我正在迁移这样的应用程序：
Vehicle v = null;
using (ISession session = MyNHibernateSession())
{
v = Vehicle.FindById(1);
}
using (ISession session = MyNHibernateSession())
{
// somwwhere into these4 lines Vehicle comes Finded
DoSomething();
DoSomething2();
DoSomething3();
DoSomething4();
DoSomething5();
DoSomething6();
// if i do this i get an error "another object with the same id etc etc etc
session.Update(v);
}
我不想这样做：
session.EvictAllByType(typeof(Vehicle));
可能吗？怎么样？,
谢谢
解决方法
这个问题可能已经过时了,但我在搜索这个问题时最终到了这里.所以这就是我最终做到的方式：
public static void EvictAll<T>(this ISession session,Predicate<T> predicate = null)
{
if (predicate == null)
predicate = x => true;
foreach (var entity in session.CachedEntities<T>().Where(predicate.Invoke).ToArray())
session.Evict(entity);
}
public static IEnumerable<T> CachedEntities<T>(this ISession session)
{
var sessionImplementation = session.GetSessionImplementation();
var entities = sessionImplementation.PersistenceContext.EntityEntries.Keys.OfType<T>();
return entities;
}
