~drizzle-trunk/drizzle/development

/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2010 Brian Aker

 *

 *  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 St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include <config.h>

#include <plugin/show_dictionary/dictionary.h>

#include <drizzled/identifier.h>

#include <drizzled/message.h>

#include <drizzled/message/statement_transform.h>

#include <google/protobuf/text_format.h>

#include <drizzled/plugin/authorization.h>

#include <string>

using namespace std;

using namespace drizzled;

ShowCreateTable::ShowCreateTable() :

  show_dictionary::Show("TABLE_SQL_DEFINITION")

{

  add_field("TABLE_NAME", plugin::TableFunction::STRING, MAXIMUM_IDENTIFIER_LENGTH, false);

  add_field("TABLE_SQL_DEFINITION", plugin::TableFunction::STRING, TABLE_FUNCTION_BLOB_SIZE, false);

}

ShowCreateTable::Generator::Generator(Field **arg) :

  show_dictionary::Show::Generator(arg),

  is_primed(false)

{

  if (not isShowQuery())

   return;

  statement::Show& select= static_cast<statement::Show&>(statement());

  if (not select.getShowTable().empty() && not select.getShowSchema().empty())

  {

    identifier::Table identifier(select.getShowSchema(), select.getShowTable());

    if (not plugin::Authorization::isAuthorized(*getSession().user(),

                                            identifier, false))

    {

      drizzled::error::access(*getSession().user(), identifier);

      return;

    }

    table_message= plugin::StorageEngine::getTableMessage(getSession(),

                                                          identifier);

    if (table_message)

      is_primed= true;

    else

      my_error(ER_BAD_TABLE_ERROR, identifier);

  }

}

bool ShowCreateTable::Generator::populate()

{

  enum drizzled::message::TransformSqlError transform_err;

  if (not is_primed)

    return false;

  std::string create_sql;

  transform_err= message::transformTableDefinitionToSql(*table_message,

                                                        create_sql,

                                                        message::DRIZZLE,

                                                        false);

  if (transform_err != drizzled::message::NONE)

  {

    return false;

  }

  push(table_message->name());

  push(create_sql);

  is_primed= false;

  return true;

}