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/* Copyright (C) 2003 MySQL AB
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef DBDICT_SCHEMA_FILE_HPP
#define DBDICT_SCHEMA_FILE_HPP
#include <ndb_types.h>
#include <ndb_version.h>
#include <string.h>
#define NDB_SF_MAGIC "NDBSCHMA"
// page size 4k
#define NDB_SF_PAGE_SIZE_IN_WORDS_LOG2 10
#define NDB_SF_PAGE_SIZE_IN_WORDS (1 << NDB_SF_PAGE_SIZE_IN_WORDS_LOG2)
#define NDB_SF_PAGE_SIZE (NDB_SF_PAGE_SIZE_IN_WORDS << 2)
// 4k = (1 + 127) * 32
#define NDB_SF_PAGE_ENTRIES 127
// 160 pages = 20320 objects
#define NDB_SF_MAX_PAGES 160
// versions where format changed
#define NDB_SF_VERSION_5_0_6 MAKE_VERSION(5, 0, 6)
// One page in schema file.
struct SchemaFile {
// header size 32 bytes
char Magic[8];
Uint32 ByteOrder;
Uint32 NdbVersion;
Uint32 FileSize; // In bytes
Uint32 PageNumber;
Uint32 CheckSum; // Of this page
Uint32 NoOfTableEntries; // On this page (NDB_SF_PAGE_ENTRIES)
enum TableState {
INIT = 0,
ADD_STARTED = 1,
TABLE_ADD_COMMITTED = 2,
DROP_TABLE_STARTED = 3,
DROP_TABLE_COMMITTED = 4,
ALTER_TABLE_COMMITTED = 5
};
// entry size 32 bytes
struct TableEntry {
Uint32 m_tableState;
Uint32 m_tableVersion;
Uint32 m_tableType;
Uint32 m_info_words;
Uint32 m_gcp;
Uint32 m_unused[3];
bool operator==(const TableEntry& o) const {
return memcmp(this, &o, sizeof(* this))== 0;
}
};
// pre-5.0.6
struct TableEntry_old {
Uint32 m_tableState;
Uint32 m_tableVersion;
Uint32 m_tableType;
Uint32 m_noOfPages;
Uint32 m_gcp;
};
union {
TableEntry TableEntries[NDB_SF_PAGE_ENTRIES];
TableEntry_old TableEntries_old[1];
};
};
#endif
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