@Inject
KeyValueTemplate template;
...

Car ferrari = Car.id(1L).name("ferrari").city("Rome").type(CarType.SPORT);

template.put(ferrari);
Optional<Car> car = template.get(1L, Car.class);
template.delete(1L);

@Alternative
@Priority(Interceptor.Priority.APPLICATION)
@ApplicationScoped
public class ManagerSupplier implements Supplier<BucketManager> {

    @Produces
    public BucketManager get() {
        Settings settings = Settings.builder()
                .put("credential", "value")
                .build();
        KeyValueConfiguration configuration = new NoSQLKeyValueProvider();
        BucketManagerFactory factory = configuration.apply(settings);
        return factory.apply("database");
    }
}

@Inject
@Database(value = DatabaseType.KEY_VALUE, provider = "databaseA")
private KeyValueTemplate templateA;

@Inject
@Database(value = DatabaseType.KEY_VALUE, provider = "databaseB")
private KeyValueTemplate templateB;

// producers methods
@Produces
@Database(value = DatabaseType.KEY_VALUE, provider = "databaseA")
public BucketManager getManagerA() {
    BucketManager manager = // instance;
    return manager;
}

@Produces
@Database(value = DatabaseType.KEY_VALUE, provider = "databaseB")
public BucketManager getManagerB() {
    BucketManager manager = // instance;
    return manager;
}

import javax.inject.Inject;

// Inject a List<String> instance from the "names" bucket in the key-value database.
@Inject
@KeyValueDatabase("names")
private List<String> names;

// Inject a Set<String> instance from the "fruits" bucket in the key-value database.
@Inject
@KeyValueDatabase("fruits")
private Set<String> fruits;

// Inject a Queue<String> instance from the "orders" bucket in the key-value database.
@Inject
@KeyValueDatabase("orders")
private Queue<String> orders;

// Inject a Map<String, String> instance from the "orders" bucket in the key-value database.
@Inject
@KeyValueDatabase("orders")
private Map<String, String> map;

@Inject
ColumnTemplate template;
...

Car ferrari = Car.id(1L)
        .name("ferrari").city("Rome")
        .type(CarType.SPORT);

template.insert(ferrari);
Optional<Car> car = template.find(Car.class, 1L);

template.delete(Car.class).where("id").eq(1L).execute();

Optional<Car> result = template.singleResult("select * from Car where _id = 1");

@Alternative
@Priority(Interceptor.Priority.APPLICrATION)
@ApplicationScoped
public class ManagerSupplier implements Supplier<DatabaseManager> {

    @Produces
    @Database(DatabaseType.COLUMN)
    public DatabaseManager get() {
        Settings settings = Settings.builder()
                .put("credential", "value")
                .build();
        DatabaseConfiguration configuration = new NoSQLColumnProvider();
        DatabaseManagerFactory factory = configuration.apply(settings);
        return factory.apply("database");
    }
}

@Inject
@Database(value = DatabaseType.COLUMN, provider = "databaseA")
private ColumnTemplate templateA;

@Inject
@Database(value = DatabaseType.COLUMN, provider = "databaseB")
private ColumnTemplate templateB;

// producers methods
@Produces
@Database(value = DatabaseType.COLUMN, provider = "databaseA")
public ColumnManager getManagerA() {
    return manager;
}

@Produces
@Database(value = DatabaseType.COLUMN, provider = "databaseB")
public ColumnManager getManagerB() {
    return manager;
}

@Inject
DocumentTemplate template;
...

Car ferrari = Car.id(1L)
        .name("ferrari")
        .city("Rome")
        .type(CarType.SPORT);

template.insert(ferrari);
Optional<Car> car = template.find(Car.class, 1L);

template.delete(Car.class).where("id").eq(1L).execute();

Optional<Car> result = template.singleResult("select * from Car where _id = 1");

@Alternative
@Priority(Interceptor.Priority.APPLICATION)
@ApplicationScoped
public class ManagerSupplier implements Supplier<DatabaseManager> {

    @Produces
    @Database(DatabaseType.DOCUMENT)
    public DatabaseManager get() {
        Settings settings = Settings.builder()
                .put("credential", "value")
                .build();
        DatabaseConfiguration configuration = new NoSQLDocumentProvider();
        DatabaseManagerFactory factory = configuration.apply(settings);
        return factory.apply("database");
    }
}

@Inject
@Database(value = DatabaseType.DOCUMENT, provider = "databaseA")
private DocumentTemplate templateA;

@Inject
@Database(value = DatabaseType.DOCUMENT, provider = "databaseB")
private DocumentTemplate templateB;

// producers methods
@Produces
@Database(value = DatabaseType.DOCUMENT, provider = "databaseA")
public DocumentManager getManagerA() {
    return manager;
}

@Produces
@Database(value = DatabaseType.DOCUMENT, provider = "databaseB")
public DocumentManager getManagerB() {
    return manager;
}

@Inject
GraphTemplate template;
...

Category java = Category.of("Java");
Book effectiveJava = Book.of("Effective Java");

template.insert(java);
template.insert(effectiveJava);
EdgeEntity edge = template.edge(java, "is", software);

Stream<Book> books = template.getTraversalVertex()
        .hasLabel("Category")
        .has("name", "Java")
        .in("is")
        .hasLabel("Book")
        .getResult();

@Alternative
@Priority(Interceptor.Priority.APPLICATION)
public class ManagerSupplier implements Supplier<Graph> {

    @Produces
    public Graph get() {
        Graph graph = ...; // from a provider
        return graph;
    }
}

@Inject
@Database(value = DatabaseType.GRAPH, provider = "databaseA")
private GraphTemplate templateA;

@Inject
@Database(value = DatabaseType.GRAPH, provider = "databaseB")
private GraphTemplate templateB;

// producers methods
@Produces
@Database(value = DatabaseType.GRAPH, provider = "databaseA")
public Graph getManagerA() {
    return manager;
}

@Produces
@Database(value = DatabaseType.GRAPH, provider = "databaseB")
public Graph getManagerB() {
    return manager;
}