Examples with FunctionalIterator com.vaticle.typedb.core.common.iterator.FunctionalIterator used on opensource projects

Example 11 with FunctionalIterator

use of com.vaticle.typedb.core.common.iterator.FunctionalIterator in project grakn by graknlabs.

the class UnifyRelationConcludableTest method relation_more_players_than_rule_relation_fails_unify.

@Test
public void relation_more_players_than_rule_relation_fails_unify() {
    String relationQuery = "{ (part-time-employee: $r, part-time-employer: $p, restriction: $q) isa part-time-employment; }";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(relationQuery, logicMgr));
    Concludable.Relation queryConcludable = concludables.iterator().next().asRelation();
    Rule rule = createRule("one-employee-one-employer", "{ $x isa person; $y isa organisation; " + "$employee type employment:employee; $employer type employment:employer; }", "($employee: $x, $employer: $y) isa employment", logicMgr);
    FunctionalIterator<Unifier> unifier = queryConcludable.unify(rule.conclusion(), conceptMgr);
    Set<Map<String, Set<String>>> result = unifier.map(u -> getStringMapping(u.mapping())).toSet();
    Set<Map<String, Set<String>>> expected = Collections.emptySet();
    assertEquals(expected, result);
}

Example 12 with FunctionalIterator

use of com.vaticle.typedb.core.common.iterator.FunctionalIterator in project grakn by graknlabs.

the class UnifyRelationConcludableTest method relation_variable_role_unifies_many_to_many_rule_relation_roles.

// [multiple VARIABLE ROLE, many2many]
@Test
public void relation_variable_role_unifies_many_to_many_rule_relation_roles() {
    String conjunction = "{ ($role1: $p, $role1: $q, $role2: $q) isa employment; }";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(conjunction, logicMgr));
    Concludable.Relation queryConcludable = concludables.iterator().next().asRelation();
    Rule rule = createRule("two-people-are-employed-one-is-also-the-employer", "{ $x isa person; $y isa person; }", "(employee: $x, employer: $x, employee: $y) isa employment", logicMgr);
    FunctionalIterator<Unifier> unifier = queryConcludable.unify(rule.conclusion(), conceptMgr);
    Set<Map<String, Set<String>>> result = unifier.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", "$y"));
            put("$role1", set("$_employment:employee"));
            put("$role2", set("$_employment:employer"));
            put("$_0", set("$_0"));
        }
    }, new HashMap<String, Set<String>>() {

        {
            put("$p", set("$x"));
            put("$q", set("$x", "$y"));
            put("$role1", set("$_employment:employee", "$_employment:employer"));
            put("$role2", set("$_employment:employee"));
            put("$_0", set("$_0"));
        }
    }, new HashMap<String, Set<String>>() {

        {
            put("$p", set("$y"));
            put("$q", set("$x"));
            put("$role1", set("$_employment:employee", "$_employment:employer"));
            put("$role2", set("$_employment:employee"));
            put("$_0", set("$_0"));
        }
    }, new HashMap<String, Set<String>>() {

        {
            put("$p", set("$y"));
            put("$q", set("$x"));
            put("$role1", set("$_employment:employee"));
            put("$role2", set("$_employment:employer"));
            put("$_0", set("$_0"));
        }
    });
    assertEquals(expected, result);
}

Example 13 with FunctionalIterator

use of com.vaticle.typedb.core.common.iterator.FunctionalIterator in project grakn by graknlabs.

the class UnifyRelationConcludableTest method relation_variable_multiple_identical_unifiers.

