Jakarta Data 1.0 hits Milestone 2 in 24.0.0.1-beta

@Entity
public class Product {
    @Id
    public long id;

    public String name;

    public float price;

    @Version
    public long version;
}

@Repository(dataStore = "java:app/jdbc/my-example-data")
public interface Products {
    @Insert
    Product add(Product newProduct);

    @Update
    boolean modify(Product product);

    @Delete
    boolean remove(Product product);

    // parameter based query that requires compilation with -parameters to preserve parameter names
    Optional<Product> find(long id);

    // query-by-method name pattern:
    KeysetAwarePage<Product> findByNameIgnoreCaseContains(String searchFor, Pageable pageRequest);

    // query via JPQL:
    @Query("UPDATE Product o SET o.price = o.price - (?2 * o.price) WHERE o.id = ?1")
    boolean discount(long productId, float discountRate);
}

@DataSourceDefinition(name = "java:app/jdbc/my-example-data",
                      className = "org.postgresql.xa.PGXADataSource",
                      databaseName = "ExampleDB",
                      serverName = "localhost",
                      portNumber = 5432,
                      user = "${example.database.user}",
                      password = "${example.database.password}")
public class MyServlet extends HttpServlet {
    @Inject
    Products products;

    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        // Insert:
        Product prod = ...
        prod = products.add(prod);

        // Update:
        prod.price = prod.price + 1.00;
        if (products.update(prod))
            System.out.println("Successfully increased the price.");
        else {
            // someone else either removed the product or updated its version before we could
            prod = products.find(productId).orElseThrow();
            ...
        }

        // Request only the first 10 results on a page, ordered by price, then name, then id:
        Pageable pageRequest = Pageable.size(10).sortBy(Sort.desc("price"), Sort.asc("name"), Sort.asc("id"));
        KeysetAwarePage<Product> page = products.findByNameIgnoreCaseContains(searchFor, pageRequest);
        ...
        // Request the next page relative to the end of the current page
        page = products.findByNameIgnoreCaseContains(searchFor, page.nextPageable());
        ...
        // Request the prior page relative to the start of the current page
        page = products.findByNameIgnoreCaseContains(searchFor, page.previousPageable());
        ...
    }
}