public bool Update(Feed feed)
{
if (feed.Head != null)
{
var head = feed.Head;
feed.Head = null;
// This should munge things about appropriately...I think.
feed.SetHeadChunk(head);
}
return true;
}
public bool Update(Feed feed)
{
// Now, we've already added some articles, maybe.
// These have been added to the head chunk, which might be oversized.
// Let's say they haven't been added to feed.Articles.
var headChunk = feed.GetHeadChunk(_db);
_logger.DebugFormat("incoming feed has {0} saved chunks and {1} cached chunks already", feed.ChunkIds.Count, feed.CachedChunkCount);
while (headChunk.Articles.Count > MaxArticlesPerChunk)
{
_logger.InfoFormat("reshuffling chunks for feed {0}", feed);
var oldHead = headChunk;
headChunk = new Chunk();
feed.SetHeadChunk(headChunk);
headChunk.Articles = oldHead.Articles.OrderBy(x => x.PublishDate).Skip(MaxArticlesPerChunk).ToList();
oldHead.Articles = oldHead.Articles.OrderBy(x => x.PublishDate).Take(MaxArticlesPerChunk).ToList();
_logger.DebugFormat("old head has {0} articles; new has {1}", oldHead.Articles.Count, headChunk.Articles.Count);
}
feed.Save(_db);
// Okay, let's rebuild feed.Articles.
// This is loading way too much data...
feed.Articles.Clear();
foreach (var id in feed.ChunkIds)
{
var chunk = feed.GetChunk(id, _db);
if (chunk == null) {
_logger.WarnFormat("feed {0} missing chunk {1}", feed.Id, id);
continue;
}
feed.Articles.AddRange(chunk.Articles);
}
feed.Articles = feed.Articles.OrderByDescending(x => x.PublishDate).Take(MaxArticlesPerChunk).Reverse().ToList();
//feed.Articles = feed.ChunkIds.Select(x => feed.GetChunk(x, _db)).Where(x => x != null).SelectMany(x => x.Articles).OrderByDescending(x => x.PublishDate).Take(MaxArticlesPerChunk).Reverse().ToList();
feed.Save(_db);
_logger.DebugFormat("outgoing feed has {0} saved chunks", feed.ChunkIds.Count);
return true;
}