~drizzle-trunk/drizzle/development

/*

  *  Copyright (C) 2010 PrimeBase Technologies GmbH, Germany

 *

 *  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; version 2 of the License.

 *

 *  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

 *

 * Barry Leslie

 *

 * 2010-05-12

 */

#pragma once

#include <drizzled/plugin/event_observer.h>

namespace drizzled

{

namespace plugin

{

class HelloEvents: public EventObserver

{

public:

  HelloEvents(std::string name_arg): EventObserver(name_arg), is_enabled(false), db_list(""), table_list(""){}

  ~HelloEvents();

  void registerTableEventsDo(TableShare &table_share, EventObserverList &observers);

  void registerSchemaEventsDo(const std::string &db, EventObserverList &observers);

  void registerSessionEventsDo(Session &session, EventObserverList &observers);

  bool observeEventDo(EventData &);

  // Some custom things for my plugin:

  void enable() { is_enabled= true;}

  void disable() { is_enabled= false;}

  bool isEnabled() const

  {

    return is_enabled;

  }

private:

  bool is_enabled;

  //----------------------

  std::string db_list;

public:

  void setDatabasesOfInterest(const char *list) 

  {

    db_list.assign(list);

  }

  const char *getDatabasesOfInterest() 

  {

    return db_list.c_str();

  }

private:

  bool isDatabaseInteresting(const std::string &db_name)

  {

    std::string list(db_list);

    list.append(",");

    std::string target(db_name);

    target.append(",");

    return (list.find(target) != std::string::npos);

  }

  //----------------------

  std::string table_list;

public:

  void setTablesOfInterest(const char *list) 

  {

    table_list.assign(list);

  }

  const char *getTablesOfInterest() 

  {

    return table_list.c_str();

  }

private:

  bool isTableInteresting(const std::string &table_name)

  {

    std::string list(table_list);

    list.append(",");

    std::string target(table_name);

    target.append(",");

    return (list.find(target) != std::string::npos);

  }

  //----------------------

  bool isSessionInteresting(Session &)

  {

    /* You could filter sessions of interest based on login

     * information.

     */

    return true;

  }

};

} /* namespace plugin */

} /* namespace drizzled */