Examples with Rule com.vaticle.typedb.core.logic.Rule used on opensource projects

Example 6 with Rule

use of com.vaticle.typedb.core.logic.Rule in project grakn by graknlabs.

the class UnifyIsaConcludableTest method isa_predicates_can_filter_answers.

// TODO: enable when we have query rewriting to handle all predicates at once
@Ignore
@Test
public void isa_predicates_can_filter_answers() {
    String conjunction = "{ $a isa first-name; $a > 'b'; $a < 'y'; $a contains 'j'; }";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(conjunction, logicMgr));
    Concludable.Isa queryConcludable = concludables.iterator().next().asIsa();
    Rule rule = createRule("isa-rule", "{ $x isa person; }", "$x has first-name \"john\"", logicMgr);
    List<Unifier> unifiers = queryConcludable.unify(rule.conclusion(), conceptMgr).toList();
    assertEquals(1, unifiers.size());
    Unifier unifier = unifiers.get(0);
    // test requirements
    assertEquals(0, unifier.requirements().types().size());
    assertEquals(1, unifier.requirements().isaExplicit().size());
    assertEquals(3, unifier.requirements().predicates().size());
    // test filter allows a valid answer
    assertEquals(set(Label.of("first-name")), unifier.requirements().isaExplicit().get(Identifier.Variable.name("a")));
    Map<Identifier.Variable, Concept> concepts = map(pair(Identifier.Variable.name("x"), instanceOf("first-name", "johnny")));
    FunctionalIterator<ConceptMap> unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertTrue(unified.hasNext());
    assertEquals(1, unified.next().concepts().size());
    // filter out using >
    concepts = map(pair(Identifier.Variable.name("x"), instanceOf("first-name", "abe")));
    unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertFalse(unified.hasNext());
    // filter out using <
    concepts = map(pair(Identifier.Variable.name("x"), instanceOf("first-name", "zack")));
    unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertFalse(unified.hasNext());
    // filter out using contains
    concepts = map(pair(Identifier.Variable.name("x"), instanceOf("first-name", "carol")));
    unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertFalse(unified.hasNext());
}

Example 7 with Rule

use of com.vaticle.typedb.core.logic.Rule in project grakn by graknlabs.

the class BasicTest method write_and_retrieve_attribute_ownership_rule.

@Test
public void write_and_retrieve_attribute_ownership_rule() throws IOException {
    Util.resetDirectory(dataDir);
    try (TypeDB.DatabaseManager typedb = CoreDatabaseManager.open(options)) {
        typedb.create(database);
        try (TypeDB.Session session = typedb.session(database, Arguments.Session.Type.SCHEMA)) {
            try (TypeDB.Transaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                ConceptManager conceptMgr = txn.concepts();
                LogicManager logicMgr = txn.logic();
                AttributeType name = conceptMgr.putAttributeType("name", STRING);
                EntityType person = conceptMgr.putEntityType("person");
                RelationType friendship = conceptMgr.putRelationType("friendship");
                friendship.setRelates("friend");
                person.setPlays(friendship.getRelates("friend"));
                person.setOwns(name);
                logicMgr.putRule("people-have-names", TypeQL.parsePattern("{$x isa person; }").asConjunction(), TypeQL.parseVariable("$x has name \"i have a name\"").asThing());
                txn.commit();
            }
            try (TypeDB.Transaction txn = session.transaction(Arguments.Transaction.Type.READ)) {
                ConceptManager conceptMgr = txn.concepts();
                LogicManager logicMgr = txn.logic();
                Rule rule = logicMgr.getRule("people-have-names");
                Pattern when = rule.getWhenPreNormalised();
                ThingVariable<?> then = rule.getThenPreNormalised();
                assertEquals(TypeQL.parsePattern("{$x isa person;}"), when);
                assertEquals(TypeQL.parseVariable("$x has name \"i have a name\""), then);
            }
        }
    }
}

Example 8 with Rule

use of com.vaticle.typedb.core.logic.Rule in project grakn by graknlabs.

the class RuleService method execute.

