~drizzle-trunk/drizzle/development

/*

  Copyright (C) 2010 Stewart Smith

  This program is free software; you can redistribute it and/or

  modify it under the terms of the GNU General Public License

  as published by the Free Software Foundation; either version 2

  of the License, or (at your option) any later version.

  This program 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

  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License

  along with this program; if not, write to the Free Software

  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

*/

#include "config.h"

#include "drizzled/plugin/table_function.h"

#include <haildb.h>

#include "config_table_function.h"

using namespace std;

using namespace drizzled;

class LibInnoDBConfigTool : public drizzled::plugin::TableFunction

{

public:

  LibInnoDBConfigTool();

  LibInnoDBConfigTool(const char *table_arg) :

    drizzled::plugin::TableFunction("data_dictionary", table_arg)

  { }

  ~LibInnoDBConfigTool() {}

  class Generator : public drizzled::plugin::TableFunction::Generator

  {

  private:

    const char **names;

    uint32_t names_count;

    uint32_t names_next;

  public:

    Generator(drizzled::Field **arg);

    ~Generator();

    bool populate();

  };

  LibInnoDBConfigTool::Generator *generator(drizzled::Field **arg)

  {

    return new Generator(arg);

  }

};

LibInnoDBConfigTool::LibInnoDBConfigTool() :

  plugin::TableFunction("DATA_DICTIONARY", "HAILDB_CONFIGURATION")

{

  add_field("NAME");

  add_field("TYPE");

  add_field("VALUE", plugin::TableFunction::STRING, 64, true);

}

LibInnoDBConfigTool::Generator::Generator(Field **arg) :

  plugin::TableFunction::Generator(arg),

  names_next(0)

{

  ib_err_t err= ib_cfg_get_all(&names, &names_count);

  assert(err == DB_SUCCESS);

}

LibInnoDBConfigTool::Generator::~Generator()

{

  free(names);

}

bool LibInnoDBConfigTool::Generator::populate()

{

  if (names_next < names_count)

  {

    const char* config_name= names[names_next];

    push(config_name);

    ib_cfg_type_t type;

    ib_err_t err= ib_cfg_var_get_type(config_name, &type);

    assert(err == DB_SUCCESS);

    void *value_ptr;

    err= ib_cfg_get(config_name, &value_ptr);

    assert(err == DB_SUCCESS);

    switch(type)

    {

    case IB_CFG_IBOOL:

    {

      push("BOOL");

      ib_bool_t value= (ib_bool_t)value_ptr;

      if (value == IB_FALSE)

        push("false");

      else

        push("true");

      break;

    }

    case IB_CFG_ULINT:

    {

      push("ULINT");

      push((uint64_t)value_ptr);

      break;

    }

    case IB_CFG_ULONG:

    {

      push("ULONG");

      push((uint64_t)value_ptr);

      break;

    }

    case IB_CFG_TEXT:

    {

      push("TEXT");

      if (value_ptr == NULL)

        push();

      else

        push((char*)value_ptr);

      break;

    }

    case IB_CFG_CB:

      push("CALLBACK");

      if (value_ptr == NULL)

        push();

      else

        push("Is set");

      break;

    default:

      push("UNKNOWN");

      push("UNKNOWN");

      break;

    }

    names_next++;

    return true;

  }

  return false; // No more rows

}

static LibInnoDBConfigTool *config_tool;

int config_table_function_initialize(drizzled::module::Context &context)

{

  config_tool= new(std::nothrow)LibInnoDBConfigTool();

  context.add(config_tool);

  return 0;

}