database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-20 10:24:14 +03:00
Code Activity

create a reusable function that tells what FK actions can write

Browse Source 
and few indentation changes
This commit is contained in:
Sergei Golubchik
2018-02-23 13:41:46 +01:00
parent 17f8e0ecdf
commit 794f71cbc4
5 changed files with 21 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
sql/sql_base.cc
View File

@ -4370,12 +4370,11 @@ handle_table(THD *thd, Query_tables_list *prelocking_ctx,
while ((fk= fk_list_it++))
{
// FK_OPTION_RESTRICT and FK_OPTION_NO_ACTION only need read access
static bool can_write[]= { true, false, true, true, false, true };
uint8 op= table_list->trg_event_map;
thr_lock_type lock_type;
if ((op & (1 << TRG_EVENT_DELETE) && can_write[fk->delete_method])
|| (op & (1 << TRG_EVENT_UPDATE) && can_write[fk->update_method]))
if ((op & (1 << TRG_EVENT_DELETE) && fk_modifies_child(fk->delete_method))
|| (op & (1 << TRG_EVENT_UPDATE) && fk_modifies_child(fk->update_method)))
lock_type= TL_WRITE_ALLOW_WRITE;
else
lock_type= TL_READ;

2
sql/sql_delete.cc
View File

@ -912,7 +912,7 @@ got_error:
wild_num - number of wildcards used in optional SELECT clause
field_list - list of items in optional SELECT clause
conds - conditions
l
RETURN VALUE
FALSE OK
TRUE error

12
sql/sql_table.cc
View File

@ -3656,9 +3656,9 @@ mysql_prepare_create_table(THD *thd, HA_CREATE_INFO *create_info,
if (key->type == Key::FOREIGN_KEY)
{
fk_key_count++;
if (((Foreign_key *)key)->validate(alter_info->create_list))
DBUG_RETURN(TRUE);
Foreign_key *fk_key= (Foreign_key*) key;
if (fk_key->validate(alter_info->create_list))
DBUG_RETURN(TRUE);
if (fk_key->ref_columns.elements &&
fk_key->ref_columns.elements != fk_key->columns.elements)
{
@ -4455,12 +4455,8 @@ bool Column_definition::sp_prepare_create_field(THD *thd, MEM_ROOT *mem_root)
}
static bool
vers_prepare_keys(THD *thd,
HA_CREATE_INFO *create_info,
Alter_info *alter_info,
KEY **key_info,
uint key_count)
static bool vers_prepare_keys(THD *thd, HA_CREATE_INFO *create_info,
Alter_info *alter_info, KEY **key_info, uint key_count)
{
DBUG_ASSERT(create_info->versioned());

6
sql/table.cc
View File

@ -8554,6 +8554,12 @@ LEX_CSTRING *fk_option_name(enum_fk_option opt)
return names + opt;
}
bool fk_modifies_child(enum_fk_option opt)
{
static bool can_write[]= { false, false, true, true, false, true };
return can_write[opt];
}
enum TR_table::enabled TR_table::use_transaction_registry= TR_table::MAYBE;
TR_table::TR_table(THD* _thd, bool rw) :

1
sql/table.h
View File

@ -1620,6 +1620,7 @@ typedef struct st_foreign_key_info
} FOREIGN_KEY_INFO;
LEX_CSTRING *fk_option_name(enum_fk_option opt);
bool fk_modifies_child(enum_fk_option opt);
#define MY_I_S_MAYBE_NULL 1U
#define MY_I_S_UNSIGNED 2U