private void UpdateStreamDelete(StreamUpdate <T> update)
{
// Find the item in the cache, it must exist.
if (!this.data.Remove(update.Message))
{
throw new ArgumentException("The cache does not contain a message with the requested originating time");
}
}
private void UpdateStreamAdd(StreamUpdate <T> update)
{
if (this.data.FirstOrDefault(m => m.OriginatingTime == update.Message.OriginatingTime) != default)
{
throw new ArgumentException("The cache already contains a message with the requested originating time");
}
this.data.Add(update.Message);
}
private void UpdateStreamReplace(StreamUpdate <T> update)
{
// Get the old message, it must exist.
Message <T> oldMessage = this.data.FirstOrDefault(m => m.OriginatingTime == update.Message.OriginatingTime);
if (oldMessage == default)
{
throw new ArgumentException("The cache does not contain a message with the requested originating time");
}
// Remove the old message
this.data.Remove(oldMessage);
// Insert the new message
this.UpdateStreamAdd(update);
}
/// <summary>
/// Initializes a new instance of the <see cref="StreamUpdateWithView{T}"/> class.
/// </summary>
/// <param name="streamUpdate">An existing stream update to convert to a stream update with view.</param>
/// <param name="view">The view of the data cache spanning the duration of the update.</param>
public StreamUpdateWithView(StreamUpdate <T> streamUpdate, ObservableKeyedCache <DateTime, Message <T> > .ObservableKeyedView view)
: base(streamUpdate.UpdateType, streamUpdate.Message)
{
this.View = view;
}