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

Example 16 with GraphDatabaseService

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

the class ManyMergesStressTest method shouldWorkFine.

@Test
public void shouldWorkFine() throws Throwable {
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    GraphDatabaseQueryService graph = new GraphDatabaseCypherService(db);
    Label person = Label.label("Person");
    try (Transaction tx = db.beginTx()) {
        // THIS USED TO CAUSE OUT OF FILE HANDLES
        // (maybe look at:  http://stackoverflow.com/questions/6210348/too-many-open-files-error-on-lucene)
        db.schema().indexFor(person).on("id").create();
        // THIS SHOULD ALSO WORK
        db.schema().constraintFor(person).assertPropertyIsUnique("id").create();
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        db.schema().indexFor(person).on("name").create();
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        db.schema().awaitIndexesOnline(1, TimeUnit.MINUTES);
        tx.success();
    }
    for (int count = 0; count < TRIES; count++) {
        Pair<String, String> stringPair = getRandomName();
        String ident = stringPair.first();
        String name = stringPair.other();
        String id = Long.toString(Math.abs(random.nextLong()));
        String query = format("MERGE (%s:Person {id: %s}) ON CREATE SET %s.name = \"%s\";", ident, id, ident, name);
        try (InternalTransaction tx = graph.beginTransaction(KernelTransaction.Type.implicit, SecurityContext.AUTH_DISABLED)) {
            Result result = db.execute(query);
            result.close();
            tx.success();
        }
    }
}

Example 17 with GraphDatabaseService

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

the class CypherLoggingTest method shouldNotLogQueries.

@Test
public void shouldNotLogQueries() throws Exception {
    // given
    AssertableLogProvider logProvider = new AssertableLogProvider();
    GraphDatabaseService database = new TestGraphDatabaseFactory().setUserLogProvider(logProvider).newImpermanentDatabase();
    // when
    database.execute("CREATE (n:Reference) CREATE (foo {test:'me'}) RETURN n");
    database.execute("MATCH (n) RETURN n");
    // then
    inLog(org.neo4j.cypher.internal.ExecutionEngine.class);
    logProvider.assertNoLoggingOccurred();
}

Example 18 with GraphDatabaseService

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

the class CheckPointerIntegrationTest method shouldCheckPointBasedOnTime.

@Test
public void shouldCheckPointBasedOnTime() throws Throwable {
    // given
    long millis = 200;
    GraphDatabaseService db = builder.setConfig(GraphDatabaseSettings.check_point_interval_time, millis + "ms").setConfig(GraphDatabaseSettings.check_point_interval_tx, "10000").setConfig(GraphDatabaseSettings.logical_log_rotation_threshold, "1g").newGraphDatabase();
    // when
    try (Transaction tx = db.beginTx()) {
        db.createNode();
        tx.success();
    }
    // The scheduled job checking whether or not checkpoints are needed runs more frequently
    // now that we've set the time interval so low, so we can simply wait for it here
    long endTime = currentTimeMillis() + SECONDS.toMillis(30);
    while (!checkPointInTxLog(db)) {
        Thread.sleep(millis);
        assertTrue("Took too long to produce a checkpoint", currentTimeMillis() < endTime);
    }
    db.shutdown();
    // then - 2 check points have been written in the log
    List<CheckPoint> checkPoints = new CheckPointCollector(storeDir, fs).find(0);
    assertTrue("Expected at least two (at least one for time interval and one for shutdown), was " + checkPoints.toString(), checkPoints.size() >= 2);
}

Example 19 with GraphDatabaseService

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

the class CheckPointerIntegrationTest method shouldCheckPointBasedOnTxCount.

@Test
public void shouldCheckPointBasedOnTxCount() throws Throwable {
    // given
    GraphDatabaseService db = builder.setConfig(GraphDatabaseSettings.check_point_interval_time, "300m").setConfig(GraphDatabaseSettings.check_point_interval_tx, "1").setConfig(GraphDatabaseSettings.logical_log_rotation_threshold, "1g").newGraphDatabase();
    // when
    try (Transaction tx = db.beginTx()) {
        db.createNode();
        tx.success();
    }
    // Instead of waiting 10s for the background job to do this check, perform the check right here
    triggerCheckPointAttempt(db);
    assertTrue(checkPointInTxLog(db));
    db.shutdown();
    // then - 2 check points have been written in the log
    List<CheckPoint> checkPoints = new CheckPointCollector(storeDir, fs).find(0);
    assertEquals(2, checkPoints.size());
}

Example 20 with GraphDatabaseService

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

the class CheckPointerIntegrationTest method shouldNotCheckPointWhenThereAreNoCommits.

@Test
public void shouldNotCheckPointWhenThereAreNoCommits() throws Throwable {
    // given
    GraphDatabaseService db = builder.setConfig(GraphDatabaseSettings.check_point_interval_time, "1s").setConfig(GraphDatabaseSettings.check_point_interval_tx, "10000").setConfig(GraphDatabaseSettings.logical_log_rotation_threshold, "1g").newGraphDatabase();
    // when
    // nothing happens
    triggerCheckPointAttempt(db);
    assertFalse(checkPointInTxLog(db));
    db.shutdown();
    // then - 1 check point has been written in the log
    List<CheckPoint> checkPoints = new CheckPointCollector(storeDir, fs).find(0);
    assertEquals(1, checkPoints.size());
}