void ZkDataContextOnAfterEntityChange(object sender, ZkDataContext.EntityEntry dbEntityEntry)
{
// Invalidates cache on entity changes
var post = dbEntityEntry.Entity as ForumPost;
if (dbEntityEntry.State != EntityState.Added && dbEntityEntry.State != EntityState.Modified)
{
return;
}
if (post != null)
{
MvcHtmlString dummy;
cache.TryRemove(GetKey(post, true), out dummy);
cache.TryRemove(GetKey(post, false), out dummy);
}
else
{
var news = dbEntityEntry.Entity as News;
if (news != null)
{
MvcHtmlString dummy;
cache.TryRemove(GetKey(news, true), out dummy);
cache.TryRemove(GetKey(news, false), out dummy);
}
}
}
void ZkDataContextOnAfterEntityChange(object sender, ZkDataContext.EntityEntry dbEntityEntry)
{
var post = dbEntityEntry.Entity as ForumPost;
if (post != null && (dbEntityEntry.State == EntityState.Added || dbEntityEntry.State == EntityState.Modified))
{
IndexPost(post);
}
}
private void ZkDataContextOnAfterEntityChange(object sender, ZkDataContext.EntityEntry entityEntry)
{
if (entityEntry.State == EntityState.Deleted || entityEntry.State == EntityState.Unchanged)
{
return;
}
var entity = entityEntry.Entity;
if (entity is ForumPost && entityEntry.State == EntityState.Added)
{
// forum post got added, distribute to connected users
var post = (ForumPost)entity;
var changedThreadID = post.ForumThreadID;
using (var db = new ZkDataContext())
{
var t = db.ForumThreads.Find(changedThreadID);
if (t != null)
{
var item = new ForumItem()
{
Time = t.LastPost ?? t.Created,
Url = $"{GlobalConst.BaseSiteUrl}/Forum/Thread/{t.ForumThreadID}",
Header = t.Title,
IsRead = false
};
foreach (var user in server.ConnectedUsers.Values.Where(x => x != null && x.IsLoggedIn))
{
var list = GetCurrentForumList(user.User.AccountID);
var existing = list.ForumItems.FirstOrDefault(x => x.Url == item.Url);
if (existing != null)
{
existing.Header = item.Header;
existing.IsRead = post.AuthorAccountID == user.User.AccountID;
existing.Time = item.Time;
}
else
{
list.ForumItems.Add(item);
}
list.ForumItems = list.ForumItems.OrderByDescending(x => x.Time).ToList();
user.SendCommand(list);
}
}
}
}
else if (entity is ForumThreadLastRead)
{
// someone read some thread
var changedAccountID = ((ForumThreadLastRead)entity).AccountID;
var readThreadID = ((ForumThreadLastRead)entity).ForumThreadID;
var conus = server.ConnectedUsers.Values.FirstOrDefault(x => x != null && x.User.AccountID == changedAccountID && x.IsLoggedIn);
if (conus != null)
{
var list = GetCurrentForumList(changedAccountID);
if (list.ForumItems.Any(x => x.ThreadID == readThreadID)) // the thread is in top 10, update list
{
list = CachePrivateForumList(changedAccountID);
conus.SendCommand(list);
}
}
}
else if (entity is ForumThread)
{
var thread = (ForumThread)entity;
if (entityEntry.State == EntityState.Added) // thread added force refresh
{
CachePublicForumList();
}
else
{
var existing = cachedPublicForumList.ForumItems.FirstOrDefault(x => x.ThreadID == thread.ForumThreadID);
if (existing != null) // top 10 thread modified
{
if (existing.Time < thread.LastPost)
{
CachePublicForumList(); // it gotten a new post, update
}
}
else
{
if (thread.LastPost >= cachedPublicForumList.ForumItems.Min(x => (DateTime?)x.Time))
{
CachePublicForumList(); // its a modified post and its date belongs to top 10, update
}
}
}
}
}
