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Bug#20168

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"Change in behavior --default-storage-engine=ndb or ndbcluster"
  Reduce use of legacy_db_type, some code cleanup
  (serg read my mind and implemented desired mysqld.cc changes)
This commit is contained in:
acurtis@xiphis.org 2006-06-12 06:50:11 -07:00
parent acf3a19382
commit 62729fcdfe
5 changed files with 78 additions and 47 deletions
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84
sql/handler.cc
View File

@ -68,14 +68,14 @@ ulong total_ha_2pc= 0;
/* size of savepoint storage area (see ha_init) */ /* size of savepoint storage area (see ha_init) */
ulong savepoint_alloc_size= 0; ulong savepoint_alloc_size= 0;
struct show_table_alias_st sys_table_aliases[]= static const LEX_STRING sys_table_aliases[]=
{ {
{"INNOBASE", DB_TYPE_INNODB}, {(char*)STRING_WITH_LEN("INNOBASE")}, {(char*)STRING_WITH_LEN("INNODB")},
{"NDB", DB_TYPE_NDBCLUSTER}, {(char*)STRING_WITH_LEN("NDB")}, {(char*)STRING_WITH_LEN("NDBCLUSTER")},
{"BDB", DB_TYPE_BERKELEY_DB}, {(char*)STRING_WITH_LEN("BDB")}, {(char*)STRING_WITH_LEN("BERKELEYDB")},
{"HEAP", DB_TYPE_HEAP}, {(char*)STRING_WITH_LEN("HEAP")}, {(char*)STRING_WITH_LEN("MEMORY")},
{"MERGE", DB_TYPE_MRG_MYISAM}, {(char*)STRING_WITH_LEN("MERGE")}, {(char*)STRING_WITH_LEN("MRG_MYISAM")},
{NullS, DB_TYPE_UNKNOWN} {NullS, 0}
}; };
const char *ha_row_type[] = { const char *ha_row_type[] = {
@ -91,15 +91,50 @@ TYPELIB tx_isolation_typelib= {array_elements(tx_isolation_names)-1,"",
static TYPELIB known_extensions= {0,"known_exts", NULL, NULL}; static TYPELIB known_extensions= {0,"known_exts", NULL, NULL};
uint known_extensions_id= 0; uint known_extensions_id= 0;
handlerton *ha_resolve_by_name(THD *thd, LEX_STRING *name)
/*
Return the default storage engine handlerton for thread
SYNOPSIS
ha_default_handlerton(thd)
thd current thread
RETURN
pointer to handlerton
*/
handlerton *ha_default_handlerton(THD *thd)
{ {
show_table_alias_st *table_alias; return (thd->variables.table_type != NULL) ?
thd->variables.table_type :
(global_system_variables.table_type != NULL ?
global_system_variables.table_type : &myisam_hton);
}
/*
Return the storage engine handlerton for the supplied name
SYNOPSIS
ha_resolve_by_name(thd, name)
thd current thread
name name of storage engine
RETURN
pointer to handlerton
*/
handlerton *ha_resolve_by_name(THD *thd, const LEX_STRING *name)
{
const LEX_STRING *table_alias;
st_plugin_int *plugin; st_plugin_int *plugin;
if (thd && !my_strnncoll(&my_charset_latin1, redo:
/* my_strnncoll is a macro and gcc doesn't do early expansion of macro */
if (thd && !my_charset_latin1.coll->strnncoll(&my_charset_latin1,
(const uchar *)name->str, name->length, (const uchar *)name->str, name->length,
(const uchar *)"DEFAULT", 7)) (const uchar *)STRING_WITH_LEN("DEFAULT"), 0))
return ha_resolve_by_legacy_type(thd, DB_TYPE_DEFAULT); return ha_default_handlerton(thd);
if ((plugin= plugin_lock(name, MYSQL_STORAGE_ENGINE_PLUGIN))) if ((plugin= plugin_lock(name, MYSQL_STORAGE_ENGINE_PLUGIN)))
{ {
@ -112,13 +147,15 @@ handlerton *ha_resolve_by_name(THD *thd, LEX_STRING *name)
/* /*
We check for the historical aliases. We check for the historical aliases.
*/ */
for (table_alias= sys_table_aliases; table_alias->type; table_alias++) for (table_alias= sys_table_aliases; table_alias->str; table_alias+= 2)
{ {
if (!my_strnncoll(&my_charset_latin1, if (!my_strnncoll(&my_charset_latin1,
(const uchar *)name->str, name->length, (const uchar *)name->str, name->length,
(const uchar *)table_alias->alias, (const uchar *)table_alias->str, table_alias->length))
strlen(table_alias->alias))) {
return ha_resolve_by_legacy_type(thd, table_alias->type); name= table_alias + 1;
goto redo;
}
} }
return NULL; return NULL;
@ -130,20 +167,20 @@ const char *ha_get_storage_engine(enum legacy_db_type db_type)
switch (db_type) { switch (db_type) {
case DB_TYPE_DEFAULT: case DB_TYPE_DEFAULT:
return "DEFAULT"; return "DEFAULT";
case DB_TYPE_UNKNOWN:
return "UNKNOWN";
default: default:
if (db_type > DB_TYPE_UNKNOWN && db_type < DB_TYPE_DEFAULT && if (db_type > DB_TYPE_UNKNOWN && db_type < DB_TYPE_DEFAULT &&
installed_htons[db_type]) installed_htons[db_type])
return hton2plugin[installed_htons[db_type]->slot]->name.str; return hton2plugin[installed_htons[db_type]->slot]->name.str;
return "*NONE*"; /* fall through */
case DB_TYPE_UNKNOWN:
return "UNKNOWN";
} }
} }
static handler *create_default(TABLE_SHARE *table, MEM_ROOT *mem_root) static handler *create_default(TABLE_SHARE *table, MEM_ROOT *mem_root)
{ {
handlerton *hton=ha_resolve_by_legacy_type(current_thd, DB_TYPE_DEFAULT); handlerton *hton= ha_default_handlerton(current_thd);
return (hton && hton->create) ? hton->create(table, mem_root) : NULL; return (hton && hton->create) ? hton->create(table, mem_root) : NULL;
} }
@ -152,10 +189,7 @@ handlerton *ha_resolve_by_legacy_type(THD *thd, enum legacy_db_type db_type)
{ {
switch (db_type) { switch (db_type) {
case DB_TYPE_DEFAULT: case DB_TYPE_DEFAULT:
return (thd->variables.table_type != NULL) ? return ha_default_handlerton(thd);
thd->variables.table_type :
(global_system_variables.table_type != NULL ?
global_system_variables.table_type : &myisam_hton);
case DB_TYPE_UNKNOWN: case DB_TYPE_UNKNOWN:
return NULL; return NULL;
default: default:
@ -196,7 +230,7 @@ handlerton *ha_checktype(THD *thd, enum legacy_db_type database_type,
break; break;
} }
return ha_resolve_by_legacy_type(thd, DB_TYPE_DEFAULT); return ha_default_handlerton(thd);
} /* ha_checktype */ } /* ha_checktype */

