/// <inheritdoc />
public void Fill <T>(IColumnDescriptor <T> column, T value, int destinationIndex, int length)
{
if (!_columns.Contains(column))
{
throw new NoSuchColumnException(column);
}
_inner.Fill(column, value, destinationIndex, length);
}
private bool TryGetEntriesContiguous(LogSourceSection sourceSection, ILogBuffer destination, int destinationIndex, out IReadOnlyList <LogSourceSection> accessedPageBoundaries)
{
bool fullyRead = true;
var sourceSectionEndIndex = Math.Min((int)(sourceSection.Index + sourceSection.Count), _sourceCount);
var numEntriesRead = 0;
var tmpAccessedPageBoundaries = new List <LogSourceSection>();
for (LogLineIndex i = sourceSection.Index; i < sourceSectionEndIndex;)
{
var pageIndex = GetPageIndex(i);
var remainingPageCount = (pageIndex + 1) * _pageSize - i;
var count = Math.Min(remainingPageCount, sourceSectionEndIndex - i);
var page = TryGetPage(pageIndex);
if (page != null)
{
fullyRead &= page.TryRead(i, count, destination, destinationIndex + numEntriesRead, fullyRead);
tmpAccessedPageBoundaries.Add(page.Section);
}
else
{
destination.FillDefault(destinationIndex + numEntriesRead, count);
if (destination.Contains(PageBufferedLogSource.RetrievalState))
{
destination.Fill(PageBufferedLogSource.RetrievalState, RetrievalState.NotCached, destinationIndex + numEntriesRead, count);
}
fullyRead = false;
tmpAccessedPageBoundaries.Add(GetSectionForPage(pageIndex));
}
numEntriesRead += count;
i += count;
}
if (numEntriesRead < sourceSection.Count)
{
var start = destinationIndex + numEntriesRead;
destination.FillDefault(start, sourceSection.Count - numEntriesRead);
fullyRead = false;
}
accessedPageBoundaries = tmpAccessedPageBoundaries;
return(fullyRead);
}
private bool TryGetEntriesSegmented(IReadOnlyList <LogLineIndex> sourceIndices, ILogBuffer destination, int destinationStartIndex, out IReadOnlyList <LogSourceSection> accessedPageBoundaries)
{
var tmpAccessedPageBoundaries = new List <LogSourceSection>();
bool fullyRead = true;
for (int i = 0; i < sourceIndices.Count; ++i)
{
var sourceIndex = sourceIndices[i];
var destinationIndex = destinationStartIndex + i;
if (sourceIndex.IsValid)
{
var pageIndex = GetPageIndex(sourceIndex);
var page = TryGetPage(pageIndex);
if (page != null)
{
fullyRead &= page.TryRead(sourceIndex, 1, destination, destinationIndex, fullyRead);
tmpAccessedPageBoundaries.Add(page.Section);
}
else
{
destination.FillDefault(destinationIndex, 1);
if (destination.Contains(PageBufferedLogSource.RetrievalState))
{
var state = sourceIndex >= _sourceCount
? RetrievalState.NotInSource
: RetrievalState.NotCached;
destination.Fill(PageBufferedLogSource.RetrievalState, state, destinationIndex, 1);
}
fullyRead = false;
tmpAccessedPageBoundaries.Add(GetSectionForPage(pageIndex));
}
}
else
{
destination.FillDefault(destinationIndex, 1);
}
}
accessedPageBoundaries = tmpAccessedPageBoundaries;
return(fullyRead);
}