// Change
protected override bool InternalChange(Program program, IRow oldRow, IRow newRow, BitArray valueFlags, string columnName)
{
if (PropagateChange)
{
// select the current row from the base node using the given row
IRow sourceRow = new Row(program.ValueManager, SourceNode.DataType.RowType);
try
{
newRow.CopyTo(sourceRow);
IRow currentRow = null;
if (!program.ServerProcess.ServerSession.Server.IsEngine)
{
currentRow = SourceNode.Select(program, sourceRow);
}
try
{
if (currentRow == null)
{
currentRow = new Row(program.ValueManager, SourceNode.DataType.RowType);
}
newRow.CopyTo(currentRow);
BitArray localValueFlags = valueFlags != null ? new BitArray(currentRow.DataType.Columns.Count) : null;
if (localValueFlags != null)
{
for (int index = 0; index < localValueFlags.Length; index++)
{
int rowIndex = newRow.DataType.Columns.IndexOfName(currentRow.DataType.Columns[index].Name);
localValueFlags[index] = rowIndex >= 0 ? valueFlags[rowIndex] : false;
}
}
bool changed = SourceNode.Change(program, oldRow, currentRow, localValueFlags, columnName);
if (changed)
{
currentRow.CopyTo(newRow);
}
return(changed);
}
finally
{
currentRow.Dispose();
}
}
finally
{
sourceRow.Dispose();
}
}
return(false);
}