Examples with Product com.ncedu.fooddelivery.api.v1.entities.Product used on opensource projects

Example 16 with Product

use of com.ncedu.fooddelivery.api.v1.entities.Product in project 2021-msk-food-delivery by netcracker-edu.

the class ProductServiceImpl method deleteProduct.

@Override
public void deleteProduct(Long id) {
    Product product = getProductById(id);
    productRepo.delete(product);
}

Example 17 with Product

use of com.ncedu.fooddelivery.api.v1.entities.Product in project youtubechannel by lspil.

the class Example2 method main.

public static void main(String[] args) {
    var emf = Persistence.createEntityManagerFactory("my-persistence-unit");
    var em = emf.createEntityManager();
    em.getTransaction().begin();
    CriteriaBuilder builder = em.getCriteriaBuilder();
    CriteriaQuery<Product> query = builder.createQuery(Product.class);
    Root<Product> product = query.from(Product.class);
    query.select(product);
    TypedQuery<Product> tq = em.createQuery(query);
    List<Product> result = tq.getResultList();
    result.forEach(System.out::println);
    em.getTransaction().commit();
    em.close();
}

Example 18 with Product

use of com.ncedu.fooddelivery.api.v1.entities.Product in project youtubechannel by lspil.

the class Example4 method buildProductCriteriaQuery.

public static CriteriaQuery<Product> buildProductCriteriaQuery(EntityManager em) {
    CriteriaBuilder builder = em.getCriteriaBuilder();
    CriteriaQuery<Product> query = builder.createQuery(Product.class);
    var param = builder.parameter(Double.class, "price");
    Root<Product> product = query.from(Product.class);
    query.select(product).where(builder.greaterThan(product.get("price"), param));
    return query;
}

Example 19 with Product

use of com.ncedu.fooddelivery.api.v1.entities.Product in project youtubechannel by lspil.

the class Example3 method main.

public static void main(String[] args) {
    var emf = Persistence.createEntityManagerFactory("my-persistence-unit");
    var em = emf.createEntityManager();
    em.getTransaction().begin();
    CriteriaBuilder builder = em.getCriteriaBuilder();
    CriteriaQuery<Product> query = builder.createQuery(Product.class);
    Root<Product> product = query.from(Product.class);
    query.select(query.from(Product.class));
    TypedQuery<Product> tq = em.createQuery(query);
    List<Product> result = tq.getResultList();
    result.forEach(System.out::println);
    em.getTransaction().commit();
    em.close();
}

Example 20 with Product

use of com.ncedu.fooddelivery.api.v1.entities.Product in project youtubechannel by lspil.

the class Example4 method findProductsByPrice.

// WRONG!
public List<Product> findProductsByPrice(EntityManager em, double price) {
    CriteriaBuilder builder = em.getCriteriaBuilder();
    CriteriaQuery<Product> query = builder.createQuery(Product.class);
    Root<Product> product = query.from(Product.class);
    query.select(product).where(builder.greaterThan(product.get("price"), price));
    TypedQuery<Product> tq = em.createQuery(query);
    List<Product> result = tq.getResultList();
    return result;
}