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

Example 1 with Label

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

the class ImportToolTest method shouldSkipDuplicateNodesIfToldTo.

@Test
public void shouldSkipDuplicateNodesIfToldTo() throws Exception {
    // GIVEN
    List<String> nodeIds = asList("a", "b", "c", "d", "e", "f", "a", "g");
    Configuration config = Configuration.COMMAS;
    File nodeHeaderFile = nodeHeader(config);
    File nodeData1 = nodeData(false, config, nodeIds, lines(0, 4));
    File nodeData2 = nodeData(false, config, nodeIds, lines(4, nodeIds.size()));
    // WHEN
    importTool("--into", dbRule.getStoreDirAbsolutePath(), "--skip-duplicate-nodes", "--nodes", nodeHeaderFile.getAbsolutePath() + MULTI_FILE_DELIMITER + nodeData1.getAbsolutePath() + MULTI_FILE_DELIMITER + nodeData2.getAbsolutePath());
    // THEN
    GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
    try (Transaction tx = db.beginTx()) {
        // there should not be duplicates of any node
        Iterator<Node> nodes = db.getAllNodes().iterator();
        Iterator<String> expectedIds = FilteringIterator.noDuplicates(nodeIds.iterator());
        while (expectedIds.hasNext()) {
            assertTrue(nodes.hasNext());
            assertEquals(expectedIds.next(), nodes.next().getProperty("id"));
        }
        assertFalse(nodes.hasNext());
        // also all nodes in the label index should exist
        for (int i = 0; i < MAX_LABEL_ID; i++) {
            Label label = Label.label(labelName(i));
            try (ResourceIterator<Node> nodesByLabel = db.findNodes(label)) {
                while (nodesByLabel.hasNext()) {
                    assertTrue(nodesByLabel.next().hasLabel(label));
                }
            }
        }
        tx.success();
    } finally {
        db.shutdown();
    }
}

Example 2 with Label

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

the class GraphDbStructureGuide method showRelCounts.

private void showRelCounts(ReadOperations read, DbStructureVisitor visitor) {
    // all wildcards
    noSide(read, visitor, WILDCARD_REL_TYPE, ANY_RELATIONSHIP_TYPE);
    // one label only
    for (Label label : db.getAllLabels()) {
        int labelId = read.labelGetForName(label.name());
        leftSide(read, visitor, label, labelId, WILDCARD_REL_TYPE, ANY_RELATIONSHIP_TYPE);
        rightSide(read, visitor, label, labelId, WILDCARD_REL_TYPE, ANY_RELATIONSHIP_TYPE);
    }
    // fixed rel type
    for (RelationshipType relType : db.getAllRelationshipTypes()) {
        int relTypeId = read.relationshipTypeGetForName(relType.name());
        noSide(read, visitor, relType, relTypeId);
        for (Label label : db.getAllLabels()) {
            int labelId = read.labelGetForName(label.name());
            // wildcard on right
            leftSide(read, visitor, label, labelId, relType, relTypeId);
            // wildcard on left
            rightSide(read, visitor, label, labelId, relType, relTypeId);
        }
    }
}

Example 3 with Label

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

the class NodeProxyTest method createDropNodeLongArrayProperty.

@Test
public void createDropNodeLongArrayProperty() {
    Label markerLabel = Label.label("marker");
    String testPropertyKey = "testProperty";
    byte[] propertyValue = RandomUtils.nextBytes(1024);
    try (Transaction tx = db.beginTx()) {
        Node node = db.createNode(markerLabel);
        node.setProperty(testPropertyKey, propertyValue);
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        Node node = Iterators.single(db.findNodes(markerLabel));
        assertArrayEquals(propertyValue, (byte[]) node.getProperty(testPropertyKey));
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        Node node = Iterators.single(db.findNodes(markerLabel));
        node.removeProperty(testPropertyKey);
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        Node node = Iterators.single(db.findNodes(markerLabel));
        assertFalse(node.hasProperty(testPropertyKey));
        tx.success();
    }
}

Example 4 with Label

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

the class RelationshipProxyTest method createDropRelationshipLongStringProperty.

@Test
public void createDropRelationshipLongStringProperty() {
    Label markerLabel = DynamicLabel.label("marker");
    String testPropertyKey = "testProperty";
    String propertyValue = RandomStringUtils.randomAscii(255);
    try (Transaction tx = db.beginTx()) {
        Node start = db.createNode(markerLabel);
        Node end = db.createNode(markerLabel);
        Relationship relationship = start.createRelationshipTo(end, withName("type"));
        relationship.setProperty(testPropertyKey, propertyValue);
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        Relationship relationship = db.getRelationshipById(0);
        assertEquals(propertyValue, relationship.getProperty(testPropertyKey));
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        Relationship relationship = db.getRelationshipById(0);
        relationship.removeProperty(testPropertyKey);
        tx.success();
    }
    try (Transaction tx = db.beginTx()) {
        Relationship relationship = db.getRelationshipById(0);
        assertFalse(relationship.hasProperty(testPropertyKey));
        tx.success();
    }
}

Example 5 with Label

use of org.neo4j.graphdb.Label 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();
        }
    }
}