pfstar_hook.h

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// Search Node pf* value hook implementation -*- C++ -*-

// $Id: objbounds_hook.h 618 2008-05-05 13:59:12Z mihaly $
// Copyright (C) 2003 Hermann Schichl
//
// This file is part of the COCONUT API.  This library
// is free software; you can redistribute it and/or modify it under the
// terms of the Library GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// Library GNU General Public License for more details.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the Library GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the Library GNU General Public License.

#ifndef _PFSTAR_HOOK_H
#define _PFSTAR_HOOK_H

#include <comp_hook.h>
#include <pfstar.h>

namespace coco {


class pfstar_hook : public wnc_hook_base
{
public:
  pfstar_hook()
     : wnc_hook_base("pfstar")
    {}

  virtual ~pfstar_hook() {}

  pfstar_hook* new_copy() const
        { return new pfstar_hook(*this); }

  void operator()(const work_node& wn, dbt_row& dbr,
                  std::list<delta>* add_ds = NULL,
                  std::list<certificate>* add_cs = NULL) const {}

  bool init_columns(vdbl::standard_table& stable)
  {
    bool ret(true);

    vdbl::colid _l(stable.get_col_id("obj lowbound")),
          _w(stable.get_col_id("obj diameter"));
    if(_l == vdbl::colid() || _w == vdbl::colid())
      ret = false;
    else
    {
      ret = stable.add_col("pfstar", vdbl::method_col<calc_pf_star>(
                   calc_pf_star(_l, _w)),
                   vdbl::colflags(true));
    }
    return ret;
  }

  bool drop_columns(vdbl::standard_table& stable)
        { return _drop_columns(stable); }
};

} // namespace coco

#endif // _PFSTAR_HOOK_H

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