Examples with Statement org.neo4j.kernel.api.Statement used on opensource projects

Example 91 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class NodeProxy method getPropertyKeys.

@Override
public Iterable<String> getPropertyKeys() {
    try (Statement statement = actions.statement()) {
        List<String> keys = new ArrayList<>();
        PrimitiveIntIterator properties = statement.readOperations().nodeGetPropertyKeys(getId());
        while (properties.hasNext()) {
            keys.add(statement.readOperations().propertyKeyGetName(properties.next()));
        }
        return keys;
    } catch (EntityNotFoundException e) {
        throw new NotFoundException("Node not found", e);
    } catch (PropertyKeyIdNotFoundKernelException e) {
        throw new IllegalStateException("Property key retrieved through kernel API should exist.", e);
    }
}

Example 92 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class GraphPropertiesProxy method getProperties.

@Override
public Map<String, Object> getProperties(String... names) {
    try (Statement statement = actions.statement()) {
        Map<String, Object> properties = new HashMap<>();
        ReadOperations readOperations = statement.readOperations();
        for (String name : names) {
            int propertyKeyId = readOperations.propertyKeyGetForName(name);
            Object value = readOperations.graphGetProperty(propertyKeyId);
            if (value != null) {
                properties.put(name, value);
            }
        }
        return properties;
    }
}

Example 93 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class SchemaImpl method getIndexPopulationProgress.

@Override
public IndexPopulationProgress getIndexPopulationProgress(IndexDefinition index) {
    actions.assertInOpenTransaction();
    try (Statement statement = statementContextSupplier.get()) {
        ReadOperations readOps = statement.readOperations();
        NewIndexDescriptor descriptor = getIndexDescriptor(readOps, index);
        PopulationProgress progress = readOps.indexGetPopulationProgress(descriptor);
        return new IndexPopulationProgress(progress.getCompleted(), progress.getTotal());
    } catch (SchemaRuleNotFoundException | IndexNotFoundKernelException e) {
        throw new NotFoundException(format("No index for label %s on property %s", index.getLabel().name(), index.getPropertyKeys()));
    }
}

Example 94 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class SchemaImpl method getIndexState.

@Override
public IndexState getIndexState(final IndexDefinition index) {
    actions.assertInOpenTransaction();
    try (Statement statement = statementContextSupplier.get()) {
        ReadOperations readOps = statement.readOperations();
        NewIndexDescriptor descriptor = getIndexDescriptor(readOps, index);
        InternalIndexState indexState = readOps.indexGetState(descriptor);
        switch(indexState) {
            case POPULATING:
                return POPULATING;
            case ONLINE:
                return ONLINE;
            case FAILED:
                return FAILED;
            default:
                throw new IllegalArgumentException(String.format("Illegal index state %s", indexState));
        }
    } catch (SchemaRuleNotFoundException | IndexNotFoundKernelException e) {
        throw new NotFoundException(format("No index for label %s on property %s", index.getLabel().name(), index.getPropertyKeys()));
    }
}

Example 95 with Statement

use of org.neo4j.kernel.api.Statement in project neo4j by neo4j.

the class GraphDatabaseFacade method init.

/**
     * Create a new Core API facade, backed by the given SPI and using pre-resolved dependencies
     */
public void init(SPI spi, Guard guard, ThreadToStatementContextBridge txBridge, Config config) {
    this.spi = spi;
    this.defaultTransactionTimeout = config.get(GraphDatabaseSettings.transaction_timeout);
    Supplier<Statement> statementSupplier = spi::currentStatement;
    Supplier<KernelTransaction> transactionSupplier = spi::currentTransaction;
    ThrowingAction<RuntimeException> assertTransactionOpen = this::assertTransactionOpen;
    this.schema = new SchemaImpl(statementSupplier);
    this.relActions = new StandardRelationshipActions(statementSupplier, transactionSupplier, assertTransactionOpen, (id) -> new NodeProxy(nodeActions, id), this);
    this.nodeActions = new StandardNodeActions(statementSupplier, transactionSupplier, assertTransactionOpen, relActions, this);
    this.indexManager = Suppliers.lazySingleton(() -> {
        IndexProviderImpl idxProvider = new IndexProviderImpl(this, statementSupplier);
        AutoIndexerFacade<Node> nodeAutoIndexer = new AutoIndexerFacade<>(() -> new ReadOnlyIndexFacade<>(idxProvider.getOrCreateNodeIndex(NODE_AUTO_INDEX, null)), spi.autoIndexing().nodes());
        RelationshipAutoIndexerFacade relAutoIndexer = new RelationshipAutoIndexerFacade(() -> new ReadOnlyRelationshipIndexFacade(idxProvider.getOrCreateRelationshipIndex(RELATIONSHIP_AUTO_INDEX, null)), spi.autoIndexing().relationships());
        return new IndexManagerImpl(statementSupplier, idxProvider, nodeAutoIndexer, relAutoIndexer);
    });
    this.contextFactory = Neo4jTransactionalContextFactory.create(spi, guard, txBridge, locker);
}