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

Example 41 with Label

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

the class Set method exec.

@Override
protected Continuation exec(AppCommandParser parser, Session session, Output out) throws ShellException {
    boolean forProperty = parser.options().containsKey("p");
    boolean forLabel = parser.options().containsKey("l");
    if (forProperty || !forLabel) {
        // Property
        if (parser.arguments().size() < 2) {
            throw new ShellException("Must supply key and value, " + "like: set title \"This is a my title\"");
        }
        String key = parser.arguments().get(0);
        ValueType valueType = getValueType(parser);
        Object value = parseValue(parser.arguments().get(1), valueType);
        NodeOrRelationship thing = getCurrent(session);
        thing.setProperty(key, value);
    } else {
        // Label
        Node node = getCurrent(session).asNode();
        for (Label label : parseLabels(parser)) {
            node.addLabel(label);
        }
    }
    return Continuation.INPUT_COMPLETE;
}

Example 42 with Label

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

the class ClusterLocksIT method aPendingMemberShouldBeAbleToServeReads.

@Test
public void aPendingMemberShouldBeAbleToServeReads() throws Throwable {
    // given
    createNodeOnMaster(testLabel, cluster.getMaster());
    cluster.sync();
    HighlyAvailableGraphDatabase slave = cluster.getAnySlave();
    cluster.fail(slave, ClusterManager.NetworkFlag.values());
    cluster.await(instanceEvicted(slave));
    assertEquals(PENDING, slave.getInstanceState());
    // when
    for (int i = 0; i < 10; i++) {
        try (Transaction tx = slave.beginTx()) {
            Node single = Iterables.single(slave.getAllNodes());
            Label label = Iterables.single(single.getLabels());
            assertEquals(testLabel, label);
            tx.success();
            break;
        } catch (TransactionTerminatedException e) {
            // Race between going to pending and reading, try again in a little while
            Thread.sleep(1_000);
        }
    }
// then no exceptions thrown
}

Example 43 with Label

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

the class StoreUpgradeIntegrationTest method checkLabelCounts.

private static void checkLabelCounts(GraphDatabaseAPI db) {
    try (Transaction ignored = db.beginTx()) {
        HashMap<Label, Long> counts = new HashMap<>();
        for (Node node : db.getAllNodes()) {
            for (Label label : node.getLabels()) {
                Long count = counts.get(label);
                if (count != null) {
                    counts.put(label, count + 1);
                } else {
                    counts.put(label, 1L);
                }
            }
        }
        ThreadToStatementContextBridge bridge = db.getDependencyResolver().resolveDependency(ThreadToStatementContextBridge.class);
        Statement statement = bridge.get();
        for (Map.Entry<Label, Long> entry : counts.entrySet()) {
            assertEquals(entry.getValue().longValue(), statement.readOperations().countsForNode(statement.readOperations().labelGetForName(entry.getKey().name())));
        }
    }
}

Example 44 with Label

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

the class SchemaProcedure method buildSchemaGraph.

public GraphResult buildSchemaGraph() {
    final Map<String, NodeImpl> nodes = new HashMap<>();
    final Map<String, Set<RelationshipImpl>> relationships = new HashMap<>();
    try (Statement statement = kernelTransaction.acquireStatement()) {
        ReadOperations readOperations = statement.readOperations();
        StatementTokenNameLookup statementTokenNameLookup = new StatementTokenNameLookup(readOperations);
        try (Transaction transaction = graphDatabaseAPI.beginTx()) {
            // add all labelsInDatabase
            ResourceIterator<Label> labelsInDatabase = graphDatabaseAPI.getAllLabelsInUse().iterator();
            while (labelsInDatabase.hasNext()) {
                Label label = labelsInDatabase.next();
                Map<String, Object> properties = new HashMap<>();
                Iterator<NewIndexDescriptor> indexDescriptorIterator = readOperations.indexesGetForLabel(readOperations.labelGetForName(label.name()));
                ArrayList<String> indexes = new ArrayList<>();
                while (indexDescriptorIterator.hasNext()) {
                    NewIndexDescriptor index = indexDescriptorIterator.next();
                    String[] propertyNames = PropertyNameUtils.getPropertyKeys(statementTokenNameLookup, index.schema().getPropertyIds());
                    indexes.add(String.join(",", propertyNames));
                }
                properties.put("indexes", indexes);
                Iterator<ConstraintDescriptor> nodePropertyConstraintIterator = readOperations.constraintsGetForLabel(readOperations.labelGetForName(label.name()));
                ArrayList<String> constraints = new ArrayList<>();
                while (nodePropertyConstraintIterator.hasNext()) {
                    PropertyConstraint constraint = ConstraintBoundary.map(nodePropertyConstraintIterator.next());
                    constraints.add(constraint.userDescription(statementTokenNameLookup));
                }
                properties.put("constraints", constraints);
                getOrCreateLabel(label.name(), properties, nodes);
            }
            //add all relationships
            Iterator<RelationshipType> relationshipTypeIterator = graphDatabaseAPI.getAllRelationshipTypesInUse().iterator();
            while (relationshipTypeIterator.hasNext()) {
                RelationshipType relationshipType = relationshipTypeIterator.next();
                String relationshipTypeGetName = relationshipType.name();
                int relId = readOperations.relationshipTypeGetForName(relationshipTypeGetName);
                ResourceIterator<Label> labelsInUse = graphDatabaseAPI.getAllLabelsInUse().iterator();
                List<NodeImpl> startNodes = new LinkedList<>();
                List<NodeImpl> endNodes = new LinkedList<>();
                while (labelsInUse.hasNext()) {
                    Label labelToken = labelsInUse.next();
                    String labelName = labelToken.name();
                    Map<String, Object> properties = new HashMap<>();
                    NodeImpl node = getOrCreateLabel(labelName, properties, nodes);
                    int labelId = readOperations.labelGetForName(labelName);
                    if (readOperations.countsForRelationship(labelId, relId, ReadOperations.ANY_LABEL) > 0) {
                        startNodes.add(node);
                    }
                    if (readOperations.countsForRelationship(ReadOperations.ANY_LABEL, relId, labelId) > 0) {
                        endNodes.add(node);
                    }
                }
                for (NodeImpl startNode : startNodes) {
                    for (NodeImpl endNode : endNodes) {
                        RelationshipImpl relationship = addRelationship(startNode, endNode, relationshipTypeGetName, relationships);
                    }
                }
            }
            transaction.success();
            return getGraphResult(nodes, relationships);
        }
    }
}

Example 45 with Label

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

the class GraphDatabaseFacade method allNodesWithLabel.

private ResourceIterator<Node> allNodesWithLabel(final Label myLabel) {
    Statement statement = spi.currentStatement();
    int labelId = statement.readOperations().labelGetForName(myLabel.name());
    if (labelId == KeyReadOperations.NO_SUCH_LABEL) {
        statement.close();
        return emptyIterator();
    }
    final PrimitiveLongIterator nodeIds = statement.readOperations().nodesGetForLabel(labelId);
    return ResourceClosingIterator.newResourceIterator(statement, map(nodeId -> new NodeProxy(nodeActions, nodeId), nodeIds));
}