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Port of cursors to be pushed into 5.0 tree:

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- client side part is simple and may be considered stable
- server side part now just joggles with THD state to save execution
  state and has no additional locking wisdom.
  Lot's of it are to be rewritten.
This commit is contained in:
konstantin@mysql.com
2004-08-03 03:32:21 -07:00
parent 7e6bade23b
commit d3e520ce7e
31 changed files with 1091 additions and 150 deletions
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9
sql/sql_parse.cc
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@@ -1452,6 +1452,11 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
mysql_stmt_execute(thd, packet, packet_length);
break;
}
case COM_FETCH:
{
mysql_stmt_fetch(thd, packet, packet_length);
break;
}
case COM_LONG_DATA:
{
mysql_stmt_get_longdata(thd, packet, packet_length);
@@ -1545,7 +1550,6 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
send_error(thd,ER_NO_DB_ERROR);
break;
}
thd->free_list=0;
pend= strend(packet);
thd->convert_string(&conv_name, system_charset_info,
packet, (uint) (pend-packet), thd->charset());
@@ -1567,6 +1571,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
break;
mysqld_list_fields(thd,&table_list,fields);
free_items(thd->free_list);
thd->free_list=0; /* free_list should never point to garbage */
break;
}
#endif
@@ -4443,6 +4448,7 @@ void mysql_parse(THD *thd, char *inBuf, uint length)
}
thd->proc_info="freeing items";
free_items(thd->free_list); /* Free strings used by items */
thd->free_list= 0; /* free_list should never point to garbage */
lex_end(lex);
}
DBUG_VOID_RETURN;
@@ -4470,6 +4476,7 @@ bool mysql_test_parse_for_slave(THD *thd, char *inBuf, uint length)
all_tables_not_ok(thd,(TABLE_LIST*) lex->select_lex.table_list.first))
error= 1; /* Ignore question */
free_items(thd->free_list); /* Free strings used by items */
thd->free_list= 0; /* free_list should never point to garbage */
lex_end(lex);
DBUG_RETURN(error);