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System Versioning pre0.12

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Merge remote-tracking branch 'origin/archive/2017-10-17' into 10.3
This commit is contained in:
Aleksey Midenkov
2017-11-07 00:37:49 +03:00
parent 835cbbcc7b ce66d5b2a5
commit d8d7251019
354 changed files with 20615 additions and 1638 deletions
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170
sql/handler.h
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@ -34,6 +34,8 @@
#include "structs.h" /* SHOW_COMP_OPTION */
#include "sql_array.h" /* Dynamic_array<> */
#include "mdl.h"
#include "vtq.h"
#include "vers_string.h"
#include "sql_analyze_stmt.h" // for Exec_time_tracker
@ -400,6 +402,8 @@ enum enum_alter_inplace_result {
#define HA_LEX_CREATE_TMP_TABLE 1U
#define HA_CREATE_TMP_ALTER 8U
#define HA_LEX_CREATE_SEQUENCE 16U
#define HA_VERSIONED_TABLE 32U
#define HA_VTMD 64U
#define HA_MAX_REC_LENGTH 65535
@ -1382,6 +1386,40 @@ struct handlerton
*/
int (*discover_table_structure)(handlerton *hton, THD* thd,
TABLE_SHARE *share, HA_CREATE_INFO *info);
/*
System Versioning
*/
/**
Query VTQ by TRX_ID.
@param[in] thd MySQL thread
@param[out] out field value or whole record returned by query (selected by `field`)
@param[in] in_trx_id query parameter TRX_ID
@param[in] field field to get in `out` or VTQ_ALL for whole record (vtq_record_t)
@return TRUE if record is found, FALSE otherwise */
bool (*vers_query_trx_id)(THD* thd, void *out, ulonglong trx_id, vtq_field_t field);
/** Query VTQ by COMMIT_TS.
@param[in] thd MySQL thread
@param[out] out field value or whole record returned by query (selected by `field`)
@param[in] commit_ts query parameter COMMIT_TS
@param[in] field field to get in `out` or VTQ_ALL for whole record (vtq_record_t)
@param[in] backwards direction of VTQ search
@return TRUE if record is found, FALSE otherwise */
bool (*vers_query_commit_ts)(THD* thd, void *out, const MYSQL_TIME &commit_ts,
vtq_field_t field, bool backwards);
/** Check if transaction TX1 sees transaction TX0.
@param[in] thd MySQL thread
@param[out] result true if TX1 sees TX0
@param[in] trx_id1 TX1 TRX_ID
@param[in] trx_id0 TX0 TRX_ID
@param[in] commit_id1 TX1 COMMIT_ID
@param[in] iso_level1 TX1 isolation level
@param[in] commit_id0 TX0 COMMIT_ID
@return FALSE if there is no trx_id1 in VTQ, otherwise TRUE */
bool (*vers_trx_sees)(THD *thd, bool &result, ulonglong trx_id1, ulonglong trx_id0,
ulonglong commit_id1, uchar iso_level1, ulonglong commit_id0);
};
@ -1429,6 +1467,7 @@ handlerton *ha_default_tmp_handlerton(THD *thd);
*/
#define HTON_NO_BINLOG_ROW_OPT (1 << 9)
#define HTON_SUPPORTS_EXTENDED_KEYS (1 <<10) //supports extended keys
#define HTON_NATIVE_SYS_VERSIONING (1 << 11) //Engine supports System Versioning
// MySQL compatibility. Unused.
#define HTON_SUPPORTS_FOREIGN_KEYS (1 << 0) //Foreign key constraint supported.
@ -1674,6 +1713,86 @@ struct Schema_specification_st
}
};
class Create_field;
struct Vers_parse_info
{
Vers_parse_info() :
with_system_versioning(false),
without_system_versioning(false),
versioned_fields(false),
unversioned_fields(false)
{}
struct start_end_t
{
start_end_t()
{}
start_end_t(LEX_CSTRING _start, LEX_CSTRING _end) :
start(_start),
end(_end) {}
LString_i start;
LString_i end;
};
start_end_t system_time;
start_end_t as_row;
void set_period_for_system_time(LString start, LString end)
{
system_time.start= start;
system_time.end= end;
}
private:
bool is_trx_start(const char *name) const;
bool is_trx_end(const char *name) const;
bool is_trx_start(const Create_field &f) const;
bool is_trx_end(const Create_field &f) const;
bool fix_implicit(THD *thd, Alter_info *alter_info, bool integer_fields);
bool need_check() const
{
return
versioned_fields ||
unversioned_fields ||
with_system_versioning ||
without_system_versioning ||
system_time.start ||
system_time.end ||
as_row.start ||
as_row.end;
}
bool check_with_conditions(const char *table_name) const;
bool check_generated_type(const char *table_name, Alter_info *alter_info,
bool integer_fields) const;
public:
bool check_and_fix_implicit(THD *thd, Alter_info *alter_info,
HA_CREATE_INFO *create_info,
const char *table_name);
bool check_and_fix_alter(THD *thd, Alter_info *alter_info,
HA_CREATE_INFO *create_info, TABLE_SHARE *share);
bool fix_create_like(THD *thd, Alter_info *alter_info,
HA_CREATE_INFO *create_info, TABLE_LIST *table);
/** User has added 'WITH SYSTEM VERSIONING' to table definition */
bool with_system_versioning : 1;
/** Use has added 'WITHOUT SYSTEM VERSIONING' to ALTER TABLE */
bool without_system_versioning : 1;
/**
At least one field was specified 'WITH SYSTEM VERSIONING'. Useful for
error handling.
