private async Task <long> GetNextIndexAsync([NotNull] IFdbReadOnlyTransaction tr, IFdbDynamicSubspace subspace)
{
var range = subspace.Keys.ToRange();
var lastKey = await tr.GetKeyAsync(FdbKeySelector.LastLessThan(range.End)).ConfigureAwait(false);
if (lastKey < range.Begin)
{
return(0);
}
return(subspace.Keys.DecodeFirst <long>(lastKey) + 1);
}
private async Task <long> ComputeSizeAsync(IFdbReadOnlyTransaction tr)
{
Contract.Requires(tr != null);
var keyRange = this.Subspace.Keys.ToRange();
var lastKey = await tr.GetKeyAsync(KeySelector.LastLessOrEqual(keyRange.End)).ConfigureAwait(false);
if (lastKey < keyRange.Begin)
{
return(0);
}
return(this.Subspace.Keys.DecodeFirst <long>(lastKey) + 1);
}
public virtual Task <Slice> GetKeyAsync(KeySelector selector)
{
return(m_transaction.GetKeyAsync(selector));
}