// [REFLEXIVE rule, Fewer roleplayers in parent]
@Test
public void relation_variable_multiple_identical_unifiers() {
    String conjunction = "{ (employee: $p) isa employment; }";
    Set<Concludable> concludables = Concludable.create(resolvedConjunction(conjunction, logicMgr));
    Concludable.Relation queryConcludable = concludables.iterator().next().asRelation();
    Rule rule = createRule("the-same-person-is-employed-twice", "{ $x isa person; $y isa person; $employment type employment; $employee type employment:employee; }", "($employee: $x, $employee: $x) isa $employment", logicMgr);
    FunctionalIterator<Unifier> unifier = queryConcludable.unify(rule.conclusion(), conceptMgr);
    Set<Map<String, Set<String>>> result = unifier.map(u -> getStringMapping(u.mapping())).toSet();
    Set<Map<String, Set<String>>> expected = set(new HashMap<String, Set<String>>() {

        {
            put("$p", set("$x"));
            put("$_0", set("$_0"));
        }
    });
    assertEquals(expected, result);
}

Example 14 with FunctionalIterator

use of com.vaticle.typedb.core.common.iterator.FunctionalIterator in project grakn by graknlabs.

the class UnifyRelationConcludableTest method unify_relation_many_to_many.

// [many2many]
@Test
public void unify_relation_many_to_many() {
    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("three-people-are-employed", "{ $x isa person; $y isa person; $z isa person; }", "(employee: $x, employee: $y, employee: $z) isa employment", logicMgr);
    FunctionalIterator<Unifier> unifier = queryConcludable.unify(rule.conclusion(), conceptMgr);
    Set<Map<String, Set<String>>> result = unifier.map(u -> getStringMapping(u.mapping())).toSet();
    Set<Map<String, Set<String>>> expected = set(new HashMap<String, Set<String>>() {

        {
            put("$p", set("$x"));
            put("$q", set("$y"));
            put("$_0", set("$_0"));
        }
    }, new HashMap<String, Set<String>>() {

        {
            put("$p", set("$x"));
            put("$q", set("$z"));
            put("$_0", set("$_0"));
        }
    }, new HashMap<String, Set<String>>() {

        {
            put("$p", set("$y"));
            put("$q", set("$x"));
            put("$_0", set("$_0"));
        }
    }, new HashMap<String, Set<String>>() {

        {
            put("$p", set("$y"));
            put("$q", set("$z"));
            put("$_0", set("$_0"));
        }
    }, new HashMap<String, Set<String>>() {

        {
            put("$p", set("$z"));
            put("$q", set("$x"));
            put("$_0", set("$_0"));
        }
    }, new HashMap<String, Set<String>>() {

        {
            put("$p", set("$z"));
            put("$q", set("$y"));
            put("$_0", set("$_0"));
        }
    });
    assertEquals(expected, result);
}

Example 15 with FunctionalIterator

use of com.vaticle.typedb.core.common.iterator.FunctionalIterator in project grakn by graknlabs.

the class Unifier method cartesianUnrestrictedNamedTypes.

private static FunctionalIterator<ConceptMap> cartesianUnrestrictedNamedTypes(Map<Retrievable, Concept> initialConcepts, Requirements.Instance instanceRequirements) {
    Map<Retrievable, Concept> fixedConcepts = new HashMap<>();
    List<Variable.Name> namedTypeNames = new ArrayList<>();
    List<FunctionalIterator<Type>> namedTypeSupers = new ArrayList<>();
    initialConcepts.forEach((id, concept) -> {
        if (id.isName() && concept.isType() && !instanceRequirements.hasRestriction(id)) {
            namedTypeNames.add(id.asName());
            namedTypeSupers.add(concept.asType().getSupertypes().map(t -> t));
        } else
            fixedConcepts.put(id, concept);
    });
    if (namedTypeNames.isEmpty()) {
        return Iterators.single(new ConceptMap(fixedConcepts));
    } else {
        return Iterators.cartesian(namedTypeSupers).map(permutation -> {
            Map<Retrievable, Concept> concepts = new HashMap<>(fixedConcepts);
            for (int i = 0; i < permutation.size(); i++) {
                concepts.put(namedTypeNames.get(i), permutation.get(i));
            }
            return new ConceptMap(concepts);
        });
    }
}