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table_delta.cc

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// Table Delta implementation -*- C++ -*-

// Copyright (C) 2001-2003 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 <table_delta.h>
#include <annotation_delta.h>

bool table_delta::apply(work_node& _x, undelta_base*& _u) const
{
  std::cerr << "Cannot directly apply a table_delta: convert missing!" <<
        std::endl;
  return false;
}

void table_delta::convert(work_node& _x, delta_base*& _d)
{
  std::vector<annotation> t_add;
  for(t_ctr::const_iterator _tl = t_new.begin(); _tl != t_new.end(); ++_tl)
  {
    const t_line& tl(*_tl);
    vdbl::standard_table* ptb = (vdbl::standard_table*)
                _x.get_database_ptr()->get_table(tl.first, _x.get_dbuserid());
    if(ptb == NULL)
    {
      _x.get_database_ptr()->create_table(tl.first, _x.get_dbuserid());
      ptb = (vdbl::standard_table*)
                _x.get_database_ptr()->get_table(tl.first, _x.get_dbuserid());
      if(ptb == NULL)
        throw "Database inconsistency: Programming Error!";
      this->create_table(_x, ptb, tl.first);
      if(ptb == NULL)
        throw "Create table failed: Programming Error!";
    }
    vdbl::tableid tbi =
               _x.get_database_ptr()->get_tableid(tl.first, _x.get_dbuserid());
    vdbl::rowid _ri;
    if(!ptb->insert_row(tl.second, _ri))
      throw "Database inconsistency: Programming error!";
    t_add.push_back(annotation(tbi,_ri));
  }
  _x.keep(t_add);
  _d = (delta_base*) new annotation_delta(get_action(), t_add, t_rm);
}

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