Examples with Node org.neo4j.graphdb.Node used on opensource projects

Example 21 with Node

use of org.neo4j.graphdb.Node in project neo4j by neo4j.

the class BidirectionalTraversalBranchPath method gatherNodes.

private Iterable<Node> gatherNodes(TraversalBranch first, TraversalBranch then) {
    // TODO Don't loop through them all up front
    LinkedList<Node> nodes = new LinkedList<>();
    TraversalBranch branch = first;
    while (branch.length() > 0) {
        nodes.addFirst(branch.endNode());
        branch = branch.parent();
    }
    if (cachedStartNode == null && first == start && branch.length() >= 0) {
        cachedStartNode = branch.endNode();
    }
    nodes.addFirst(branch.endNode());
    branch = then.parent();
    if (branch != null) {
        while (branch.length() > 0) {
            nodes.add(branch.endNode());
            branch = branch.parent();
        }
        if (branch.length() >= 0) {
            nodes.add(branch.endNode());
        }
    }
    if (cachedStartNode == null && then == start && branch.length() >= 0) {
        cachedStartNode = branch.endNode();
    }
    return nodes;
}

Example 22 with Node

use of org.neo4j.graphdb.Node in project neo4j by neo4j.

the class CreateAndLoadDenseNodeIT method loadSpecificTypeDirectionRelationshipsFast.

@Test
public void loadSpecificTypeDirectionRelationshipsFast() throws Exception {
    // GIVEN
    Node node;
    try (Transaction tx = db.beginTx()) {
        node = db.getNodeById(0);
        tx.success();
    }
    // WHEN
    loadRelationships(node, MyRelTypes.TEST, INCOMING);
    loadRelationships(node, MyRelTypes.TEST2, OUTGOING);
    loadRelationships(node, MyRelTypes.TEST_TRAVERSAL, INCOMING);
}

Example 23 with Node

use of org.neo4j.graphdb.Node in project neo4j by neo4j.

the class CreateAndLoadDenseNodeIT method createRelationships.

private void createRelationships(BatchTransaction tx, Node node, RelationshipType type, Direction direction, int count) {
    for (int i = 0; i < count; i++) {
        Node firstNode = direction == OUTGOING || direction == BOTH ? node : db.createNode();
        Node otherNode = direction == INCOMING || direction == BOTH ? node : db.createNode();
        firstNode.createRelationshipTo(otherNode, type);
        tx.increment();
    }
}

Example 24 with Node

use of org.neo4j.graphdb.Node in project neo4j by neo4j.

the class TraversalBranchImpl method next.

@Override
public TraversalBranch next(PathExpander expander, TraversalContext context) {
    if (relationships == null) {
        expandRelationships(expander);
    }
    while (relationships.hasNext()) {
        Relationship relationship = relationships.next();
        if (relationship.equals(howIGotHere)) {
            context.unnecessaryRelationshipTraversed();
            continue;
        }
        expandedCount++;
        Node node = relationship.getOtherNode(source);
        // TODO maybe an unnecessary instantiation. Instead pass in this+node+relationship to uniqueness check
        TraversalBranch next = newNextBranch(node, relationship);
        if (context.isUnique(next)) {
            context.relationshipTraversed();
            next.initialize(expander, context);
            return next;
        } else {
            context.unnecessaryRelationshipTraversed();
        }
    }
    // Just to help GC
    relationships = PRUNED_ITERATOR;
    return null;
}

Example 25 with Node

use of org.neo4j.graphdb.Node in project neo4j by neo4j.

the class TestReferenceDangling method ensurePropertyIsCachedLazyProperty.

private long ensurePropertyIsCachedLazyProperty(GraphDatabaseAPI slave, String key) {
    long nId;
    try (Transaction tx = slave.beginTx()) {
        Node n = slave.createNode();
        nId = n.getId();
        n.setProperty(key, new long[] { -1, 2, 2, 3, 4, 5, 5 });
        tx.success();
    }
    try (Transaction tx = slave.beginTx()) {
        slave.getNodeById(nId).hasProperty(key);
        tx.success();
    }
    return nId;
}