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Merge gbichot@bk-internal.mysql.com:/home/bk/mysql-5.1-runtime

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into  gbichot3.local:/home/mysql_src/mysql-5.1-runtime-735-realfix
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guilhem@gbichot3.local
2007-03-15 12:11:03 +01:00
parent e677c6e70f eaf7728d9f
commit 245668efb0
17 changed files with 876 additions and 97 deletions
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102
sql/sql_prepare.cc
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@ -93,11 +93,11 @@ When one supplies long data for a placeholder:
/* A result class used to send cursor rows using the binary protocol. */
class Select_fetch_protocol_prep: public select_send
class Select_fetch_protocol_binary: public select_send
{
Protocol_prep protocol;
Protocol_binary protocol;
public:
Select_fetch_protocol_prep(THD *thd);
Select_fetch_protocol_binary(THD *thd);
virtual bool send_fields(List<Item> &list, uint flags);
virtual bool send_data(List<Item> &items);
virtual bool send_eof();
@ -125,7 +125,7 @@ public:
};
THD *thd;
Select_fetch_protocol_prep result;
Select_fetch_protocol_binary result;
Protocol *protocol;
Item_param **param_array;
uint param_count;
@ -247,9 +247,9 @@ static bool send_prep_stmt(Prepared_statement *stmt, uint columns)
*/
DBUG_RETURN(my_net_write(net, buff, sizeof(buff)) ||
(stmt->param_count &&
stmt->thd->protocol_simple.send_fields((List<Item> *)
&stmt->lex->param_list,
Protocol::SEND_EOF)));
stmt->thd->protocol_text.send_fields((List<Item> *)
&stmt->lex->param_list,
Protocol::SEND_EOF)));
}
#else
static bool send_prep_stmt(Prepared_statement *stmt,
@ -691,7 +691,7 @@ static void setup_one_conversion_function(THD *thd, Item_param *param,
and generate a valid query for logging.
NOTES
This function, along with other _withlog functions is called when one of
This function, along with other _with_log functions is called when one of
binary, slow or general logs is open. Logging of prepared statements in
all cases is performed by means of conventional queries: if parameter
data was supplied from C API, each placeholder in the query is
@ -715,9 +715,9 @@ static void setup_one_conversion_function(THD *thd, Item_param *param,
0 if success, 1 otherwise
*/
static bool insert_params_withlog(Prepared_statement *stmt, uchar *null_array,
uchar *read_pos, uchar *data_end,
String *query)
static bool insert_params_with_log(Prepared_statement *stmt, uchar *null_array,
uchar *read_pos, uchar *data_end,
String *query)
{
THD *thd= stmt->thd;
Item_param **begin= stmt->param_array;
@ -725,7 +725,7 @@ static bool insert_params_withlog(Prepared_statement *stmt, uchar *null_array,
uint32 length= 0;
String str;
const String *res;
DBUG_ENTER("insert_params_withlog");
DBUG_ENTER("insert_params_with_log");
if (query->copy(stmt->query, stmt->query_length, default_charset_info))
DBUG_RETURN(1);
@ -869,7 +869,8 @@ static bool emb_insert_params(Prepared_statement *stmt, String *expanded_query)
}
static bool emb_insert_params_withlog(Prepared_statement *stmt, String *query)
static bool emb_insert_params_with_log(Prepared_statement *stmt,
String *query)
{
THD *thd= stmt->thd;
Item_param **it= stmt->param_array;
@ -880,7 +881,7 @@ static bool emb_insert_params_withlog(Prepared_statement *stmt, String *query)
const String *res;
uint32 length= 0;
DBUG_ENTER("emb_insert_params_withlog");
DBUG_ENTER("emb_insert_params_with_log");
if (query->copy(stmt->query, stmt->query_length, default_charset_info))
DBUG_RETURN(1);
@ -1889,7 +1890,7 @@ void mysql_stmt_prepare(THD *thd, const char *packet, uint packet_length)
/* First of all clear possible warnings from the previous command */
mysql_reset_thd_for_next_command(thd);
if (! (stmt= new Prepared_statement(thd, &thd->protocol_prep)))
if (! (stmt= new Prepared_statement(thd, &thd->protocol_binary)))
DBUG_VOID_RETURN; /* out of memory: error is set in Sql_alloc */
if (thd->stmt_map.insert(thd, stmt))
@ -2061,8 +2062,8 @@ void mysql_sql_stmt_prepare(THD *thd)
const char *query;
uint query_len;
DBUG_ENTER("mysql_sql_stmt_prepare");
DBUG_ASSERT(thd->protocol == &thd->protocol_simple);
LINT_INIT(query_len);
DBUG_ASSERT(thd->protocol == &thd->protocol_text);
if ((stmt= (Prepared_statement*) thd->stmt_map.find_by_name(name)))
{
