/// <inheritdoc/>
public void Remove(FeedUri feedUri)
{
#region Sanity checks
if (feedUri == null)
{
throw new ArgumentNullException("feedUri");
}
#endregion
// Remove from memory cache
string key = feedUri.Escape();
lock (_feedDictionary)
_feedDictionary.Remove(key);
// Remove from underlying cache
_backingCache.Remove(feedUri);
}
/// <summary>
/// Deletes this <see cref="Feed"/> from the <see cref="IFeedCache"/> it is located in.
/// </summary>
/// <param name="handler">A callback object used when the the user needs to be asked questions or informed about IO tasks.</param>
/// <exception cref="KeyNotFoundException">No matching feed could be found in the <see cref="IFeedCache"/>.</exception>
/// <exception cref="IOException">The feed could not be deleted.</exception>
/// <exception cref="UnauthorizedAccessException">Write access to the cache is not permitted.</exception>
public override void Delete(ITaskHandler handler)
{
_cache.Remove(_feed.Uri);
}