internal async Task SetupLevelsAsync(IFdbTransaction trans)
{
var ks = Enumerable.Range(0, MAX_LEVELS)
.Select((l) => this.Subspace.Encode(l, Slice.Empty))
.ToList();
var res = await trans.GetValuesAsync(ks).ConfigureAwait(false);
for (int l = 0; l < res.Length; l++)
{
if (res[l].IsNull)
{
trans.Set(ks[l], EncodeCount(0));
}
}
}
/// <summary>Swap the items at positions i1 and i2.</summary>
public async Task SwapAsync([NotNull] IFdbTransaction tr, long index1, long index2)
{
if (tr == null)
{
throw new ArgumentNullException("tr");
}
if (index1 < 0 || index2 < 0)
{
throw new IndexOutOfRangeException(String.Format("Indices ({0}, {1}) must be positive", index1, index2));
}
var k1 = GetKeyAt(index1);
var k2 = GetKeyAt(index2);
long currentSize = await ComputeSizeAsync(tr).ConfigureAwait(false);
if (index1 >= currentSize || index2 >= currentSize)
{
throw new IndexOutOfRangeException(String.Format("Indices ({0}, {1}) are out of range", index1, index2));
}
var vs = await tr.GetValuesAsync(new[] { k1, k2 }).ConfigureAwait(false);
var v1 = vs[0];
var v2 = vs[1];
if (!v2.IsNullOrEmpty)
{
tr.Set(k1, v2);
}
else if (v1.IsPresent && index1 < currentSize - 1)
{
tr.Clear(k1);
}
if (!v1.IsNullOrEmpty)
{
tr.Set(k2, v1);
}
else if (v2.IsPresent && index2 < currentSize - 1)
{
tr.Clear(k2);
}
}
private async Task SetupLevelsAsync(IFdbTransaction trans)
{
var ks = Enumerable.Range(0, MAX_LEVELS)
.Select((l) => this.Subspace.Pack(l, Slice.Empty))
.ToList();
var res = await trans.GetValuesAsync(ks).ConfigureAwait(false);
for (int l = 0; l < res.Length; l++)
{
//Console.WriteLine(ks[l]);
if (res[l].IsNull) trans.Set(ks[l], EncodeCount(0));
}
}
public virtual Task <Slice[]> GetValuesAsync(Slice[] keys)
{
ThrowIfDisposed();
return(m_transaction.GetValuesAsync(keys));
}
