/* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.

  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,
  51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */

#ifndef TABLE_USERS_H
#define TABLE_USERS_H

#include "pfs_column_types.h"
#include "cursor_by_user.h"
#include "table_helper.h"

struct PFS_user;

/**
  \addtogroup Performance_schema_tables
  @{
*/

/**
  A row of PERFORMANCE_SCHEMA.USERS.
*/
struct row_users
{
  /** Column USER. */
  PFS_user_row m_user;
  /** Columns CURRENT_CONNECTIONS, TOTAL_CONNECTIONS. */
  PFS_connection_stat_row m_connection_stat;
};

/** Table PERFORMANCE_SCHEMA.USERS. */
class table_users : public cursor_by_user
{
public:
  /** Table share */
  static PFS_engine_table_share m_share;
  /** Table builder */
  static PFS_engine_table* create();
  static int delete_all_rows();

protected:
  virtual int read_row_values(TABLE *table,
                              unsigned char *buf,
                              Field **fields,
                              bool read_all);


protected:
  table_users();

public:
  ~table_users()
  {}

private:
  virtual void make_row(PFS_user *pfs);

  /** Table share lock. */
  static THR_LOCK m_table_lock;

  /** Current row. */
  row_users m_row;
  /** True if the current row exists. */
  bool m_row_exists;
};

/** @} */
#endif
