~drizzle-trunk/drizzle/development

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

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

 *

 *  Copyright (C) 2009 Sun Microsystems, Inc.

 *

 *  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 <drizzled/show.h>

#include <drizzled/session.h>

#include <drizzled/statement/drop_schema.h>

#include <drizzled/plugin/event_observer.h>

#include <drizzled/schema.h>

#include <string>

using namespace std;

namespace drizzled

{

bool statement::DropSchema::execute()

{

  if (getSession()->inTransaction())

  {

    my_error(ER_TRANSACTIONAL_DDL_NOT_SUPPORTED, MYF(0));

    return true;

  }

  identifier::Schema schema_identifier(std::string(lex().name.str, lex().name.length));

  if (not schema::check(*getSession(), schema_identifier))

  {

    my_error(ER_WRONG_DB_NAME, schema_identifier);

    return false;

  }

  if (getSession()->inTransaction())

  {

    my_message(ER_LOCK_OR_ACTIVE_TRANSACTION, 

        ER(ER_LOCK_OR_ACTIVE_TRANSACTION), 

        MYF(0));

    return true;

  }

  bool res = true;

  std::string path;

  schema_identifier.getSQLPath(path);

  if (unlikely(plugin::EventObserver::beforeDropDatabase(*getSession(), path))) 

  {

    my_error(ER_EVENT_OBSERVER_PLUGIN, schema_identifier);

  }

  else

  {

    res= schema::drop(*getSession(), schema_identifier, drop_if_exists);

    if (unlikely(plugin::EventObserver::afterDropDatabase(*getSession(), path, res)))

    {

      my_error(ER_EVENT_OBSERVER_PLUGIN, MYF(0), path.c_str());

      res = false;

    }

  }

  return res;

}

} /* namespace drizzled */