/// <inheritdoc />
public async Task <DataPersisterUpdateResult <T> > Update(CancellationToken ct, DataPersisterUpdaterWithContext <T> updater)
{
using (await _updateGate.LockAsync(ct))
{
var result = await _inner.Update(ct, updater);
if (result.IsUpdated)
{
_update.OnNext(result);
}
return(result);
}
}
/// <inheritdoc />
public async Task <DataPersisterUpdateResult <T> > Update(CancellationToken ct, DataPersisterUpdaterWithContext <T> updater)
{
var innerUpdated = false;
var result = await _inner.Update(
ct,
context =>
{
innerUpdated = false;
var adjustedContext = GetAdjustedReadResult(context);
var innerContext = new DataPersisterTransactionContext <T>(adjustedContext);
updater(innerContext);
if (innerContext.IsCommitted)
{
innerUpdated = true;
if (innerContext.IsRemoved)
{
context.RemoveAndCommit();
}
else
{
var value = innerContext.CommittedValue;
if (CheckMode(DefaultValueDataPersisterDecoratorMode.WriteCustomDefaultToEmpty) && _comparer.Equals(value, _customDefaultValue))
{
context.RemoveAndCommit();
}
else if (CheckMode(DefaultValueDataPersisterDecoratorMode.WriteDefaultToEmpty) && _comparer.Equals(value, default(T)))
{
context.RemoveAndCommit();
}
else
{
context.Commit(value);
}
}
}
}
);
var adjustedResult = GetAdjustedReadResult(result);
return(new DataPersisterUpdateResult <T>(adjustedResult, innerUpdated || result.IsUpdated));
}