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

Example 16 with Relationship

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

the class RelationshipProxyTest method shouldPrintCypherEsqueRelationshipToString.

@Test
public void shouldPrintCypherEsqueRelationshipToString() throws Exception {
    // GIVEN
    Node start, end;
    RelationshipType type = RelationshipType.withName("NICE");
    Relationship relationship;
    try (Transaction tx = db.beginTx()) {
        // GIVEN
        start = db.createNode();
        end = db.createNode();
        relationship = start.createRelationshipTo(end, type);
        tx.success();
        // WHEN
        String toString = relationship.toString();
        // THEN
        assertEquals("(" + start.getId() + ")-[" + type + "," + relationship.getId() + "]->(" + end.getId() + ")", toString);
    }
}

Example 17 with Relationship

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

the class TestDenseNodeRelChainPositionIT method givenDenseNodeWhenAskForWrongDirectionThenIncorrectNrOfRelsReturned.

/*
     * Tests for a particular bug with dense nodes. It used to be that if a dense node had relationships
     * for only one direction, if a request for relationships of the other direction was made, no relationships
     * would be returned, ever.
     */
@Test
public void givenDenseNodeWhenAskForWrongDirectionThenIncorrectNrOfRelsReturned() throws Exception {
    // Given
    final int denseNodeThreshold = Integer.parseInt(GraphDatabaseSettings.dense_node_threshold.getDefaultValue()) + // We must be over the dense node threshold for the bug to manifest
    1;
    Node node1;
    try (Transaction tx = db.beginTx()) {
        node1 = db.createNode();
        Node node2 = db.createNode();
        for (int i = 0; i < denseNodeThreshold; i++) {
            node1.createRelationshipTo(node2, RelationshipType.withName("FOO"));
        }
        tx.success();
    }
    // When/Then
    try (Transaction ignored = db.beginTx()) {
        Node node1b = db.getNodeById(node1.getId());
        Iterable<Relationship> rels = node1b.getRelationships(Direction.INCOMING);
        assertEquals(0, Iterables.count(rels));
        Iterable<Relationship> rels2 = node1b.getRelationships(Direction.OUTGOING);
        assertEquals(denseNodeThreshold, Iterables.count(rels2));
    }
}

Example 18 with Relationship

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

the class TestExceptionTypeOnInvalidIds method getRelationshipById.

private void getRelationshipById(long index) {
    Relationship value = graphdb.getRelationshipById(index);
    fail(String.format("Returned Relationship [0x%x] for index 0x%x (int value: 0x%x)", value.getId(), index, (int) index));
}

Example 19 with Relationship

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

the class SubGraphExporter method appendRelationships.

private long appendRelationships(PrintWriter out) {
    long relationships = 0;
    for (Node node : graph.getNodes()) {
        for (Relationship rel : node.getRelationships(Direction.OUTGOING)) {
            appendRelationship(out, rel);
            relationships++;
        }
    }
    return relationships;
}

Example 20 with Relationship

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

the class DeleteRelationshipStressIT method setup.

@Before
public void setup() {
    for (int i = 0; i < 100; i++) {
        try (Transaction tx = db.beginTx()) {
            Node prev = null;
            for (int j = 0; j < 100; j++) {
                Node node = db.createNode(label("L"));
                if (prev != null) {
                    Relationship rel = prev.createRelationshipTo(node, DynamicRelationshipType.withName("T"));
                    rel.setProperty("prop", i + j);
                }
                prev = node;
            }
            tx.success();
        }
    }
}