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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.


sql/examples/ha_archive.cc:
  - extend handlerton with cursors methods; fix coding style
sql/examples/ha_example.cc:
  - extend handlerton with cursors methods; fix coding style
sql/examples/ha_tina.cc:
  - extend handlerton with cursors methods; fix coding style
sql/ha_berkeley.cc:
  - extend handlerton with cursors methods
sql/ha_blackhole.cc:
  - extend handlerton with cursors methods; fix coding style
sql/ha_federated.cc:
  - extend handlerton with cursors methods; fix coding style
sql/ha_heap.cc:
  - extend handlerton with cursors methods; fix coding style
sql/ha_innodb.cc:
  - extend handlerton with cursors methods
sql/ha_myisam.cc:
  - extend handlerton with cursors methods; fix coding style
sql/ha_myisammrg.cc:
  - extend handlerton with cursors methods; fix coding style
sql/ha_ndbcluster.cc:
  - extend handlerton with cursors methods
sql/handler.h:
  - extend handlerton with cursors methods
sql/sql_select.cc:
  - create a consistent read view when we open a cursor,
    set it for a fetch, and free when we closing the cursor.
sql/sql_select.h:
  - add Cursor::ht_info to remember read views used in a cursor.
tests/mysql_client_test.c:
  Disable an assert that will be no longer valid when consistent
  read views in InnoDB are used.
This commit is contained in:
unknown
2005-07-20 20:02:36 +04:00
parent b6823b6692
commit ec55fec92d
15 changed files with 151 additions and 95 deletions
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2
tests/mysql_client_test.c
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@ -13874,10 +13874,12 @@ static void test_bug10760()
printf("Fetched row %s\n", id_buf);
rc= mysql_rollback(mysql); /* should close the cursor */
myquery(rc);
#if 0
rc= mysql_stmt_fetch(stmt);
DIE_UNLESS(rc);
if (!opt_silent)
printf("Got error (as expected): %s\n", mysql_error(mysql));
#endif
}
mysql_stmt_close(stmt);