本文整理汇总了C#中WriteBatch.TryGetValue方法的典型用法代码示例。如果您正苦于以下问题：C# WriteBatch.TryGetValue方法的具体用法？C# WriteBatch.TryGetValue怎么用？C# WriteBatch.TryGetValue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WriteBatch的用法示例。
在下文中一共展示了WriteBatch.TryGetValue方法的3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: Contains
public bool Contains(string treeName, Slice key, out ushort? version, WriteBatch writeBatch = null)
{
if (writeBatch != null)
{
WriteBatch.BatchOperationType operationType;
Stream stream;
if (writeBatch.TryGetValue(treeName, key, out stream, out version, out operationType))
{
switch (operationType)
{
case WriteBatch.BatchOperationType.Add:
return true;
case WriteBatch.BatchOperationType.Delete:
return false;
default:
throw new ArgumentOutOfRangeException(operationType.ToString());
}
}
}
var tree = GetTree(treeName);
var readVersion = tree.ReadVersion(key);
var exists = readVersion > 0;
version = exists ? (ushort?)readVersion : null;
return exists;
}示例2: Read
public ReadResult Read(string treeName, Slice key, WriteBatch writeBatch = null)
{
Tree tree = null;
if (writeBatch != null)
{
WriteBatch.BatchOperationType operationType;
Stream stream;
ushort? version;
if (writeBatch.TryGetValue(treeName, key, out stream, out version, out operationType))
{
if (!version.HasValue)
tree = GetTree(treeName);
switch (operationType)
{
case WriteBatch.BatchOperationType.Add:
{
var reader = new ValueReader(stream);
return new ReadResult(reader, version.HasValue ? (ushort)(version.Value + 1) : tree.ReadVersion(key));
}
case WriteBatch.BatchOperationType.Delete:
return null;
}
}
}
if (tree == null)
tree = GetTree(treeName);
return tree.Read(key);
}示例3: ReadVersion
public ushort ReadVersion(string treeName, Slice key, WriteBatch writeBatch = null)
{
if (writeBatch != null)
{
WriteBatch.BatchOperationType operationType;
Stream stream;
ushort? version;
if (writeBatch.TryGetValue(treeName, key, out stream, out version, out operationType) && version.HasValue)
{
switch (operationType)
{
case WriteBatch.BatchOperationType.Add:
case WriteBatch.BatchOperationType.Delete:
return (ushort)(version.Value + 1);
}
}
}
var tree = GetTree(treeName);
return tree.ReadVersion(key);
}