Я начал с примера Northwind spring.net/NHibernate. Я пытаюсь получить существующий пример для создания схемы. Я изменил запись CustomerEditController web.xml на
<object name="CustomerEditController" type="NHibernateCustomerEditController" scope="session">
<constructor-arg name="sessionFactory" ref="NHibernateSessionFactory"/>
<constructor-arg name="local" ref="&NHibernateSessionFactory"/>
</object>`
Изменено NHibernateCustomerEditController
на следующее:
public class NHibernateCustomerEditController : ICustomerEditController
{
private readonly ISessionFactory sessionFactory;
private readonly LocalSessionFactoryObject LocalsessionFactory;
private Customer currentCustomer;
public NHibernateCustomerEditController(ISessionFactory sessionFactory, LocalSessionFactoryObject local)
{
this.sessionFactory = sessionFactory;
this.LocalsessionFactory = local;
}
private ISession Session
{
get { return sessionFactory.GetCurrentSession(); }
}
public void EditCustomer(Customer customer)
{
currentCustomer = customer;
}
public void Clear()
{
currentCustomer = null;
}
public Customer CurrentCustomer
{
get
{
Customer customer = currentCustomer;
//since the Customer entity may have been retrieved from a prior request, we need to reattach it to the current session
// in order to support lazy-loading, etc. on the Customer
Session.Lock(customer, LockMode.None);
return customer;
}
}
public void MakeANewDatabase() {
SchemaExport schema = new SchemaExport(LocalsessionFactory.Configuration);
schema.Create(true, true);
}
}
Я добавил кнопку на страницу списка клиентов, которая ведет к методу MakeANewDatabase
.
Когда я нажимаю кнопку, я получаю сообщение об ошибке There was no DB provider available, unable to create connection
. Похоже, что когда SchemaExport
создается, DBProvider
является нулевым.
Полный текст ошибки:
An exception of type 'System.Exception' occurred in Spring.Data.NHibernate30.DLL but was not handled in user code
Additional information: There was no DB provider available, unable to create connection
An exception of type 'NHibernate.HibernateException' occurred in NHibernate.DLL but was not handled in user code
Additional information: There was no DB provider available, unable to create connection