public NamedColumnProjection(String name,boolean include){
  m_names=new HashSet();
  m_names.add(name);
  m_include=include;
}

public NamedColumnProjection ( String name , boolean include ) { m_names = new HashSet ( ) ; m_names . add ( name ) ; m_include = include ; }
create a new namedcolumnprojection .
