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

Example 16 with Rule

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

the class UnifyHasConcludableTest method has_attribute_variable_unifies_rule_has_variable.

@Test
public void has_attribute_variable_unifies_rule_has_variable() {
    String conjunction = "{ $y has $b; }";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(conjunction, logicMgr));
    Concludable.Has queryConcludable = concludables.iterator().next().asHas();
    Rule rule = createRule("has-rule", "{ $x isa person; $a isa first-name; }", "$x has $a", logicMgr);
    List<Unifier> unifiers = queryConcludable.unify(rule.conclusion(), conceptMgr).toList();
    assertEquals(1, unifiers.size());
    Unifier unifier = unifiers.get(0);
    Map<String, Set<String>> result = getStringMapping(unifier.mapping());
    HashMap<String, Set<String>> expected = new HashMap<String, Set<String>>() {

        {
            put("$y", set("$x"));
            put("$b", set("$a"));
        }
    };
    assertEquals(expected, result);
    // test filter allows a valid answer
    Map<Identifier.Variable, Concept> concepts = map(pair(Identifier.Variable.name("x"), instanceOf("person")), pair(Identifier.Variable.name("a"), instanceOf("last-name", "john")));
    FunctionalIterator<ConceptMap> unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertTrue(unified.hasNext());
    assertEquals(2, unified.next().concepts().size());
    // test requirements
    assertEquals(0, unifier.requirements().types().size());
    assertEquals(2, unifier.requirements().isaExplicit().size());
    assertEquals(0, unifier.requirements().predicates().size());
}

Example 17 with Rule

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

the class UnifyHasConcludableTest method has_all_equivalent_vars_unifier.

@Test
public void has_all_equivalent_vars_unifier() {
    String conjunction = "{ $b has self-owning-attribute $b; }";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(conjunction, logicMgr));
    Concludable.Has queryConcludable = concludables.iterator().next().asHas();
    Rule rule = createRule("has-rule", "{ $a isa self-owning-attribute; }", "$a has $a", logicMgr);
    List<Unifier> unifiers = queryConcludable.unify(rule.conclusion(), conceptMgr).toList();
    assertEquals(1, unifiers.size());
    Unifier unifier = unifiers.get(0);
    Map<String, Set<String>> result = getStringMapping(unifier.mapping());
    Map<String, Set<String>> expected = new HashMap<String, Set<String>>() {

        {
            put("$b", set("$a"));
        }
    };
    assertEquals(expected, result);
    // test requirements
    assertEquals(0, unifier.requirements().types().size());
    assertEquals(1, unifier.requirements().isaExplicit().size());
    assertEquals(set(Label.of("self-owning-attribute")), unifier.requirements().isaExplicit().get(Identifier.Variable.name("b")));
    assertEquals(0, unifier.requirements().predicates().size());
}

Example 18 with Rule

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

the class UnifyHasConcludableTest method has_attribute_variable_unifies_rule_has_exact.

@Test
public void has_attribute_variable_unifies_rule_has_exact() {
    String conjunction = "{ $y has $a; }";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(conjunction, logicMgr));
    Concludable.Has queryConcludable = concludables.iterator().next().asHas();
    Rule rule = createRule("has-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);
    Map<String, Set<String>> result = getStringMapping(unifier.mapping());
    Map<String, Set<String>> expected = new HashMap<String, Set<String>>() {

        {
            put("$y", set("$x"));
            put("$a", set("$_0"));
        }
    };
    assertEquals(expected, result);
    // test unifier allows a valid answer
    Map<Identifier.Variable, Concept> concepts = map(pair(Identifier.Variable.name("x"), instanceOf("person")), pair(Identifier.Variable.anon(0), instanceOf("first-name", "john")));
    FunctionalIterator<ConceptMap> unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertTrue(unified.hasNext());
    assertEquals(2, unified.next().concepts().size());
    // test requirements
    assertEquals(0, unifier.requirements().types().size());
    assertEquals(2, unifier.requirements().isaExplicit().size());
    assertEquals(0, unifier.requirements().predicates().size());
}

Example 19 with Rule

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

the class UnifyHasConcludableTest method has_attribute_exact_unifies_rule_has_exact.