*/
bool versioned_fields : 1;
/**
At least one field was specified 'WITHOUT SYSTEM VERSIONING'. Useful for
error handling.
*/
bool unversioned_fields : 1;
};
/**
A helper struct for table DDL statements, e.g.:
@ -1749,6 +1868,8 @@ struct Table_scope_and_contents_source_st
bool table_was_deleted;
sequence_definition *seq_create_info;
Vers_parse_info vers_info;
void init()
{
bzero(this, sizeof(*this));
@ -1759,6 +1880,16 @@ struct Table_scope_and_contents_source_st
db_type= tmp_table() ? ha_default_tmp_handlerton(thd)
: ha_default_handlerton(thd);
}
bool versioned() const
{
return options & HA_VERSIONED_TABLE;
}
bool vtmd() const
{
return options & HA_VTMD;
}
};
@ -2025,6 +2156,8 @@ public:
static const HA_ALTER_FLAGS ALTER_DROP_CHECK_CONSTRAINT= 1ULL << 40;
static const HA_ALTER_FLAGS ALTER_DROP_HISTORICAL = 1ULL << 41;
/**
Create options (like MAX_ROWS) for the new version of table.
@ -2757,6 +2890,8 @@ public:
*/
uint auto_inc_intervals_count;
ulonglong vers_auto_decrement;
/**
Instrumented table associated with this handler.
This member should be set to NULL when no instrumentation is in place,
@ -3191,6 +3326,18 @@ protected:
virtual int index_last(uchar * buf)
{ return HA_ERR_WRONG_COMMAND; }
virtual int index_next_same(uchar *buf, const uchar *key, uint keylen);
/**
@brief
The following functions works like index_read, but it find the last
row with the current key value or prefix.
@returns @see index_read_map().
*/
virtual int index_read_last_map(uchar * buf, const uchar * key,
key_part_map keypart_map)
{
uint key_len= calculate_key_len(table, active_index, key, keypart_map);
return index_read_last(buf, key, key_len);
}
virtual int close(void)=0;
inline void update_rows_read()
{
@ -3270,7 +3417,7 @@ public:
void ft_end() { ft_handler=NULL; }
virtual FT_INFO *ft_init_ext(uint flags, uint inx,String *key)
{ return NULL; }
private:
public:
virtual int ft_read(uchar *buf) { return HA_ERR_WRONG_COMMAND; }
virtual int rnd_next(uchar *buf)=0;
virtual int rnd_pos(uchar * buf, uchar *pos)=0;
@ -3977,6 +4124,7 @@ public:
TABLE_SHARE* get_table_share() { return table_share; }
protected:
/* Service methods for use by storage engines. */
void ha_statistic_increment(ulong SSV::*offset) const;
void **ha_data(THD *) const;
THD *ha_thd(void) const;
@ -4001,8 +4149,8 @@ protected:
virtual int delete_table(const char *name);
public:
inline bool check_table_binlog_row_based(bool binlog_row);
private:
bool check_table_binlog_row_based(bool binlog_row);
/* Cache result to avoid extra calls */
inline void mark_trx_read_write()
{
@ -4012,6 +4160,8 @@ private:
mark_trx_read_write_internal();
}
}
private:
void mark_trx_read_write_internal();
bool check_table_binlog_row_based_internal(bool binlog_row);
@ -4130,6 +4280,11 @@ protected:
virtual int index_read(uchar * buf, const uchar * key, uint key_len,
enum ha_rkey_function find_flag)
{ return HA_ERR_WRONG_COMMAND; }
virtual int index_read_last(uchar * buf, const uchar * key, uint key_len)
{
my_errno= HA_ERR_WRONG_COMMAND;
return HA_ERR_WRONG_COMMAND;
}
friend class ha_partition;
friend class ha_sequence;
public:
@ -4253,6 +4408,15 @@ public:
*/
virtual int find_unique_row(uchar *record, uint unique_ref)
{ return -1; /*unsupported */}
bool native_versioned() const
{ DBUG_ASSERT(ht); return partition_ht()->flags & HTON_NATIVE_SYS_VERSIONING; }
virtual ha_rows part_records(void *_part_elem)
{ DBUG_ASSERT(0); return false; }
virtual handler* part_handler(uint32 part_id)
{ DBUG_ASSERT(0); return NULL; }
virtual void update_partition(uint part_id)
{}
protected:
Handler_share *get_ha_share_ptr();
void set_ha_share_ptr(Handler_share *arg_ha_share);