private static void RemoveReverseMapping(Join <TKey> .Row mapping, JoinSide joinSide,
Dictionary <int, HashSet <int> > columnRowsToJoinRows)
{
if (joinSide == JoinSide.Left)
{
var leftRowsToJoinRow = columnRowsToJoinRows[mapping.LeftRowId.Value];
if (mapping.RowId.HasValue)
{
leftRowsToJoinRow.Remove(mapping.RowId.Value);
}
else
{
leftRowsToJoinRow.Clear();
}
if (leftRowsToJoinRow.Count == 0)
{
columnRowsToJoinRows.Remove(mapping.LeftRowId.Value);
}
}
else
{
var rightRowsToJoinRow = columnRowsToJoinRows[mapping.RightRowId.Value];
if (mapping.RowId.HasValue)
{
rightRowsToJoinRow.Remove(mapping.RowId.Value);
}
else
{
rightRowsToJoinRow.Clear();
}
if (rightRowsToJoinRow.Count == 0)
{
columnRowsToJoinRows.Remove(mapping.RightRowId.Value);
}
}
}
private static bool IsRowForOtherSide(Join <TKey> .Row row, JoinSide joinSide, int rowIndex)
{
return(joinSide == JoinSide.Left
? row.LeftRowId == rowIndex && row.RightRowId == null
: row.RightRowId == rowIndex && row.LeftRowId == null);
}
private static bool IsRow(Join <TKey> .Row row, JoinSide joinSide, int rowIndex)
{
return(joinSide == JoinSide.Left ? row.LeftRowId == rowIndex : row.RightRowId == rowIndex);
}
private int GetOtherSideIndex(Join <TKey> .Row row, JoinSide joinSide)
{
return(joinSide == JoinSide.Left ? row.RightRowId.GetValueOrDefault(-1) : row.LeftRowId.GetValueOrDefault(-1));
}
