Examples with GraphManager com.vaticle.typedb.core.graph.GraphManager used on opensource projects

Example 1 with GraphManager

use of com.vaticle.typedb.core.graph.GraphManager in project grakn by graknlabs.

the class GraphProcedure method producer.

@Override
public FunctionalProducer<VertexMap> producer(GraphManager graphMgr, Traversal.Parameters params, Set<Identifier.Variable.Retrievable> filter, int parallelisation) {
    if (LOG.isTraceEnabled()) {
        LOG.trace(params.toString());
        LOG.trace(this.toString());
    }
    assertWithinFilterBounds(filter);
    if (startVertex().id().isRetrievable() && filter.contains(startVertex().id().asVariable().asRetrievable())) {
        return async(startVertex().iterator(graphMgr, params).map(// TODO we can reduce the size of the distinct() set if the traversal engine doesn't overgenerate as much
        v -> new GraphIterator(graphMgr, v, this, params, filter).distinct()), parallelisation);
    } else {
        // TODO we can reduce the size of the distinct() set if the traversal engine doesn't overgenerate as much
        return async(startVertex().iterator(graphMgr, params).map(v -> new GraphIterator(graphMgr, v, this, params, filter)), parallelisation).distinct();
    }
}

Example 2 with GraphManager

use of com.vaticle.typedb.core.graph.GraphManager in project grakn by graknlabs.

the class RuleTest method rule_contains_indexes_allow_deleting_type_after_deleting_rule.

@Test
public void rule_contains_indexes_allow_deleting_type_after_deleting_rule() 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();
                GraphManager graphMgr = logicMgr.graph();
                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());
                assertIndexTypesContainRule(set(Label.of("person"), Label.of("spouse", "marriage"), Label.of("marriage"), Label.of("friend", "friendship"), Label.of("friendship")), marriageFriendsRule.getLabel(), graphMgr);
                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());
                assertIndexTypesContainRule(set(Label.of("person"), Label.of("spouse", "marriage"), Label.of("marriage"), Label.of("name")), marriageSameName.getLabel(), graphMgr);
                txn.commit();
            }
            // check the rule index is still established after commit
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.READ)) {
                Rule marriageFriendsRule = txn.logic().getRule("marriage-is-friendship");
                assertIndexTypesContainRule(set(Label.of("person"), Label.of("spouse", "marriage"), Label.of("marriage"), Label.of("friend", "friendship"), Label.of("friendship")), marriageFriendsRule.getLabel(), txn.logic().graph());
                Rule marriageSameName = txn.logic().getRule("marriage-same-name");
                assertIndexTypesContainRule(set(Label.of("person"), Label.of("spouse", "marriage"), Label.of("marriage"), Label.of("name")), marriageSameName.getLabel(), txn.logic().graph());
            }
            // deleting a relation type used in a rule should throw
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                ConceptManager conceptMgr = txn.concepts();
                RelationType friendship = conceptMgr.getRelationType("friendship");
                assertThrowsTypeDBException(friendship::delete, ErrorMessage.TypeWrite.TYPE_REFERENCED_IN_RULES.code());
                assertTrue(!txn.isOpen());
            }
            // deleting an attribute type used in a rule should throw
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                ConceptManager conceptMgr = txn.concepts();
                AttributeType name = conceptMgr.getAttributeType("name");
                assertThrowsTypeDBException(name::delete, ErrorMessage.TypeWrite.TYPE_REFERENCED_IN_RULES.code());
                assertTrue(!txn.isOpen());
            }
            // deleting a rule, then an attribute type used in the rule is allowed
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                ConceptManager conceptMgr = txn.concepts();
                AttributeType name = conceptMgr.getAttributeType("name");
                LogicManager logicMgr = txn.logic();
                Rule marriageSameName = logicMgr.getRule("marriage-same-name");
                marriageSameName.delete();
                assertNotThrows(name::delete);
                txn.commit();
            }
            // deleting a rule, then an entity type used in the rule is allowed
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.WRITE)) {
                ConceptManager conceptMgr = txn.concepts();
                RelationType person = conceptMgr.getRelationType("friendship");
                LogicManager logicMgr = txn.logic();
                Rule marriageIsFriendship = logicMgr.getRule("marriage-is-friendship");
                marriageIsFriendship.delete();
                assertNotThrows(person::delete);
                txn.commit();
            }
            // after all rules are deleted, no rules should exist in the index
            try (CoreTransaction txn = session.transaction(Arguments.Transaction.Type.READ)) {
                LogicManager logicMgr = txn.logic();
                GraphManager graphMgr = logicMgr.graph();
                // no types should be in the index
                graphMgr.schema().thingTypes().forEachRemaining(type -> {
                    assertFalse(graphMgr.schema().rules().references().get(graphMgr.schema().getType(type.properLabel())).hasNext());
                });
            }
        }
    }
}