bachmanm

@Test
public void showSimpleEventHandling() {
    GraphDatabaseService database = new TestGraphDatabaseFactory().newImpermanentDatabase();

    database.registerTransactionEventHandler(new TransactionEventHandler<Void>() {
        @Override
        public Void beforeCommit(TransactionData data) throws Exception {
            System.out.println("Committing transaction");
            return null;
        }

bachmanm

@Test(expected = TransactionFailureException.class)
public void attemptLoggingDeletedNodes() {
    GraphDatabaseService database = new TestGraphDatabaseFactory().newImpermanentDatabase();

    database.registerTransactionEventHandler(new TransactionEventHandler.Adapter<Void>() {
        @Override
        public Void beforeCommit(TransactionData data) throws Exception {
            for (Node deletedNode : data.deletedNodes()) {
                StringBuilder message = new StringBuilder("About to delete node ID ")
                        .append(deletedNode.getId())

bachmanm

public interface ImprovedTransactionData {

    boolean hasBeenCreated(Node node);
    Collection<Node> getAllCreatedNodes();
    
    boolean hasBeenDeleted(Node node);
    Node getDeleted(Node node);
    Collection<Node> getAllDeletedNodes();

    boolean hasBeenChanged(Node node);