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Implement MySQL framework to support consistent read views in

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cursors. This should fix Bug#11813 when InnoDB part is in 
(tested with a draft patch).
The idea of the patch is that if a storage engine supports
consistent read views, we open one when open a cursor,
set is as the active view when fetch from the cursor, and close
together with cursor close.
This commit is contained in:
konstantin@mysql.com
2005-07-20 20:02:36 +04:00
parent 4570ace8fb
commit 21957c423e
15 changed files with 151 additions and 95 deletions
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6
sql/sql_select.h
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@ -389,6 +389,12 @@ class Cursor: public Sql_alloc, public Query_arena
TABLE *derived_tables;
/* List of items created during execution */
query_id_t query_id;
struct Engine_info
{
const handlerton *ht;
void *read_view;
};
Engine_info ht_info[MAX_HA];
public:
Item_change_list change_list;
select_send result;