本文整理汇总了C#中StreamSequenceToken.Older方法的典型用法代码示例。如果您正苦于以下问题：C# StreamSequenceToken.Older方法的具体用法？C# StreamSequenceToken.Older怎么用？C# StreamSequenceToken.Older使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类StreamSequenceToken的用法示例。
在下文中一共展示了StreamSequenceToken.Older方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: FindNodeBySequenceToken
private LinkedListNode<TimedQueueCacheItem> FindNodeBySequenceToken(StreamSequenceToken sequenceToken)
{
// First we find a bucket where the node is in
var sequenceBucket =
_cacheCursorHistogram.First(
bucket =>
!sequenceToken.Newer(bucket.NewestMember.Value.SequenceToken) &&
!sequenceToken.Older(bucket.OldestMember.Value.SequenceToken));
// Now that we have the bucket, we iterate on the members there starting from the newest in the bucket
LinkedListNode<TimedQueueCacheItem> node = sequenceBucket.NewestMember;
while (node != null && node.Value.SequenceToken.Newer(sequenceToken))
{
// did we get to the end?
// node is the last message in the cache
if (node.Next == null)
break;
// if sequenceId is between the two, take the lower
if (node.Next.Value.SequenceToken.Older(sequenceToken))
{
node = node.Next;
break;
}
node = node.Next;
}
return node;
}示例2: InitializeCursor
internal void InitializeCursor(SimpleQueueCacheCursor cursor, StreamSequenceToken sequenceToken, bool enforceSequenceToken)
{
Log(logger, "InitializeCursor: {0} to sequenceToken {1}", cursor, sequenceToken);
if (cachedMessages.Count == 0) // nothing in cache
{
StreamSequenceToken tokenToReset = sequenceToken ?? (lastSequenceTokenAddedToCache != null ? ((EventSequenceToken)lastSequenceTokenAddedToCache).NextSequenceNumber() : null);
ResetCursor(cursor, tokenToReset);
return;
}
// if offset is not set, iterate from newest (first) message in cache, but not including the irst message itself
if (sequenceToken == null)
{
StreamSequenceToken tokenToReset = lastSequenceTokenAddedToCache != null ? ((EventSequenceToken)lastSequenceTokenAddedToCache).NextSequenceNumber() : null;
ResetCursor(cursor, tokenToReset);
return;
}
if (sequenceToken.Newer(cachedMessages.First.Value.SequenceToken)) // sequenceId is too new to be in cache
{
ResetCursor(cursor, sequenceToken);
return;
}
LinkedListNode<SimpleQueueCacheItem> lastMessage = cachedMessages.Last;
// Check to see if offset is too old to be in cache
if (sequenceToken.Older(lastMessage.Value.SequenceToken))
{
if (enforceSequenceToken)
{
// throw cache miss exception
throw new QueueCacheMissException(sequenceToken, cachedMessages.Last.Value.SequenceToken, cachedMessages.First.Value.SequenceToken);
}
sequenceToken = lastMessage.Value.SequenceToken;
}
// Now the requested sequenceToken is set and is also within the limits of the cache.
// Find first message at or below offset
// Events are ordered from newest to oldest, so iterate from start of list until we hit a node at a previous offset, or the end.
LinkedListNode<SimpleQueueCacheItem> node = cachedMessages.First;
while (node != null && node.Value.SequenceToken.Newer(sequenceToken))
{
// did we get to the end?
if (node.Next == null) // node is the last message
break;
// if sequenceId is between the two, take the higher
if (node.Next.Value.SequenceToken.Older(sequenceToken))
break;
node = node.Next;
}
// return cursor from start.
SetCursor(cursor, node);
}