7
sql/handler.h
View File

@ -667,10 +667,6 @@ struct handlerton
struct handler_iterator *fill_this_in); struct handler_iterator *fill_this_in);
}; };
struct show_table_alias_st {
const char *alias;
enum legacy_db_type type;
};
/* Possible flags of a handlerton */ /* Possible flags of a handlerton */
#define HTON_NO_FLAGS 0 #define HTON_NO_FLAGS 0
@ -1545,7 +1541,8 @@ extern ulong total_ha, total_ha_2pc;
#define ha_rollback(thd) (ha_rollback_trans((thd), TRUE)) #define ha_rollback(thd) (ha_rollback_trans((thd), TRUE))
/* lookups */ /* lookups */
handlerton *ha_resolve_by_name(THD *thd, LEX_STRING *name); handlerton *ha_default_handlerton(THD *thd);
handlerton *ha_resolve_by_name(THD *thd, const LEX_STRING *name);
handlerton *ha_resolve_by_legacy_type(THD *thd, enum legacy_db_type db_type); handlerton *ha_resolve_by_legacy_type(THD *thd, enum legacy_db_type db_type);
const char *ha_get_storage_engine(enum legacy_db_type db_type); const char *ha_get_storage_engine(enum legacy_db_type db_type);
handler *get_new_handler(TABLE_SHARE *share, MEM_ROOT *alloc, handler *get_new_handler(TABLE_SHARE *share, MEM_ROOT *alloc,

