/// <summary>
/// Gets the db item length (in bytes).
/// </summary>
/// <param name="reference">Reference to the requested db item</param>
/// <returns>The length of requested db item</returns>
public long GetLength(DbItemReference reference)
{
if (!_pageManager.PageExists(reference.PageIndex))
{
return(0);
}
IPage page = _pageManager.FetchPage(reference.PageIndex);
var header = PageFormatter.GetPageHeader(page);
if (header.SizeRange == SizeRange.MultiPage)
{
return(PageFormatter.ReadMultipageItemLength(page));
}
return(PageFormatter.IsFixedSizeItemAllocated(page, reference.ItemIndex)
? PageFormatter.ReadFixedSizeItemLength(page, reference.ItemIndex)
: 0);
}
