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C# IFdbTransaction.AddReadConflictKey方法代码示例

本文整理汇总了C#中IFdbTransaction.AddReadConflictKey方法的典型用法代码示例。如果您正苦于以下问题:C# IFdbTransaction.AddReadConflictKey方法的具体用法?C# IFdbTransaction.AddReadConflictKey怎么用?C# IFdbTransaction.AddReadConflictKey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IFdbTransaction的用法示例。


在下文中一共展示了IFdbTransaction.AddReadConflictKey方法的1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: GetPreviousNodeAsync

		private async Task<Slice> GetPreviousNodeAsync(IFdbTransaction trans, int level, Slice key)
		{
			// GetPreviousNodeAsync looks for the previous node on a level, but "doesn't care"
			// about the contents of that node. It therefore uses a non-isolated (snaphot)
			// read and explicitly adds a conflict range that is exclusive of the actual,
			// found previous node. This allows an increment of that node not to trigger
			// a transaction conflict. We also add a conflict key on the found previous
			// key in level 0. This allows detection of erasures.

			var k = this.Subspace.Pack(level, key);
			//Console.WriteLine(k);
			//Console.WriteLine("GetPreviousNode(" + level + ", " + key + ")");
			//Console.WriteLine(FdbKeySelector.LastLessThan(k) + " <= x < " + FdbKeySelector.FirstGreaterOrEqual(k));
			var kv = await trans
				.Snapshot
				.GetRange(
					FdbKeySelector.LastLessThan(k),
					FdbKeySelector.FirstGreaterOrEqual(k)
				)
				.FirstAsync()
				.ConfigureAwait(false);
			//Console.WriteLine("Found " + FdbKey.Dump(kv.Key));

			var prevKey = this.Subspace.UnpackLast<Slice>(kv.Key);
			trans.AddReadConflictRange(kv.Key + FdbKey.MinValue, k);
			trans.AddReadConflictKey(this.Subspace.Pack(0, prevKey));
			return prevKey;
		}
开发者ID:BedeGaming,项目名称:foundationdb-dotnet-client,代码行数:28,代码来源:FdbRankedSet.cs


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