TargetProcess Development Tricks: Clear NHiberante cache using ASP.NET handler (.ashx) | Targetprocess - Enterprise Agility Solution
12 years ago

TargetProcess Development Tricks: Clear NHiberante cache using ASP.NET handler (.ashx)

Sometimes we need to clear cache of NHibernate. For example when the database was changed without using NHibernate. We have created the corresponding handler in web application ClearCache.ashx with the following code:

<%@ WebHandler Language="C#" Class="ClearCache" %>
using System;
using System.Collections;
using System.Web;
using NHibernate;

public class ClearCache : IHttpHandler
{
  public void ProcessRequest(HttpContext context)
  {
      context.Response.ContentType = "text/plain";

      //Need to retrieve ISession using your NHibernate session provider. In my case it is done in the following way
      ISession session = Portal.Instance.GetCurrentSession();

      DoCacheClearing(session);

      context.Response.Write("Done");
  }

  public void DoCacheClearing(ISession session)
  {
      ISessionFactory factory = session.SessionFactory;

      factory.EvictQueries();

      ICollection types = factory.GetAllClassMetadata().Keys;

      foreach (Type type in types)
          factory.Evict(type);

      foreach (string role in factory.GetAllCollectionMetadata().Keys)
          factory.EvictCollection(role);
  }


  public bool IsReusable { get { return false; } }

}

Subscribe to the latest updates

Thank you!

Сheck out latest blog posts: Show all

Or contact
a sales representative

Get a live
product demo

Let one of our product specialists create your account
and shape Targetprocess for your company needs.