Spring-data-Neo4j:Connecting to the Graph

1. SessionFactory
   1.1. Configuration

SessionFactory sessionFactory = new SessionFactory(configuration, "com.mycompany.app.domainclasses");

1.2. Driver

    SessionFactory sessionFactory = new SessionFactory(driver, "com.mycompany.app.domainclasses");

1.2.1 Embedded driver instance

GraphDatabaseService db = new GraphDatabaseFactory()
            .newEmbeddedDatabaseBuilder(new File(storeDir))
           .loadPropertiesFromFile(pathToConfigFile)
            .newDatabase();

GraphDatabaseService db = new GraphDatabaseFactory()
            .newEmbeddedDatabaseBuilder(new File(storeDir))
            .setConfig( GraphDatabaseSettings.pagecache_memory, "512M" )
            .newDatabase();

EmbeddedDriver driver = new EmbeddedDriver(db)

SessionFactory sessionFactory = new SessionFactory(driver, "com.mycompany.app.domainclasses");

1.3  Multiple entity packages

SessionFactory sessionFactory = new SessionFactory(configuration, "first.package.domain", "second.package.domain",...);

1.4 Registering an EventListener

class AddUuidPreSaveEventListener implements EventListener {

    void onPreSave(Event event) {
        DomainEntity entity = (DomainEntity) event.getObject():
        if (entity.getId() == null) {
            entity.setUUID(UUID.randomUUID());
        }
    }
    void onPostSave(Event event) {
    }
    void onPreDelete(Event event) {
    }
    void onPostDelete(Event event) {
}

EventListener eventListener = new AddUuidPreSaveEventListener();

// register it on an individual session
session.register(eventListener);

// remove it.
session.dispose(eventListener);

// register it across multiple sessions
sessionFactory.register(eventListener);

// remove it.
sessionFactory.deregister(eventListener);