@ -2075,7 +2076,7 @@ void mysql_sql_stmt_prepare(THD *thd)
}
if (! (query= get_dynamic_sql_string(lex, &query_len)) ||
! (stmt= new Prepared_statement(thd, &thd->protocol_simple)))
! (stmt= new Prepared_statement(thd, &thd->protocol_text)))
{
DBUG_VOID_RETURN; /* out of memory */
}
@ -2628,14 +2629,14 @@ void mysql_stmt_get_longdata(THD *thd, char *packet, ulong packet_length)
/***************************************************************************
Select_fetch_protocol_prep
Select_fetch_protocol_binary
****************************************************************************/
Select_fetch_protocol_prep::Select_fetch_protocol_prep(THD *thd_arg)
Select_fetch_protocol_binary::Select_fetch_protocol_binary(THD *thd_arg)
:protocol(thd_arg)
{}
bool Select_fetch_protocol_prep::send_fields(List<Item> &list, uint flags)
bool Select_fetch_protocol_binary::send_fields(List<Item> &list, uint flags)
{
bool rc;
Protocol *save_protocol= thd->protocol;
@ -2653,7 +2654,7 @@ bool Select_fetch_protocol_prep::send_fields(List<Item> &list, uint flags)
return rc;
}
bool Select_fetch_protocol_prep::send_eof()
bool Select_fetch_protocol_binary::send_eof()
{
Protocol *save_protocol= thd->protocol;
@ -2665,7 +2666,7 @@ bool Select_fetch_protocol_prep::send_eof()
bool
Select_fetch_protocol_prep::send_data(List<Item> &fields)
Select_fetch_protocol_binary::send_data(List<Item> &fields)
{
Protocol *save_protocol= thd->protocol;
bool rc;
@ -2699,15 +2700,26 @@ Prepared_statement::Prepared_statement(THD *thd_arg, Protocol *protocol_arg)
void Prepared_statement::setup_set_params()
{
/* Setup binary logging */
/*
Note: BUG#25843 applies here too (query cache lookup uses thd->db, not
db from "prepare" time).
*/
if (query_cache_maybe_disabled(thd)) // we won't expand the query
lex->safe_to_cache_query= FALSE; // so don't cache it at Execution
/*
Decide if we have to expand the query (because we must write it to logs or
because we want to look it up in the query cache) or not.
*/
if (mysql_bin_log.is_open() && is_update_query(lex->sql_command) ||
opt_log || opt_slow_log)
opt_log || opt_slow_log ||
query_cache_is_cacheable_query(lex))
{
set_params_from_vars= insert_params_from_vars_with_log;
#ifndef EMBEDDED_LIBRARY
set_params= insert_params_withlog;
set_params= insert_params_with_log;
#else
set_params_data= emb_insert_params_withlog;
set_params_data= emb_insert_params_with_log;
#endif
}
else
@ -2844,7 +2856,6 @@ bool Prepared_statement::prepare(const char *packet, uint packet_len)
error= MYSQLparse((void *)thd) || thd->is_fatal_error ||
thd->net.report_error || init_param_array(this);
lex->safe_to_cache_query= FALSE;
/*
While doing context analysis of the query (in check_prepared_statement)
we allocate a lot of additional memory: for open tables, JOINs, derived
@ -2887,6 +2898,18 @@ bool Prepared_statement::prepare(const char *packet, uint packet_len)
thd->restore_backup_statement(this, &stmt_backup);
thd->stmt_arena= old_stmt_arena;
if ((protocol->type() == Protocol::PROTOCOL_TEXT) && (param_count > 0))
{
/*
This is a mysql_sql_stmt_prepare(); query expansion will insert user
variable references, and user variables are uncacheable, thus we have to
mark this statement as uncacheable.
This has to be done before setup_set_params(), as it may make expansion
unneeded.
*/
lex->safe_to_cache_query= FALSE;
}
if (error == 0)
{
setup_set_params();
@ -3003,11 +3026,26 @@ bool Prepared_statement::execute(String *expanded_query, bool open_cursor)
reinit_stmt_before_use(thd, lex);
thd->protocol= protocol; /* activate stmt protocol */
error= (open_cursor ?
mysql_open_cursor(thd, (uint) ALWAYS_MATERIALIZED_CURSOR,
&result, &cursor) :
mysql_execute_command(thd));
thd->protocol= &thd->protocol_simple; /* use normal protocol */
if (open_cursor)
error= mysql_open_cursor(thd, (uint) ALWAYS_MATERIALIZED_CURSOR,
&result, &cursor);
else
{
/*
Try to find it in the query cache, if not, execute it.
Note that multi-statements cannot exist here (they are not supported in
prepared statements).
*/
if (query_cache_send_result_to_client(thd, thd->query,
thd->query_length) <= 0)
{
error= mysql_execute_command(thd);
query_cache_end_of_result(thd);
}
}
thd->protocol= &thd->protocol_text; /* use normal protocol */
/* Assert that if an error, no cursor is open */
DBUG_ASSERT(! (error && cursor));