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comp_hook.cc

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// Search Node computation hook implementation -*- C++ -*-

// 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.

#include <search_node.h>
#include <comp_hook.h>

template <class _CI>
bool work_node_comp_hook::_init_column(vdbl::standard_table& stable,
                                       const std::string& colname,
                                       const _CI& c)
{
  bool ret = stable.add_col(colname, vdbl::typed_col<_CI>(c),
                             vdbl::colflags(true));
  if(ret)
    __managed_cols.push_back(colname);
  return ret;
}

bool work_node_comp_hook::_drop_columns(vdbl::standard_table& stable)
{
  bool ret(true);
  for(std::list<std::string>::iterator __x = __managed_cols.begin();
      __x != __managed_cols.end(); ++__x)
    ret = stable.drop_col(*__x) || ret;
  return ret;
}

search_node_id work_node_comp_hook::node_id(const work_node& wn) const
        { return wn.node_id(); }

search_node_relation work_node_comp_hook::parent_relation(const work_node& wn)
        const { return wn.parent_relation(); }

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