diff options
Diffstat (limited to 'sql/handler.h')
| -rw-r--r-- | sql/handler.h | 47 |
1 files changed, 41 insertions, 6 deletions
diff --git a/sql/handler.h b/sql/handler.h index 216620a6882..6bd55a9511e 100644 --- a/sql/handler.h +++ b/sql/handler.h @@ -117,6 +117,18 @@ #define HA_HAS_RECORDS (LL(1) << 32) /* records() gives exact count*/ /* Has it's own method of binlog logging */ #define HA_HAS_OWN_BINLOGGING (LL(1) << 33) +/* + Engine is capable of row-format and statement-format logging, + respectively +*/ +#define HA_BINLOG_ROW_CAPABLE (LL(1) << 34) +#define HA_BINLOG_STMT_CAPABLE (LL(1) << 35) + +/* + Set of all binlog flags. Currently only contain the capabilities + flags. + */ +#define HA_BINLOG_FLAGS (HA_BINLOG_ROW_CAPABLE | HA_BINLOG_STMT_CAPABLE) /* bits in index_flags(index_number) for what you can do with index */ #define HA_READ_NEXT 1 /* TODO really use this flag */ @@ -688,7 +700,7 @@ struct handlerton }; -/* Possible flags of a handlerton */ +/* Possible flags of a handlerton (there can be 32 of them) */ #define HTON_NO_FLAGS 0 #define HTON_CLOSE_CURSORS_AT_COMMIT (1 << 0) #define HTON_ALTER_NOT_SUPPORTED (1 << 1) //Engine does not support alter @@ -793,19 +805,37 @@ typedef struct st_key_create_information class TABLEOP_HOOKS { public: + TABLEOP_HOOKS() {} + virtual ~TABLEOP_HOOKS() {} + inline void prelock(TABLE **tables, uint count) { do_prelock(tables, count); } - virtual ~TABLEOP_HOOKS() {} - TABLEOP_HOOKS() {} + inline int postlock(TABLE **tables, uint count) + { + return do_postlock(tables, count); + } private: /* Function primitive that is called prior to locking tables */ virtual void do_prelock(TABLE **tables, uint count) { /* Default is to do nothing */ } + + /** + Primitive called after tables are locked. + + If an error is returned, the tables will be unlocked and error + handling start. + + @return Error code or zero. + */ + virtual int do_postlock(TABLE **tables, uint count) + { + return 0; /* Default is to do nothing */ + } }; typedef struct st_savepoint SAVEPOINT; @@ -892,10 +922,13 @@ class handler :public Sql_alloc friend int ha_delete_table(THD*,handlerton*,const char*,const char*, const char*,bool); +public: + typedef ulonglong Table_flags; + protected: struct st_table_share *table_share; /* The table definition */ struct st_table *table; /* The current open table */ - ulonglong cached_table_flags; /* Set on init() and open() */ + Table_flags cached_table_flags; /* Set on init() and open() */ virtual int index_init(uint idx, bool sorted) { active_index=idx; return 0; } virtual int index_end() { active_index=MAX_KEY; return 0; } @@ -908,7 +941,7 @@ class handler :public Sql_alloc */ virtual int rnd_init(bool scan) =0; virtual int rnd_end() { return 0; } - virtual ulonglong table_flags(void) const =0; + virtual Table_flags table_flags(void) const =0; void ha_statistic_increment(ulong SSV::*offset) const; void **ha_data(THD *) const; @@ -1122,7 +1155,7 @@ public: { return inited == INDEX ? ha_index_end() : inited == RND ? ha_rnd_end() : 0; } - longlong ha_table_flags() { return cached_table_flags; } + Table_flags ha_table_flags() const { return cached_table_flags; } /* Signal that the table->read_set and table->write_set table maps changed @@ -1686,6 +1719,8 @@ private: /* Some extern variables used with handlers */ extern const char *ha_row_type[]; +extern const char *tx_isolation_names[]; +extern const char *binlog_format_names[]; extern TYPELIB tx_isolation_typelib; extern TYPELIB myisam_stats_method_typelib; extern ulong total_ha, total_ha_2pc; |