1
/* Copyright (C) 2009 PrimeBase Technologies GmbH, Germany
3
* PrimeBase Media Stream for MySQL
5
* This program is free software; you can redistribute it and/or modify
6
* it under the terms of the GNU General Public License as published by
7
* the Free Software Foundation; either version 2 of the License, or
8
* (at your option) any later version.
10
* This program is distributed in the hope that it will be useful,
11
* but WITHOUT ANY WARRANTY; without even the implied warranty of
12
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13
* GNU General Public License for more details.
15
* You should have received a copy of the GNU General Public License
16
* along with this program; if not, write to the Free Software
17
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21
* System variables table.
26
#ifndef __SYSTAB_VARIABLES_H__
27
#define __SYSTAB_VARIABLES_H__
29
#include "cslib/CSMutex.h"
32
#include "system_table_ms.h"
33
#include "discover_ms.h"
35
#define RESTORE_DUMP_VAR "Restoring-Dump"
36
#define BACKUP_NUMBER_VAR "Backup-Number"
37
#define VARIABLES_TABLE_NAME "pbms_variable"
38
class MSVariableTable : public MSOpenSystemTable {
40
MSVariableTable(MSSystemTableShare *share, TABLE *table);
46
bool seqScanNext(char *buf);
47
int getRefLen() { return sizeof(iVariableIndex);}
48
void seqScanPos(unsigned char *pos);
49
void seqScanRead(unsigned char *pos, char *buf);
51
void updateRow(char *old_data, char *new_data);
53
static void saveTable(MSDatabase *db);
54
static void loadTable(MSDatabase *db);
55
static void transferTable(MSDatabase *from_db, MSDatabase *to_db);
56
static void setVariable(MSDatabase *db, const char *name, const char *value);
57
static CSStringBuffer *dumpTable(MSDatabase *db);
58
static void restoreTable(MSDatabase *db, const char *data, size_t size, bool reload = true);
59
static void removeTable(CSString *db_path);
61
static const uint8_t tableID = 0X04; // A unique id for the MSVariableTable dump data
62
static const uint16_t tableVersion = 0X0001; // The current version of the table
65
uint32_t iVariableIndex;
66
static CSLock gVarLock;
70
extern DT_FIELD_INFO pbms_variable_info[];
71
extern DT_KEY_INFO pbms_variable_keys[];
73
#endif // __SYSTAB_VARIABLES_H__