// TODO: create more tests when type inference is working to test unifier pruning
@Test
public void has_attribute_exact_unifies_rule_has_exact() {
    String conjunction = "{ $y has name 'john'; }";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(conjunction, logicMgr));
    Concludable.Has queryConcludable = concludables.iterator().next().asHas();
    Rule rule = createRule("has-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);
    Map<String, Set<String>> result = getStringMapping(unifier.mapping());
    Map<String, Set<String>> expected = new HashMap<String, Set<String>>() {

        {
            put("$y", set("$x"));
            put("$_0", set("$_0"));
        }
    };
    assertEquals(expected, result);
    // test requirements
    assertEquals(0, unifier.requirements().types().size());
    assertEquals(2, unifier.requirements().isaExplicit().size());
    assertEquals(set(Label.of("first-name"), Label.of("last-name")), unifier.requirements().isaExplicit().get(Identifier.Variable.anon(0)));
    assertEquals(1, unifier.requirements().predicates().size());
    // test forward unification can reject an invalid partial answer
    ConceptMap partialAnswer = new ConceptMap(map(pair(Identifier.Variable.anon(0), instanceOf("age"))));
    assertFalse(unifier.unify(partialAnswer).isPresent());
    // test filter allows a valid answer
    Map<Identifier.Variable, Concept> concepts = map(pair(Identifier.Variable.name("x"), instanceOf("person")), pair(Identifier.Variable.anon(0), instanceOf("first-name", "john")));
    FunctionalIterator<ConceptMap> unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertTrue(unified.hasNext());
    assertEquals(2, unified.next().concepts().size());
    // filter out invalid type
    concepts = map(pair(Identifier.Variable.name("x"), instanceOf("person")), pair(Identifier.Variable.anon(0), instanceOf("age")));
    unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertFalse(unified.hasNext());
    // filter out invalid value
    concepts = map(pair(Identifier.Variable.name("x"), instanceOf("person")), pair(Identifier.Variable.anon(0), instanceOf("first-name", "bob")));
    unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertFalse(unified.hasNext());
}

Example 20 with Rule

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

the class UnifyRelationConcludableTest method relation_distinct_roles_unifies_rule_relation_duplicate_roles.

// [reflexive child]
@Test
public void relation_distinct_roles_unifies_rule_relation_duplicate_roles() {
    String conjunction = "{ (employee: $p, employee: $q) isa employment; }";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(conjunction, logicMgr));
    Concludable.Relation queryConcludable = concludables.iterator().next().asRelation();
    Rule rule = createRule("a-person-is-employed-twice", "{ $x isa person; $employment type employment; $employee type employment:employee; }", "($employee: $x, $employee: $x) isa $employment", logicMgr);
    List<Unifier> unifiers = queryConcludable.unify(rule.conclusion(), conceptMgr).toList();
    Set<Map<String, Set<String>>> result = iterate(unifiers).map(u -> getStringMapping(u.mapping())).toSet();
    Set<Map<String, Set<String>>> expected = set(new HashMap<String, Set<String>>() {

        {
            put("$p", set("$x"));
            put("$q", set("$x"));
            put("$_0", set("$_0"));
        }
    });
    assertEquals(expected, result);
    Unifier unifier = unifiers.get(0);
    // test requirements
    assertEquals(2, unifier.requirements().types().size());
    assertEquals(roleHierarchy("employee", "employment"), unifier.requirements().types().get(Variable.label("employment:employee")));
    assertEquals(typeHierarchy("employment"), unifier.requirements().isaExplicit().get(Variable.anon(0)));
    assertEquals(3, unifier.requirements().isaExplicit().size());
    assertEquals(0, unifier.requirements().predicates().size());
    // test filter allows a valid answer
    Relation employment = instanceOf("employment").asRelation();
    Thing person = instanceOf("person");
    addRolePlayer(employment, "employee", person);
    addRolePlayer(employment, "employee", person);
    Map<Variable, Concept> concepts = map(pair(Variable.anon(0), employment), pair(Variable.name("x"), person), pair(Variable.name("employment"), employment.getType()), pair(Variable.name("employee"), employment.getType().getRelates("employee")));
    FunctionalIterator<ConceptMap> unified = unifier.unUnify(concepts, new Unifier.Requirements.Instance(map()));
    assertTrue(unified.hasNext());
    ConceptMap unifiedAnswer = unified.first().get();
    assertEquals(3, unifiedAnswer.concepts().size());
    assertEquals(person, unifiedAnswer.get("p"));
    assertEquals(person, unifiedAnswer.get("q"));
    assertEquals(employment, unifiedAnswer.get(Variable.anon(0)));
}