery.store.reasoning.translator.TranslationException;
import tools.refinery.store.reasoning.translator.multiobject.MultiObjectTranslator;
import tools.refinery.store.representation.Symbol;
import tools.refinery.store.representation.cardinality.CardinalityInterval;
import tools.refinery.store.representation.cardinality.FiniteUpperCardinality;
import java.util.*;
public class ScopePropagator implements ModelStoreConfiguration {
private final Symbol<CardinalityInterval> countSymbol;
private final Map<PartialRelation, CardinalityInterval> scopes = new LinkedHashMap<>();
private final List<TypeScopePropagator.Factory> typeScopePropagatorFactories = new ArrayList<>();
public ScopePropagator() {
this(MultiObjectTranslator.COUNT_STORAGE);
}
public ScopePropagator(Symbol<CardinalityInterval> countSymbol) {
if (countSymbol.arity() != 1) {
throw new IllegalArgumentException("Count symbol must have arty 1, got %s with arity %d instead"
.formatted(countSymbol, countSymbol.arity()));
}
if (!countSymbol.valueType().equals(CardinalityInterval.class)) {
throw new IllegalArgumentException("Count symbol must have CardinalityInterval values");
}
if (countSymbol.defaultValue() != null) {
throw new IllegalArgumentException("Count symbol must default value null");
}
this.countSymbol = countSymbol;
}
public ScopePropagator scope(PartialRelation type, CardinalityInterval interval) {
if (type.arity() != 1) {
throw new TranslationException(type, "Only types with arity 1 may have scopes, got %s with arity %d"
.formatted(type, type.arity()));
}
var newValue = scopes.compute(type, (ignoredKey, oldValue) ->
oldValue == null ? interval : oldValue.meet(interval));
if (newValue.isEmpty()) {
throw new TranslationException(type, "Unsatisfiable scope for type %s".formatted(type));
}
return this;
}
public ScopePropagator scopes(Map<PartialRelation, CardinalityInterval> scopes) {
return scopes(scopes.entrySet());
}
public ScopePropagator scopes(Collection<Map.Entry<PartialRelation, CardinalityInterval>> scopes) {
for (var entry : scopes) {
scope(entry.getKey(), entry.getValue());
}
return this;
}
@Override
public void apply(ModelStoreBuilder storeBuilder) {
createTypeScopePropagatorFactories();
Loader.loadNativeLibraries();
for (var factory : typeScopePropagatorFactories) {
factory.configure(storeBuilder);
}
storeBuilder.getAdapter(PropagationBuilder.class)
.propagator(model -> new BoundScopePropagator(model, this));
}
private void createTypeScopePropagatorFactories() {
for (var entry : scopes.entrySet()) {
var type = entry.getKey();
var bounds = entry.getValue();
if (bounds.lowerBound() > 0) {
var lowerFactory = new LowerTypeScopePropagator.Factory(type, bounds.lowerBound());
typeScopePropagatorFactories.add(lowerFactory);
}
if (bounds.upperBound() instanceof FiniteUpperCardinality finiteUpperCardinality) {
var upperFactory = new UpperTypeScopePropagator.Factory(type,
finiteUpperCardinality.finiteUpperBound());
typeScopePropagatorFactories.add(upperFactory);
}
}
}
Symbol<CardinalityInterval> getCountSymbol() {
return countSymbol;
}
List<TypeScopePropagator.Factory> getTypeScopePropagatorFactories() {
return typeScopePropagatorFactories;
}
}
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