public void execute(Transaction.Req req) {
    LogicProto.Rule.Req ruleReq = req.getRuleReq();
    Rule rule = notNull(logicMgr.getRule(ruleReq.getLabel()));
    UUID reqID = byteStringAsUUID(req.getReqId());
    switch(ruleReq.getReqCase()) {
        case RULE_DELETE_REQ:
            delete(rule, reqID);
            return;
        case RULE_SET_LABEL_REQ:
            setLabel(rule, ruleReq.getRuleSetLabelReq().getLabel(), reqID);
            return;
        case REQ_NOT_SET:
        default:
            throw TypeDBException.of(UNKNOWN_REQUEST_TYPE);
    }
}

Example 9 with Rule

use of com.vaticle.typedb.core.logic.Rule in project grakn by graknlabs.

the class UnifyRelationConcludableTest method unUnify_produces_cartesian_named_types_only_for_unbound_vars.

@Test
public void unUnify_produces_cartesian_named_types_only_for_unbound_vars() {
    String conjunction = "{$r ($role: $x) isa $rel;}";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(conjunction, logicMgr));
    Concludable.Relation queryConcludable = concludables.iterator().next().asRelation();
    Rule rule = createRule("people-are-self-friends", "{ $x isa person; }", " (friend: $x) isa friendship ", logicMgr);
    List<Unifier> unifiers = queryConcludable.unify(rule.conclusion(), conceptMgr).toList();
    assertEquals(1, unifiers.size());
    Unifier unifier = unifiers.get(0);
    // test filter allows a valid answer
    Relation friendship = instanceOf("friendship").asRelation();
    Thing person = instanceOf("person");
    addRolePlayer(friendship, "friend", person);
    Map<Variable, Concept> concepts = map(pair(Variable.anon(0), friendship), pair(Variable.name("x"), person), pair(Variable.label("friendship"), friendship.getType()), pair(Variable.label("friendship:friend"), friendship.getType().getRelates("friend")));
    List<ConceptMap> unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map(pair(Variable.name("rel"), friendship.getType())))).toList();
    assertEquals(2, unified.size());
    Set<Map<String, String>> expected = set(new HashMap<String, String>() {

        {
            put("$rel", "friendship");
            put("$role", "friendship:friend");
        }
    }, new HashMap<String, String>() {

        {
            put("$rel", "friendship");
            put("$role", "relation:role");
        }
    });
    Set<Map<String, String>> actual = new HashSet<>();
    iterate(unified).forEachRemaining(answer -> {
        actual.add(new HashMap<String, String>() {

            {
                put("$rel", answer.get("rel").asType().getLabel().name());
                put("$role", answer.get("role").asType().getLabel().scopedName());
            }
        });
    });
    assertEquals(expected, actual);
}

Example 10 with Rule

use of com.vaticle.typedb.core.logic.Rule in project grakn by graknlabs.

the class UnifyRelationConcludableTest method verifyUnificationSucceeds.

private void verifyUnificationSucceeds(String parent, Rule rule) {
    Unifier unifier = uniqueUnifier(parent, rule);
    List<ConceptMap> childAnswers = transaction.query().match(TypeQL.match(rule.getThenPreNormalised())).toList();
    List<ConceptMap> parentAnswers = transaction.query().match(TypeQL.match(TypeQL.parsePattern(parent))).toList();
    assertFalse(childAnswers.isEmpty());
    assertFalse(parentAnswers.isEmpty());
    List<ConceptMap> unifiedAnswers = iterate(childAnswers).flatMap(ans -> {
        Map<Variable, Concept> labelledTypes = addRequiredLabeledTypes(ans, unifier);
        Map<Variable, Concept> requiredRetrievableConcepts = addRequiredRetrievableConcepts(ans, unifier);
        labelledTypes.putAll(requiredRetrievableConcepts);
        // TODO if want to use with iids add instance requirements
        FunctionalIterator<ConceptMap> unified = unifier.unUnify(labelledTypes, new Unifier.Requirements.Instance(map())).map(u -> {
            Map<Variable.Retrievable, Concept> concepts = u.concepts().entrySet().stream().collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
            requiredRetrievableConcepts.forEach(concepts::remove);
            return new ConceptMap(concepts);
        });
        return unified;
    }).toList();
    assertFalse(unifiedAnswers.isEmpty());
    assertTrue(parentAnswers.containsAll(unifiedAnswers));
}