public boolean isFunctionColumn(String columnName){
  if (columnName == null || m_functions.size() == 0)   return false;
  for (int i=0; i < m_functions.size(); i++) {
    String f=(String)m_functions.get(i);
    if (f.startsWith(columnName))     return true;
  }
  return false;
}

public boolean isFunctionColumn ( String columnName ) { if ( columnName == null || m_functions . size ( ) == 0 ) return false ; for ( int i = 0 ; i < m_functions . size ( ) ; i ++ ) { String f = ( String ) m_functions . get ( i ) ; if ( f . startsWith ( columnName ) ) return true ; } return false ; }
column has a function
