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package org.eclipse.viatra.solver.data.query.test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.util.Collection;
import java.util.Set;
import org.eclipse.viatra.query.runtime.api.AdvancedViatraQueryEngine;
import org.eclipse.viatra.query.runtime.api.GenericPatternMatch;
import org.eclipse.viatra.query.runtime.api.GenericPatternMatcher;
import org.eclipse.viatra.query.runtime.api.GenericQuerySpecification;
import org.eclipse.viatra.query.runtime.api.ViatraQueryEngine;
import org.eclipse.viatra.solver.data.model.Model;
import org.eclipse.viatra.solver.data.model.ModelStore;
import org.eclipse.viatra.solver.data.model.ModelStoreImpl;
import org.eclipse.viatra.solver.data.model.Tuple;
import org.eclipse.viatra.solver.data.model.representation.Relation;
import org.eclipse.viatra.solver.data.model.representation.TruthValue;
import org.eclipse.viatra.solver.data.query.RelationalQuery;
import org.eclipse.viatra.solver.data.query.RelationalScope;
import org.eclipse.viatra.solver.data.query.view.FilteredRelationView;
import org.eclipse.viatra.solver.data.query.view.FunctionalRelationView;
import org.eclipse.viatra.solver.data.query.view.RelationView;
import org.eclipse.viatra.solver.data.query.view.TupleRelationView;
import org.junit.jupiter.api.Test;
class QueryTest {
@Test
void minimalTest() {
Relation<Boolean> person = new Relation<>("Person", 1, false);
RelationView<Boolean> persionView = new TupleRelationView(person);
GenericQuerySpecification<GenericPatternMatcher> personQuery = (new RelationalQuery("PersonQuery"))
.addParameter("p", persionView).addConstraint(persionView, "p").build();
ModelStore store = new ModelStoreImpl(Set.of(person));
Model model = store.createModel();
model.put(person, Tuple.of(0), true);
model.put(person, Tuple.of(1), true);
RelationalScope scope = new RelationalScope(model, Set.of(persionView));
ViatraQueryEngine engine = AdvancedViatraQueryEngine.on(scope);
GenericPatternMatcher personMatcher = engine.getMatcher(personQuery);
assertEquals(2, personMatcher.countMatches());
}
void modelBuildingTest() {
Relation<Boolean> person = new Relation<>("Person", 1, false);
Relation<Integer> age = new Relation<Integer>("age", 1, null);
Relation<TruthValue> friend = new Relation<>("friend", 2, TruthValue.False);
ModelStore store = new ModelStoreImpl(Set.of(person, age, friend));
Model model = store.createModel();
model.put(person, Tuple.of(0), true);
model.put(person, Tuple.of(1), true);
model.put(age, Tuple.of(0), 3);
model.put(age, Tuple.of(1), 1);
model.put(friend, Tuple.of(0, 1), TruthValue.True);
model.put(friend, Tuple.of(1, 0), TruthValue.Unknown);
// Sanity check
assertTrue(model.get(person, Tuple.of(0)));
assertTrue(model.get(person, Tuple.of(1)));
assertFalse(model.get(person, Tuple.of(2)));
RelationView<Boolean> persionView = new TupleRelationView(person);
RelationView<Integer> ageView = new FunctionalRelationView<>(age);
RelationView<TruthValue> friendMustView = new FilteredRelationView<TruthValue>(friend, (k, v) -> v.must());
RelationView<TruthValue> friendMayView = new FilteredRelationView<TruthValue>(friend, (k, v) -> v.may());
RelationalScope scope = new RelationalScope(model, Set.of(persionView, ageView, friendMustView, friendMayView));
GenericQuerySpecification<GenericPatternMatcher> personQuery = (new RelationalQuery("PersonQuery"))
.addParameter("p", persionView).addConstraint(persionView, "p").build();
ViatraQueryEngine engine = AdvancedViatraQueryEngine.on(scope);
GenericPatternMatcher personMatcher = engine.getMatcher(personQuery);
Collection<GenericPatternMatch> personMatches = personMatcher.getAllMatches();
for (GenericPatternMatch personMatch : personMatches) {
System.out.println(personMatch);
}
}
}
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