public void initMetaData(FrameBlock meta){
  if (meta == null || meta.getNumRows() <= 0)   return;
  for (int j=0; j < _colList.length; j++) {
    int colID=_colList[j];
    _rcdMaps.put(colID,meta.getRecodeMap(colID - 1));
  }
}

public void initMetaData ( FrameBlock meta ) { if ( meta == null || meta . getNumRows ( ) <= 0 ) return ; for ( int j = 0 ; j < _colList . length ; j ++ ) { int colID = _colList [ j ] ; _rcdMaps . put ( colID , meta . getRecodeMap ( colID - 1 ) ) ; } }
construct the recodemaps from the given input frame for all columns registered for recode .
