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

Example 86 with Relationship

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

the class GraphDbHelper method getIndexedRelationships.

public Collection<Long> getIndexedRelationships(String indexName, String key, Object value) {
    try (Transaction tx = database.getGraph().beginTransaction(implicit, AnonymousContext.write())) {
        Collection<Long> result = new ArrayList<>();
        for (Relationship relationship : database.getGraph().index().forRelationships(indexName).get(key, value)) {
            result.add(relationship.getId());
        }
        tx.success();
        return result;
    }
}

Example 87 with Relationship

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

the class GraphDbHelper method addRelationshipToIndex.

public void addRelationshipToIndex(String indexName, String key, String value, long relationshipId) {
    try (Transaction tx = database.getGraph().beginTransaction(implicit, AUTH_DISABLED)) {
        Index<Relationship> index = database.getGraph().index().forRelationships(indexName);
        index.add(database.getGraph().getRelationshipById(relationshipId), key, value);
        tx.success();
    }
}

Example 88 with Relationship

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

the class IncrementalBackupTests method createInitialDataSet.

private DbRepresentation createInitialDataSet(File path) {
    db = startGraphDatabase(path);
    try (Transaction tx = db.beginTx()) {
        db.createNode().setProperty("name", "Goofy");
        Node donald = db.createNode();
        donald.setProperty("name", "Donald");
        Node daisy = db.createNode();
        daisy.setProperty("name", "Daisy");
        Relationship knows = donald.createRelationshipTo(daisy, RelationshipType.withName("LOVES"));
        knows.setProperty("since", 1940);
        tx.success();
    }
    DbRepresentation result = DbRepresentation.of(db);
    db.shutdown();
    return result;
}

Example 89 with Relationship

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

the class IdReuseTest method shouldReuseRelationshipIdsFromRolledBackTransaction.

@Test
public void shouldReuseRelationshipIdsFromRolledBackTransaction() throws Exception {
    // Given
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    Node node1, node2;
    try (Transaction tx = db.beginTx()) {
        node1 = db.createNode();
        node2 = db.createNode();
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        node1.createRelationshipTo(node2, RelationshipType.withName("LIKE"));
        tx.failure();
    }
    db = dbRule.restartDatabase();
    // When
    Relationship relationship;
    try (Transaction tx = db.beginTx()) {
        node1 = db.getNodeById(node1.getId());
        node2 = db.getNodeById(node2.getId());
        relationship = node1.createRelationshipTo(node2, RelationshipType.withName("LIKE"));
        tx.success();
    }
    // Then
    assertThat(relationship.getId(), equalTo(0L));
}

Example 90 with Relationship

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

the class IdReuseTest method relationshipIdReusableOnlyAfterTransactionFinish.

@Test
public void relationshipIdReusableOnlyAfterTransactionFinish() {
    Label testLabel = Label.label("testLabel");
    long relationshipId = createRelationship(testLabel);
    final IdController idMaintenanceController = getIdMaintenanceController();
    try (Transaction transaction = dbRule.beginTx();
        ResourceIterator<Node> nodes = dbRule.findNodes(testLabel)) {
        List<Node> nodeList = Iterators.asList(nodes);
        for (Node node : nodeList) {
            Iterable<Relationship> relationships = node.getRelationships(TestRelationshipType.MARKER);
            for (Relationship relationship : relationships) {
                relationship.delete();
            }
        }
        idMaintenanceController.maintenance();
        Node node1 = dbRule.createNode(testLabel);
        Node node2 = dbRule.createNode(testLabel);
        Relationship relationshipTo = node1.createRelationshipTo(node2, TestRelationshipType.MARKER);
        assertNotEquals("Relatioships should have different ids.", relationshipId, relationshipTo.getId());
        transaction.success();
    }
}