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

Example 71 with GraphDatabaseService

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

the class NodeCountsTest method shouldIncludeNumberOfNodesAddedInTransaction.

@Test
public void shouldIncludeNumberOfNodesAddedInTransaction() throws Exception {
    // given
    GraphDatabaseService graphDb = db.getGraphDatabaseAPI();
    try (Transaction tx = graphDb.beginTx()) {
        graphDb.createNode();
        graphDb.createNode();
        tx.success();
    }
    long before = numberOfNodes();
    try (Transaction tx = graphDb.beginTx()) {
        // when
        graphDb.createNode();
        long nodeCount = countsForNode();
        // then
        assertEquals(before + 1, nodeCount);
        tx.success();
    }
}

Example 72 with GraphDatabaseService

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

the class IdGeneratorRebuildFailureEmulationTest method verifyAndDispose.

@After
public void verifyAndDispose() throws Exception {
    GraphDatabaseService graphdb = null;
    try {
        graphdb = new Database(storeDir);
        verifyData(graphdb);
    } finally {
        if (graphdb != null) {
            graphdb.shutdown();
        }
        if (fs != null) {
            fs.disposeAndAssertNoOpenFiles();
        }
        fs = null;
    }
}

Example 73 with GraphDatabaseService

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

the class IdGeneratorRebuildFailureEmulationTest method initialize.

@Before
public void initialize() {
    fs = new FileSystem();
    GraphDatabaseService graphdb = new Database(storeDir);
    createInitialData(graphdb);
    graphdb.shutdown();
    Map<String, String> params = new HashMap<>();
    params.put(GraphDatabaseSettings.rebuild_idgenerators_fast.name(), Settings.FALSE);
    Config config = Config.embeddedDefaults(params);
    factory = new StoreFactory(storeDir, config, new DefaultIdGeneratorFactory(fs), pageCacheRule.getPageCache(fs), fs, NullLogProvider.getInstance());
}

Example 74 with GraphDatabaseService

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

the class RelationshipCountsTest method shouldNotCountRelationshipsDeletedInOtherTransaction.

@Test
public void shouldNotCountRelationshipsDeletedInOtherTransaction() throws Exception {
    // given
    GraphDatabaseService graphDb = db.getGraphDatabaseAPI();
    final Relationship rel;
    try (Transaction tx = graphDb.beginTx()) {
        Node node = graphDb.createNode();
        node.createRelationshipTo(graphDb.createNode(), withName("KNOWS"));
        rel = node.createRelationshipTo(graphDb.createNode(), withName("KNOWS"));
        node.createRelationshipTo(graphDb.createNode(), withName("KNOWS"));
        tx.success();
    }
    final Barrier.Control barrier = new Barrier.Control();
    long before = numberOfRelationships();
    Future<Long> tx = threading.execute(new NamedFunction<GraphDatabaseService, Long>("create-relationships") {

        @Override
        public Long apply(GraphDatabaseService graphDb) {
            try (Transaction tx = graphDb.beginTx()) {
                rel.delete();
                long whatThisThreadSees = countsForRelationship(null, null, null);
                barrier.reached();
                tx.success();
                return whatThisThreadSees;
            }
        }
    }, graphDb);
    barrier.await();
    // when
    long during = numberOfRelationships();
    barrier.release();
    long whatOtherThreadSees = tx.get();
    long after = numberOfRelationships();
    // then
    assertEquals(3, before);
    assertEquals(3, during);
    assertEquals(2, after);
    assertEquals(after, whatOtherThreadSees);
}

Example 75 with GraphDatabaseService

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

the class RelationshipCountsTest method shouldCountRelationshipsByType.

@Test
public void shouldCountRelationshipsByType() throws Exception {
    // given
    final GraphDatabaseService graphDb = db.getGraphDatabaseAPI();
    try (Transaction tx = graphDb.beginTx()) {
        graphDb.createNode().createRelationshipTo(graphDb.createNode(), withName("FOO"));
        graphDb.createNode().createRelationshipTo(graphDb.createNode(), withName("FOO"));
        graphDb.createNode().createRelationshipTo(graphDb.createNode(), withName("BAR"));
        graphDb.createNode().createRelationshipTo(graphDb.createNode(), withName("BAR"));
        graphDb.createNode().createRelationshipTo(graphDb.createNode(), withName("BAR"));
        graphDb.createNode().createRelationshipTo(graphDb.createNode(), withName("BAZ"));
        tx.success();
    }
    // when
    long total = numberOfRelationships();
    long foo = numberOfRelationships(withName("FOO"));
    long bar = numberOfRelationships(withName("BAR"));
    long baz = numberOfRelationships(withName("BAZ"));
    long qux = numberOfRelationships(withName("QUX"));
    // then
    assertEquals(2, foo);
    assertEquals(3, bar);
    assertEquals(1, baz);
    assertEquals(0, qux);
    assertEquals(6, total);
}