/// <summary>
/// Gets the index of the first message in this block that has a sequence token at or before the provided token
/// </summary>
/// <param name="token"></param>
/// <param name="comparer"></param>
/// <returns></returns>
public int GetIndexOfFirstMessageLessThanOrEqualTo(StreamSequenceToken token, ICacheDataComparer <TCachedMessage> comparer)
{
for (int i = writeIndex - 1; i >= readIndex; i--)
{
if (comparer.Compare(cachedMessages[i], token) <= 0)
{
return(i);
}
}
throw new ArgumentOutOfRangeException("token");
}
public bool TryFindNextMessage(int start, IStreamIdentity streamIdentity, ICacheDataComparer <TCachedMessage> comparer, out int index)
{
if (start < readIndex)
{
throw new ArgumentOutOfRangeException("start");
}
for (int i = start; i < writeIndex; i++)
{
if (comparer.Compare(cachedMessages[i], streamIdentity) == 0)
{
index = i;
return(true);
}
}
index = writeIndex - 1;
return(false);
}
/// <summary>
/// Compare a cached message with a sequence token to determine if it message is before or after the token
/// </summary>
/// <param name="cachedMessage"></param>
/// <param name="comparer"></param>
/// <param name="streamToken"></param>
/// <returns></returns>
public static int Compare <TCachedMessage>(this ICacheDataComparer <TCachedMessage> comparer, StreamSequenceToken streamToken, TCachedMessage cachedMessage)
{
return(0 - comparer.Compare(cachedMessage, streamToken));
}
public static int Compare <TCachedMessage>(this ICacheDataComparer <TCachedMessage> comparer, IStreamIdentity streamIdentity, TCachedMessage cachedMessage)
{
return(0 - comparer.Compare(cachedMessage, streamIdentity));
}
