Examples with CoreTransaction com.vaticle.typedb.core.database.CoreTransaction used on opensource projects

Example 1 with CoreTransaction

use of com.vaticle.typedb.core.database.CoreTransaction in project grakn by graknlabs.

the class RocksIteratorTest method attributesRetrievedAscending.

@Test
public void attributesRetrievedAscending() {
    List<String> strings = new ArrayList<>();
    for (int i = 0; i < 10_000; i++) {
        strings.add(UUID.randomUUID().toString());
    }
    try (TypeDB.Transaction transaction = session.transaction(WRITE)) {
        AttributeType.String stringValueType = transaction.concepts().getAttributeType("string-value").asString();
        for (String string : strings) {
            stringValueType.put(string);
        }
        transaction.commit();
    }
    // test ascending order
    strings.sort(Comparator.naturalOrder());
    try (CoreTransaction transaction = session.transaction(READ)) {
        Storage.Data storage = transaction.graphMgr.data().storage();
        AttributeType.String stringValueType = transaction.concepts().getAttributeType("string-value").asString();
        VertexIID.Type iid = ((AttributeTypeImpl) stringValueType).vertex.iid();
        Storage.Key.Prefix<VertexIID.Thing> iteratePrefix = VertexIID.Thing.Attribute.String.prefix(iid);
        List<String> values = storage.iterate(iteratePrefix, ASC).map(kv -> kv.key().asAttribute().asString().value()).toList();
        assertEquals(strings, values);
    }
    // test descending order
    strings.sort(Comparator.reverseOrder());
    try (CoreTransaction transaction = session.transaction(READ)) {
        Storage.Data storage = transaction.graphMgr.data().storage();
        AttributeType.String stringValueType = transaction.concepts().getAttributeType("string-value").asString();
        VertexIID.Type iid = ((AttributeTypeImpl) stringValueType).vertex.iid();
        Storage.Key.Prefix<VertexIID.Thing> iteratePrefix = VertexIID.Thing.Attribute.String.prefix(iid);
        List<String> values = storage.iterate(iteratePrefix, DESC).map(kv -> kv.key().asAttribute().asString().value()).toList();
        assertEquals(strings, values);
    }
}

Example 2 with CoreTransaction

use of com.vaticle.typedb.core.database.CoreTransaction in project grakn by graknlabs.

the class RuleTest method rule_contains_indexes_prevent_undefining_contained_types.

@Test
public void rule_contains_indexes_prevent_undefining_contained_types() throws IOException {
    Util.resetDirectory(dataDir);
    try (CoreDatabaseManager databaseMgr = CoreDatabaseManager.open(options)) {
        databaseMgr.create(database);
        try (CoreSession session = databaseMgr.session(database, Arguments.Session.Type.SCHEMA)) {
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                ConceptManager conceptMgr = txn.concepts();
                LogicManager logicMgr = txn.logic();
                EntityType person = conceptMgr.putEntityType("person");
                RelationType friendship = conceptMgr.putRelationType("friendship");
                friendship.setRelates("friend");
                RelationType marriage = conceptMgr.putRelationType("marriage");
                AttributeType name = conceptMgr.putAttributeType("name", AttributeType.ValueType.STRING);
                marriage.setRelates("spouse");
                person.setPlays(friendship.getRelates("friend"));
                person.setPlays(marriage.getRelates("spouse"));
                person.setOwns(name);
                Rule marriageFriendsRule = logicMgr.putRule("marriage-is-friendship", TypeQL.parsePattern("{ $x isa person; $y isa person; (spouse: $x, spouse: $y) isa marriage; }").asConjunction(), TypeQL.parseVariable("(friend: $x, friend: $y) isa friendship").asThing());
                Conjunction marriageFriendsThen = marriageFriendsRule.then();
                Variable marriageFriendsRelation = getVariable(marriageFriendsThen.variables(), Identifier.Variable.anon(0));
                assertEquals(set(Label.of("friendship")), marriageFriendsRelation.inferredTypes());
                Rule marriageSameName = logicMgr.putRule("marriage-same-name", TypeQL.parsePattern("{ $x isa person, has name $a; $y isa person; (spouse:$x, spouse: $y) isa marriage; }").asConjunction(), TypeQL.parseVariable("$y has $a").asThing());
                Conjunction sameName = marriageSameName.then();
                Variable nameAttr = getVariable(sameName.variables(), Identifier.Variable.name("a"));
                assertEquals(set(Label.of("name")), nameAttr.inferredTypes());
                txn.commit();
            }
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                ConceptManager conceptMgr = txn.concepts();
                EntityType person = conceptMgr.getEntityType("person");
                assertThrowsTypeDBException(person::delete, ErrorMessage.TypeWrite.TYPE_REFERENCED_IN_RULES.code());
            }
        }
    }
}

Example 3 with CoreTransaction

use of com.vaticle.typedb.core.database.CoreTransaction in project grakn by graknlabs.

the class RuleTest method rule_has_explicit_materialises_when_missing.

