Package com.graphaware.tx.executor.single

Examples of com.graphaware.tx.executor.single.SimpleTransactionExecutor

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    public void demonstrateLogging() {
        performMutations(database);
    }

    private void performMutations(GraphDatabaseService database) {
        SimpleTransactionExecutor executor = new SimpleTransactionExecutor(database);

        //create nodes
        executor.executeInTransaction(new VoidReturningCallback() {
            @Override
            protected void doInTx(GraphDatabaseService database) {
                database.createNode(label("SomeLabel1"));

                Node node1 = database.createNode(label("SomeLabel2"));
                node1.setProperty("name", "One");

                Node node2 = database.createNode();
                node2.setProperty("name", "Two");

                Node node3 = database.createNode();
                node3.setProperty("name", "Three");
            }
        });

        //create relationship
        executor.executeInTransaction(new VoidReturningCallback() {
            @Override
            protected void doInTx(GraphDatabaseService database) {
                Node one = database.getNodeById(1);
                Node two = database.getNodeById(2);

                Relationship relationship = one.createRelationshipTo(two, withName("TEST"));
                relationship.setProperty("level", 2);

                two.createRelationshipTo(one, withName("TEST"));
            }
        });

        //change and delete nodes
        executor.executeInTransaction(new VoidReturningCallback() {
            @Override
            protected void doInTx(GraphDatabaseService database) {
                database.getNodeById(3).delete();
                database.getNodeById(1).setProperty("name", "New One");
                database.getNodeById(1).setProperty("numbers", new int[]{1, 2, 3});
                database.getNodeById(2).addLabel(label("NewLabel"));
            }
        });

        //change and delete relationships
        executor.executeInTransaction(new VoidReturningCallback() {
            @Override
            protected void doInTx(GraphDatabaseService database) {
                database.getNodeById(2).getSingleRelationship(withName("TEST"), OUTGOING).delete();

                database.getNodeById(1).getSingleRelationship(withName("TEST"), OUTGOING).setProperty("level", 3);
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    @Test
    public void shouldReturnAllNodesFromTheDatabaseWithGaps() {
        GraphDatabaseService database = new GraphDatabaseFactory().newEmbeddedDatabase(temporaryFolder.getRoot().getAbsolutePath());

        new SimpleTransactionExecutor(database).executeInTransaction(new VoidReturningCallback() {
            @Override
            protected void doInTx(GraphDatabaseService database) {
                Node node1 = database.createNode();
                Node node2 = database.createNode();
                Node node3 = database.createNode();
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*/
public class JustForDocs {

    private void justForDocs() {
        GraphDatabaseService database = new TestGraphDatabaseFactory().newImpermanentDatabase(); //only for demo, use your own persistent one!
        TransactionExecutor executor = new SimpleTransactionExecutor(database);

        executor.executeInTransaction(new VoidReturningCallback() {
            @Override
            public void doInTx(GraphDatabaseService database) {
                database.createNode();
            }
        });
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     */
    public IterableInputBatchTransactionExecutor(GraphDatabaseService database, int batchSize, Iterable<T> input, UnitOfWork<T> unitOfWork) {
        this.batchSize = batchSize;
        this.unitOfWork = unitOfWork;
        this.iterator = new SynchronizedIterator<>(input.iterator());
        this.executor = new SimpleTransactionExecutor(database);
    }
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     * @param unitOfWork to be executed for each input item. Must be thread-safe.
     */
    public IterableInputBatchTransactionExecutor(GraphDatabaseService database, int batchSize, final TransactionCallback<Iterable<T>> callback, UnitOfWork<T> unitOfWork) {
        this.batchSize = batchSize;
        this.unitOfWork = unitOfWork;
        this.executor = new SimpleTransactionExecutor(database);
        this.iterator = executor.executeInTransaction(new TransactionCallback<Iterator<T>>() {
            @Override
            public Iterator<T> doInTransaction(GraphDatabaseService database) throws Exception {
                return new SynchronizedIterator<>(callback.doInTransaction(database).iterator());
            }
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Related Classes of com.graphaware.tx.executor.single.SimpleTransactionExecutor

  • com.graphaware.example.ChangeLoggerDemo
  • com.graphaware.tx.event.batch.TransactionSimulatingBatchInserterIntegrationTest
  • com.graphaware.tx.executor.batch.IterableInputBatchTransactionExecutor
  • com.graphaware.tx.executor.JustForDocs
  • org.neo4j.graphdb.Transaction
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