Hi,
i am playing with JPA, but there is no useful information about that. A
simple example to display a database table.
The entities class is in the right package entities. I did not added
something to the AppModule class. The persistence.xml exists.
Customer.tml
<html t:type="layout" title="Customer"
xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd";
xmlns:p="tapestry:parameter">
<table t:type="grid" source="customers"/>
</html>
Customers.class
public class Customers {
@Property
private Customer customer;
private EntityManagerFactory factory;
private EntityManager entityManager;
@Inject
private Logger logger;
@Inject
private BeanModelSource beanModelSource;
@Inject
private Messages messages;
@Log
public List<Customers> getCustomers() {
factory =
Persistence.createEntityManagerFactory("de.aeits_TapestryWeb_war_1.0-SNAPSHOTPU");
entityManager = factory.createEntityManager();
return
entityManager.createNamedQuery("Customer.findAll").getResultList();
}
}
What about the DAO and DAOImpl there are no informations how to use this
classes with a simple query page.
In all docus i found only
'entityManager.createNamedQuery("Customer.findAll").getResultList();' is
needed, but i get a null pointer expection.
Thanks
Andreas
--
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