public NamedColumnProjection(String[] names,boolean include){
  m_names=new HashSet();
  for (int i=0; i < names.length; ++i)   m_names.add(names[i]);
  m_include=include;
}

public NamedColumnProjection ( String [ ] names , boolean include ) { m_names = new HashSet ( ) ; for ( int i = 0 ; i < names . length ; ++ i ) m_names . add ( names [ i ] ) ; m_include = include ; }
create a new namedcolumnprojection .