@Test
public void rule_has_explicit_materialises_when_missing() throws IOException {
    Util.resetDirectory(dataDir);
    try (CoreDatabaseManager databaseMgr = CoreDatabaseManager.open(options)) {
        databaseMgr.create(database);
        try (CoreSession session = databaseMgr.session(database, Arguments.Session.Type.SCHEMA)) {
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                ConceptManager conceptMgr = txn.concepts();
                EntityType milk = conceptMgr.putEntityType("milk");
                AttributeType ageInDays = conceptMgr.putAttributeType("age-in-days", AttributeType.ValueType.LONG);
                AttributeType isStillGood = conceptMgr.putAttributeType("is-still-good", AttributeType.ValueType.BOOLEAN);
                milk.setOwns(ageInDays);
                milk.setOwns(isStillGood);
                txn.logic().putRule("old-milk-is-not-good", TypeQL.parsePattern("{ $x isa milk, has age-in-days $a; $a >= 10; }").asConjunction(), TypeQL.parseVariable("$x has is-still-good false").asThing());
                txn.commit();
            }
        }
        try (CoreSession session = databaseMgr.session(database, Arguments.Session.Type.DATA)) {
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                ConceptManager conceptMgr = txn.concepts();
                EntityType milk = conceptMgr.getEntityType("milk");
                AttributeType ageInDays = conceptMgr.getAttributeType("age-in-days");
                Entity milkInst = milk.create();
                milkInst.setHas(ageInDays.asLong().put(20L));
                Rule rule = txn.logic().getRule("old-milk-is-not-good");
                ConceptMap whenAnswer = new ConceptMap(map(pair(Identifier.Variable.name("x"), milkInst)));
                List<Map<Identifier.Variable, Concept>> materialisations = rule.conclusion().materialise(whenAnswer, txn.traversal(), conceptMgr).toList();
                assertEquals(1, materialisations.size());
                assertEquals(3, materialisations.get(0).size());
                AttributeType isStillGood = conceptMgr.getAttributeType("is-still-good");
                List<? extends Attribute> isStillGoodOwned = milkInst.getHas(isStillGood).toList();
                assertEquals(1, isStillGoodOwned.size());
                assertEquals(isStillGood.asBoolean().getInstances().first().get(), isStillGoodOwned.get(0));
            }
        }
    }
}

Example 4 with CoreTransaction

use of com.vaticle.typedb.core.database.CoreTransaction in project grakn by graknlabs.

the class RuleTest method rule_with_negated_cycle_throws_an_error.

@Test
public void rule_with_negated_cycle_throws_an_error() throws IOException {
    Util.resetDirectory(dataDir);
    try (CoreDatabaseManager databaseMgr = CoreDatabaseManager.open(options)) {
        databaseMgr.create(database);
        try (CoreSession session = databaseMgr.session(database, Arguments.Session.Type.SCHEMA)) {
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                txn.query().define(TypeQL.parseQuery("define " + "person sub entity, owns is-starting-school, owns grade;" + "is-starting-school sub attribute, value boolean;" + "grade sub attribute, value long;" + "rule person-starting-school: when {" + "  $x isa person;" + "  not { $x has is-starting-school true; };" + "} then {" + "  $x has grade 1;" + "};" + "" + "rule person-with-grade-is-in-school: when {" + "  $x isa person, has grade 1;" + "} then {" + "  $x has is-starting-school true;" + "};").asDefine());
                assertThrowsTypeDBException(txn::commit, CONTRADICTORY_RULE_CYCLE.code());
            }
        }
    }
}

Example 5 with CoreTransaction

use of com.vaticle.typedb.core.database.CoreTransaction in project grakn by graknlabs.

the class RuleTest method rule_then_that_cannot_be_satisfied_throws_an_error.

@Test
public void rule_then_that_cannot_be_satisfied_throws_an_error() throws IOException {
    Util.resetDirectory(dataDir);
    try (CoreDatabaseManager databaseMgr = CoreDatabaseManager.open(options)) {
        databaseMgr.create(database);
        try (CoreSession session = databaseMgr.session(database, Arguments.Session.Type.SCHEMA)) {
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                final ConceptManager conceptMgr = txn.concepts();
                final EntityType person = conceptMgr.putEntityType("person");
                final EntityType dog = conceptMgr.putEntityType("dog");
                final AttributeType name = conceptMgr.putAttributeType("name", AttributeType.ValueType.STRING);
                person.setOwns(name);
                ThingVariable<?> then = TypeQL.parseVariable("$x has name 'fido'").asThing();
                assertThrowsTypeDBException(() -> txn.logic().putRule("dogs-are-named-fido", TypeQL.parsePattern("{$x isa dog;}").asConjunction(), then), RULE_THEN_CANNOT_BE_SATISFIED.code());
            }
        }
    }
}