(DDColumnDependableFinder) finder;
FormatableBitSet oldColumnBitMap =
new FormatableBitSet(colFinder.getColumnBitMap());
FormatableBitSet newColumnBitMap =
new FormatableBitSet(oldColumnBitMap);
newColumnBitMap.clear();
int bitLen = oldColumnBitMap.getLength();
for (int i = 0; i < bitLen; i++)
{
if (i < droppedColumnPosition && oldColumnBitMap.isSet(i))
newColumnBitMap.set(i);