Hi,
I'm trying to integrate an EJB-Project (which is connected to a
database by hibernate) into my GWT (in more detail move from CDI-Weld
implementation to GWT).
I created a new ejb-project only containing my entities and their
clients.
Within my GWT-project I reference to my ejb-project and included the
compiled class-files into WEB-INF/classes as described everywhere.
>From my ServerServiceImpl the entity are reached, my stateless-class
is called, but the entityManager remains null as I try to reach my
database.
my code:
ServiceImpl:
private Product product;
@EJB(name = "Product" )
public void setProduct(Product product)
{
this.product = product;
}
public DatabaseBuilderServiceImpl()
{
}
public boolean createDefaultDatabaseEntries()
{
boolean returnvalue = false;
returnvalue = product.createTestEntry();
return returnvalue;
my Interface:
public interface Product
{
List<ProductEntity> findAll();
ProductEntity getProductBy(String productSymbol);
List<OptionEntity> getOptionsBy(ProductEntity currentProduct);
List<VariantEntity> getVariantsBy(ProductEntity currentProduct);
boolean createTestEntry();
}
my stateless-bean:
@Stateless(name = "Product")
@Local(Product.class)
public class ProductHome extends HomeBase<ProductEntity> implements
Serializable, Product
{
@PersistenceContext(unitName="sung.app.kylintv.ejb")
protected EntityManager entityManager;
@EJB
protected Option sessionOption;
/**
* @return List of available products
*/
@SuppressWarnings("unchecked")
@TransactionAttribute(REQUIRED)
public List<ProductEntity> findAll()
{
return entityManager.createQuery("SELECT p FROM ProductEntity
p ORDER BY p.id").getResultList();
}
@TransactionAttribute(REQUIRED)
public ProductEntity getProductBy(String productSymbol)
{
return (ProductEntity) entityManager.createQuery("SELECT p FROM
ProductEntity p WHERE p.name = :productSymbol ORDER BY
p.id").setParameter("productSymbol", productSymbol).getSingleResult();
}
@SuppressWarnings("unchecked")
@TransactionAttribute(REQUIRED)
public List<OptionEntity> getOptionsBy(ProductEntity
currentProduct)
{
return entityManager.createQuery("SELECT p FROM OptionEntity p
WHERE p.product = :currentProduct ORDER BY
p.id").setParameter("currentProduct", currentProduct).getResultList();
}
}
the function inside my bean is reached, the entityManager is null.
How can I ensure the PersistenceInjection?
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