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

Example 56 with Node

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

the class TestLoopRelationships method canAddLoopRelationship.

@Test
public void canAddLoopRelationship() {
    Node node = getGraphDb().createNode();
    node.createRelationshipTo(node, TEST);
    newTransaction();
    for (Direction dir : Direction.values()) {
        int count = 0;
        for (Relationship rel : node.getRelationships(dir)) {
            count++;
            assertEquals("start node", node, rel.getStartNode());
            assertEquals("end node", node, rel.getEndNode());
            assertEquals("other node", node, rel.getOtherNode(node));
        }
        assertEquals(dir.name() + " relationship count", 1, count);
    }
}

Example 57 with Node

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

the class TestLoopRelationships method getSingleRelationshipOnNodeWithOneLoopOnly.

@Test
public void getSingleRelationshipOnNodeWithOneLoopOnly() throws Exception {
    Node node = getGraphDb().createNode();
    Relationship singleRelationship = node.createRelationshipTo(node, TEST);
    assertEquals(singleRelationship, node.getSingleRelationship(TEST, Direction.OUTGOING));
    assertEquals(singleRelationship, node.getSingleRelationship(TEST, Direction.INCOMING));
    assertEquals(singleRelationship, node.getSingleRelationship(TEST, Direction.BOTH));
    commit();
    newTransaction();
    assertEquals(singleRelationship, node.getSingleRelationship(TEST, Direction.OUTGOING));
    assertEquals(singleRelationship, node.getSingleRelationship(TEST, Direction.INCOMING));
    assertEquals(singleRelationship, node.getSingleRelationship(TEST, Direction.BOTH));
    finish();
}

Example 58 with Node

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

the class TestLoopRelationships method cannotDeleteNodeWithLoopStillAttached.

@Test
public void cannotDeleteNodeWithLoopStillAttached() throws Exception {
    // Given
    GraphDatabaseService db = getGraphDb();
    Node node;
    try (Transaction tx = db.beginTx()) {
        node = db.createNode();
        node.createRelationshipTo(node, DynamicRelationshipType.withName("MAYOR_OF"));
        tx.success();
    }
    // And given a transaction deleting just the node
    Transaction tx = newTransaction();
    node.delete();
    tx.success();
    // Expect
    exception.expect(ConstraintViolationException.class);
    exception.expectMessage("Cannot delete node<" + node.getId() + ">, because it still has relationships. " + "To delete this node, you must first delete its relationships.");
    // When I commit
    tx.close();
}

Example 59 with Node

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

the class TestLoopRelationships method testAddAndRemoveLoopRelationshipAndOtherRelationships.

private void testAddAndRemoveLoopRelationshipAndOtherRelationships(int size) {
    for (boolean[] delete : permutations(size)) {
        for (int i = 0; i < size; i++) {
            Node root = getGraphDb().createNode();
            Relationship[] relationships = createRelationships(size, i, root);
            for (int j = 0; j < size; j++) {
                if (delete[j]) {
                    relationships[j].delete();
                    relationships[j] = null;
                }
                newTransaction();
            }
            verifyRelationships(String.format("loop on %s of %s, delete %s", i, size, Arrays.toString(delete)), root, i, relationships);
        }
    }
}

Example 60 with Node

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

the class TestNeo4j method testRandomPropertyName.

@Test
public void testRandomPropertyName() {
    Node node1 = getGraphDb().createNode();
    String key = "random_" + new Random(System.currentTimeMillis()).nextLong();
    node1.setProperty(key, "value");
    assertEquals("value", node1.getProperty(key));
    node1.delete();
}