table_esms_by_digest.h

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/* Copyright (c) 2010, 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */

#ifndef TABLE_ESMS_BY_DIGEST_H
#define TABLE_ESMS_BY_DIGEST_H

#include "table_helper.h"
#include "pfs_digest.h"

struct row_esms_by_digest
{
  PFS_digest_row m_digest;

  PFS_statement_stat_row m_stat;

  ulonglong m_first_seen;
  ulonglong m_last_seen;
};

class table_esms_by_digest : public PFS_engine_table
{
public:
  static PFS_engine_table_share m_share;
  static PFS_engine_table* create();
  static int delete_all_rows();

  virtual int rnd_next();
  virtual int rnd_pos(const void *pos);
  virtual void reset_position(void);

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

  table_esms_by_digest();

public:
  ~table_esms_by_digest()
  {}

protected:
  void make_row(PFS_statements_digest_stat*);

private:
  static THR_LOCK m_table_lock;
  static TABLE_FIELD_DEF m_field_def;

  row_esms_by_digest m_row;
  bool m_row_exists;
  PFS_simple_index m_pos;
  PFS_simple_index m_next_pos;
};

#endif