Examples with Uniqueness org.neo4j.graphdb.traversal.Uniqueness used on opensource projects

Example 1 with Uniqueness

use of org.neo4j.graphdb.traversal.Uniqueness in project neo4j by neo4j.

the class TestBidirectionalTraversal method mirroredTraversalReversesInitialState.

@Test
void mirroredTraversalReversesInitialState() {
    /*
         * (a)-->(b)-->(c)-->(d)
         */
    createGraph("a TO b", "b TO c", "c TO d");
    try (Transaction transaction = getGraphDb().beginTx()) {
        BranchCollisionPolicy collisionPolicy = (evaluator, pathPredicate) -> new StandardBranchCollisionDetector(null, null) {

            @Override
            protected boolean includePath(Path path, TraversalBranch startPath, TraversalBranch endPath) {
                assertEquals(0, startPath.state());
                assertEquals(10, endPath.state());
                return true;
            }
        };
        Iterables.count(transaction.bidirectionalTraversalDescription().mirroredSides(transaction.traversalDescription().uniqueness(NODE_PATH).expand(PathExpanders.forType(to), new InitialBranchState.State<>(0, 10))).collisionPolicy(collisionPolicy).traverse(getNodeWithName(transaction, "a"), getNodeWithName(transaction, "d")));
    }
}

Example 2 with Uniqueness

use of org.neo4j.graphdb.traversal.Uniqueness in project neo4j by neo4j.

the class TraversalDescriptionBuilder method describeUniqueness.

private TraversalDescription describeUniqueness(TraversalDescription result, Map<String, Object> description) {
    Object uniquenessDescription = description.get("uniqueness");
    if (uniquenessDescription != null) {
        String name = null;
        Object value = null;
        if (uniquenessDescription instanceof Map) {
            Map map = (Map) uniquenessDescription;
            name = (String) map.get("name");
            value = map.get("value");
        } else {
            name = (String) uniquenessDescription;
        }
        Uniqueness uniqueness = stringToEnum(enumifyName(name), Uniqueness.class, true);
        result = value == null ? result.uniqueness(uniqueness) : result.uniqueness(uniqueness, value);
    }
    return result;
}