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

Example 6 with Node

use of org.neo4j.graphdb.Node in project neo4j-clean-remote-db-addon by jexp.

the class DeleteDatabaseTest method createData.

private void createData(GraphDatabaseAPI db, int max) {
    Transaction tx = db.beginTx();
    try {
        final IndexManager indexManager = db.index();
        Node[] nodes = new Node[max];
        for (int i = 0; i < max; i++) {
            nodes[i] = db.createNode();
            final Index<Node> index = indexManager.forNodes("node_index_" + String.valueOf(i % 5));
            index.add(nodes[i], "ID", i);
        }
        Random random = new Random();
        for (int i = 0; i < max * 2; i++) {
            int from = random.nextInt(max);
            final int to = (from + 1 + random.nextInt(max - 1)) % max;
            final Relationship relationship = nodes[from].createRelationshipTo(nodes[to], DynamicRelationshipType.withName("TEST_" + i));
            final Index<Relationship> index = indexManager.forRelationships("rel_index_" + String.valueOf(i % 5));
            index.add(relationship, "ID", i);
        }
        tx.success();
    } finally {
        tx.finish();
    }
}

Example 7 with Node

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

the class TransactionIT method shouldReadYourOwnWrites.

@Test
public void shouldReadYourOwnWrites() throws Exception {
    try (Transaction tx = env.graph().beginTx()) {
        Node node = env.graph().createNode(Label.label("A"));
        node.setProperty("prop", "one");
        tx.success();
    }
    BinaryLatch latch = new BinaryLatch();
    long dbVersion = env.lastClosedTxId();
    Thread thread = new Thread() {

        @Override
        public void run() {
            try (BoltStateMachine machine = env.newMachine(new BoltConnectionDescriptor(new InetSocketAddress("<testClient>", 56789), new InetSocketAddress("<writeServer>", 7468)))) {
                machine.init(USER_AGENT, emptyMap(), null);
                latch.await();
                machine.run("MATCH (n:A) SET n.prop = 'two'", emptyMap(), nullResponseHandler());
                machine.pullAll(nullResponseHandler());
            } catch (BoltConnectionFatality connectionFatality) {
                throw new RuntimeException(connectionFatality);
            }
        }
    };
    thread.start();
    long dbVersionAfterWrite = dbVersion + 1;
    try (BoltStateMachine machine = env.newMachine(new BoltConnectionDescriptor(new InetSocketAddress("<testClient>", 56789), new InetSocketAddress("<readServer>", 7468)))) {
        BoltResponseRecorder recorder = new BoltResponseRecorder();
        machine.init(USER_AGENT, emptyMap(), null);
        latch.release();
        final String bookmark = "neo4j:bookmark:v1:tx" + Long.toString(dbVersionAfterWrite);
        machine.run("BEGIN", singletonMap("bookmark", bookmark), nullResponseHandler());
        machine.pullAll(recorder);
        machine.run("MATCH (n:A) RETURN n.prop", emptyMap(), nullResponseHandler());
        machine.pullAll(recorder);
        machine.run("COMMIT", emptyMap(), nullResponseHandler());
        machine.pullAll(recorder);
        assertThat(recorder.nextResponse(), succeededWithMetadata("bookmark", BOOKMARK_PATTERN));
        assertThat(recorder.nextResponse(), succeededWithRecord("two"));
        assertThat(recorder.nextResponse(), succeededWithMetadata("bookmark", BOOKMARK_PATTERN));
    }
    thread.join();
}

Example 8 with Node

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

the class ImportToolTest method shouldNotTrimStringsByDefault.

@Test
public void shouldNotTrimStringsByDefault() throws Exception {
    // GIVEN
    String name = "  This is a line with leading and trailing whitespaces   ";
    File data = data(":ID,name", "1,\"" + name + "\"");
    // WHEN
    importTool("--into", dbRule.getStoreDirAbsolutePath(), "--nodes", data.getAbsolutePath());
    // THEN
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    try (Transaction tx = db.beginTx()) {
        ResourceIterator<Node> allNodes = db.getAllNodes().iterator();
        Node node = Iterators.single(allNodes);
        allNodes.close();
        assertEquals(name, node.getProperty("name"));
        tx.success();
    }
}

Example 9 with Node

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

the class ImportToolTest method import4097Labels.

@Test
public void import4097Labels() throws Exception {
    // GIVEN
    File header = file(fileName("4097labels-header.csv"));
    try (PrintStream writer = new PrintStream(header)) {
        writer.println(":LABEL");
    }
    File data = file(fileName("4097labels.csv"));
    try (PrintStream writer = new PrintStream(data)) {
        // Need to have unique names in order to get unique ids for labels. Want 4096 unique label ids present.
        for (int i = 0; i < 4096; i++) {
            writer.println("SIMPLE" + i);
        }
        // Then insert one with 3 array entries which will get ids greater than 4096. These cannot be inlined
        // due 36 bits being divided into 3 parts of 12 bits each and 4097 > 2^12, thus these labels will be
        // need to be dynamic records.
        writer.println("FIRST 4096|SECOND 4096|");
    }
    // WHEN
    importTool("--into", dbRule.getStoreDirAbsolutePath(), "--delimiter", "TAB", "--array-delimiter", "|", "--nodes", header.getAbsolutePath() + MULTI_FILE_DELIMITER + data.getAbsolutePath());
    // THEN
    try (Transaction tx = dbRule.beginTx()) {
        long nodeCount = Iterables.count(dbRule.getAllNodes());
        assertEquals(4097, nodeCount);
        tx.success();
        ResourceIterator<Node> nodes = dbRule.findNodes(DynamicLabel.label("FIRST 4096"));
        assertEquals(1, Iterators.asList(nodes).size());
        nodes = dbRule.findNodes(DynamicLabel.label("SECOND 4096"));
        assertEquals(1, Iterators.asList(nodes).size());
    }
}

Example 10 with Node

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

the class ImportToolTest method shouldAcceptRawAsciiCharacterCodeAsQuoteConfiguration.

@Test
public void shouldAcceptRawAsciiCharacterCodeAsQuoteConfiguration() throws Exception {
    // GIVEN
    // not '1', just the character represented with code 1, which seems to be SOH
    char weirdDelimiter = 1;
    String name1 = weirdDelimiter + "Weird" + weirdDelimiter;
    String name2 = "Start " + weirdDelimiter + "middle thing" + weirdDelimiter + " end!";
    File data = data(":ID,name", "1," + name1, "2," + name2);
    // WHEN
    importTool("--into", dbRule.getStoreDirAbsolutePath(), "--nodes", data.getAbsolutePath(), "--quote", String.valueOf(weirdDelimiter));
    // THEN
    Set<String> names = asSet("Weird", name2);
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    try (Transaction tx = db.beginTx()) {
        for (Node node : db.getAllNodes()) {
            String name = (String) node.getProperty("name");
            assertTrue("Didn't expect node with name '" + name + "'", names.remove(name));
        }
        assertTrue(names.isEmpty());
        tx.success();
    }
}