public OrderByQueryPartitionRangePageAsyncEnumerator(
IQueryDataSource queryDataSource,
SqlQuerySpec sqlQuerySpec,
FeedRangeInternal feedRange,
PartitionKey?partitionKey,
int pageSize,
string filter,
CancellationToken cancellationToken,
QueryState state = default)
: base(feedRange, cancellationToken, state)
{
this.StartOfPageState = state;
this.innerEnumerator = new InnerEnumerator(
queryDataSource,
sqlQuerySpec,
feedRange,
partitionKey,
pageSize,
filter,
cancellationToken,
state);
this.bufferedEnumerator = new BufferedPartitionRangePageAsyncEnumerator <OrderByQueryPage, QueryState>(
this.innerEnumerator,
cancellationToken);
}
private bool _MoveNext()
{
if (_joinEnumerator.MoveNext())
{
Current = _joinEnumerator.Current;
return true;
}
Current = _firstValue;
_firstValue = default;
_moveNext = () =>
{
if (InnerEnumerator.MoveNext())
{
Current = InnerEnumerator.Current;
return true;
}
return false;
};
return true;
}
/// <inheritdoc/>
public void Reset()
{
InnerEnumerator.Reset();
Index = 0;
_endOfSequence = false;
}
protected override void ResetOverride()
{
base.ResetOverride();
if (_resetInnerEnumerator)
{
InnerEnumerator.Reset();
}
}
private void _MoveNext()
{
if (InnerEnumerator.MoveNext())
_updateEnumerator();
_completed = true;
_subEnumerator = null;
}
private bool _MoveNext()
{
if (InnerEnumerator.MoveNext())
{
_updateEnumerator();
return true;
}
_subEnumerator = null;
return false;
}
private void InitDelegate() => _moveNext = () =>
{
if (InnerEnumerator.MoveNext())
{
_firstValue = InnerEnumerator.Current;
_moveNext = () => _MoveNext();
return _MoveNext();
}
else
return false;
};
/// <inheritdoc/>
public bool MoveNext()
{
bool success = InnerEnumerator.MoveNext();
if (success)
{
Index++;
}
else
{
_endOfSequence = true;
}
return(success);
}
private bool _MoveNext()
{
while (InnerEnumerator.MoveNext())
{
if ((_currentEnumerator = InnerEnumerator.Current.GetEnumerator()).MoveNext())
{
_moveNext = () => _currentEnumerator.MoveNext() || _MoveNext();
return(true);
}
}
_moveNext = null;
return(false);
}
private bool _MoveNext()
{
if (_joinEnumerator.MoveNext())
{
#if !WinCopies3
Current
#else
_current
#endif
= _joinEnumerator.Current;
return true;
}
#if !WinCopies3
Current
#else
_current
#endif
= _firstValue;
_firstValue = default;
_moveNext = () =>
{
if (InnerEnumerator.MoveNext())
{
#if !WinCopies3
Current
#else
_current
#endif
= InnerEnumerator.Current;
return true;
}
return false;
};
return true;
}
public WMIItemInfoEnumerator(IEnumerable <ManagementBaseObject> enumerable, bool resetEnumerator, WMIItemType itemWMIItemType, bool catchExceptions) : base(enumerable)
{
_resetInnerEnumerator = resetEnumerator;
ItemWMIItemType = itemWMIItemType;
if (catchExceptions)
{
_func = () =>
{
while (InnerEnumerator.MoveNext())
{
try
{
_MoveNext();
return(true);
}
catch (Exception) { }
}
return(false);
}
}
;
else
{
_func = () =>
{
if (InnerEnumerator.MoveNext())
{
_MoveNext();
return(true);
}
return(false);
}
};
}
public EndpointCollection(Int32 width, IEnumerable <T> endpoints = null)
{
if (width <= 0)
{
throw new ArgumentException("The items count of collection must large than 0.");
}
_endpoints = new T[width];
_enumerator = new InnerEnumerator(ref _endpoints);
for (var i = 0; i < width; i++)
{
if (endpoints != null && i < endpoints.Count() && endpoints.ElementAtOrDefault(i) != null)
{
_endpoints[i] = endpoints.ElementAt(i);
}
else
{
_endpoints[i] = new T();
}
}
}
public OrderByQueryPartitionRangePageAsyncEnumerator(
IQueryDataSource queryDataSource,
SqlQuerySpec sqlQuerySpec,
FeedRangeState <QueryState> feedRangeState,
PartitionKey?partitionKey,
QueryPaginationOptions queryPaginationOptions,
string filter,
CancellationToken cancellationToken)
: base(feedRangeState, cancellationToken)
{
this.StartOfPageState = feedRangeState.State;
this.innerEnumerator = new InnerEnumerator(
queryDataSource,
sqlQuerySpec,
feedRangeState,
partitionKey,
queryPaginationOptions,
filter,
cancellationToken);
this.bufferedEnumerator = new BufferedPartitionRangePageAsyncEnumerator <OrderByQueryPage, QueryState>(
this.innerEnumerator,
cancellationToken);
}
/// <inheritdoc />
public void Dispose()
{
InnerEnumerator.Dispose();
}
public void Reset()
{
InnerEnumerator.Reset();
}
public bool MoveNext()
{
return(InnerEnumerator.MoveNext());
}
