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

Example 56 with GraphDatabaseService

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

the class TestBackup method addMoreData.

private DbRepresentation addMoreData(File path) {
    GraphDatabaseService db = startGraphDatabase(path, false);
    DbRepresentation representation;
    try (Transaction tx = db.beginTx()) {
        Node node = db.createNode();
        node.setProperty("backup", "Is great");
        db.createNode().createRelationshipTo(node, RelationshipType.withName("LOVES"));
        tx.success();
    } finally {
        representation = DbRepresentation.of(db);
        db.shutdown();
    }
    return representation;
}

Example 57 with GraphDatabaseService

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

the class CausalClusteringRolesIT method readReplicasShouldRefuseWrites.

@Test
public void readReplicasShouldRefuseWrites() throws Exception {
    // given
    Cluster cluster = clusterRule.startCluster();
    GraphDatabaseService db = cluster.findAnyReadReplica().database();
    Transaction tx = db.beginTx();
    // then
    exceptionMatcher.expect(WriteOperationsNotAllowedException.class);
    // when
    db.createNode();
    tx.success();
    tx.close();
}

Example 58 with GraphDatabaseService

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

the class ClusterTest method given4instanceClusterWhenMasterGoesDownThenElectNewMaster.

@Test
public void given4instanceClusterWhenMasterGoesDownThenElectNewMaster() throws Throwable {
    ClusterManager clusterManager = new ClusterManager.Builder(testDirectory.directory("4instances")).withCluster(ClusterManager.clusterOfSize(4)).build();
    try {
        clusterManager.start();
        ClusterManager.ManagedCluster cluster = clusterManager.getCluster();
        cluster.await(allSeesAllAsAvailable());
        logging.getLogger().info("STOPPING MASTER");
        cluster.shutdown(cluster.getMaster());
        logging.getLogger().info("STOPPED MASTER");
        cluster.await(ClusterManager.masterAvailable());
        GraphDatabaseService master = cluster.getMaster();
        logging.getLogger().info("CREATE NODE");
        try (Transaction tx = master.beginTx()) {
            master.createNode();
            logging.getLogger().info("CREATED NODE");
            tx.success();
        }
        logging.getLogger().info("STOPPING CLUSTER");
    } finally {
        clusterManager.safeShutdown();
    }
}

Example 59 with GraphDatabaseService

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

the class IdReuseTest method shouldReuseNodeIdsFromRolledBackTransaction.

@Test
public void shouldReuseNodeIdsFromRolledBackTransaction() throws Exception {
    // Given
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    try (Transaction tx = db.beginTx()) {
        db.createNode();
        tx.failure();
    }
    db = dbRule.restartDatabase();
    // When
    Node node;
    try (Transaction tx = db.beginTx()) {
        node = db.createNode();
        tx.success();
    }
    // Then
    assertThat(node.getId(), equalTo(0L));
}

Example 60 with GraphDatabaseService

use of org.neo4j.graphdb.GraphDatabaseService 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));
}