22
sql/sql_plugin.cc
View File

@ -23,7 +23,7 @@ extern struct st_mysql_plugin *mysqld_builtins[];
char *opt_plugin_dir_ptr; char *opt_plugin_dir_ptr;
char opt_plugin_dir[FN_REFLEN]; char opt_plugin_dir[FN_REFLEN];
LEX_STRING plugin_type_names[MYSQL_MAX_PLUGIN_TYPE_NUM]= const LEX_STRING plugin_type_names[MYSQL_MAX_PLUGIN_TYPE_NUM]=
{ {
{ (char *)STRING_WITH_LEN("UDF") }, { (char *)STRING_WITH_LEN("UDF") },
{ (char *)STRING_WITH_LEN("STORAGE ENGINE") }, { (char *)STRING_WITH_LEN("STORAGE ENGINE") },
@ -63,7 +63,7 @@ static HASH plugin_hash[MYSQL_MAX_PLUGIN_TYPE_NUM];
static rw_lock_t THR_LOCK_plugin; static rw_lock_t THR_LOCK_plugin;
static bool initialized= 0; static bool initialized= 0;
static struct st_plugin_dl *plugin_dl_find(LEX_STRING *dl) static struct st_plugin_dl *plugin_dl_find(const LEX_STRING *dl)
{ {
uint i; uint i;
DBUG_ENTER("plugin_dl_find"); DBUG_ENTER("plugin_dl_find");
@ -112,7 +112,7 @@ static inline void free_plugin_mem(struct st_plugin_dl *p)
my_free((gptr)p->plugins, MYF(MY_ALLOW_ZERO_PTR)); my_free((gptr)p->plugins, MYF(MY_ALLOW_ZERO_PTR));
} }
static st_plugin_dl *plugin_dl_add(LEX_STRING *dl, int report) static st_plugin_dl *plugin_dl_add(const LEX_STRING *dl, int report)
{ {
#ifdef HAVE_DLOPEN #ifdef HAVE_DLOPEN
char dlpath[FN_REFLEN]; char dlpath[FN_REFLEN];
@ -294,7 +294,7 @@ static st_plugin_dl *plugin_dl_add(LEX_STRING *dl, int report)
} }
static void plugin_dl_del(LEX_STRING *dl) static void plugin_dl_del(const LEX_STRING *dl)
{ {
#ifdef HAVE_DLOPEN #ifdef HAVE_DLOPEN
uint i; uint i;
@ -322,7 +322,7 @@ static void plugin_dl_del(LEX_STRING *dl)
} }
static struct st_plugin_int *plugin_find_internal(LEX_STRING *name, int type) static struct st_plugin_int *plugin_find_internal(const LEX_STRING *name, int type)
{ {
uint i; uint i;
DBUG_ENTER("plugin_find_internal"); DBUG_ENTER("plugin_find_internal");
@ -345,7 +345,7 @@ static struct st_plugin_int *plugin_find_internal(LEX_STRING *name, int type)
} }
my_bool plugin_is_ready(LEX_STRING *name, int type) my_bool plugin_is_ready(const LEX_STRING *name, int type)
{ {
my_bool rc= FALSE; my_bool rc= FALSE;
struct st_plugin_int *plugin; struct st_plugin_int *plugin;
@ -359,7 +359,7 @@ my_bool plugin_is_ready(LEX_STRING *name, int type)
} }
struct st_plugin_int *plugin_lock(LEX_STRING *name, int type) struct st_plugin_int *plugin_lock(const LEX_STRING *name, int type)
{ {
struct st_plugin_int *rc; struct st_plugin_int *rc;
DBUG_ENTER("plugin_lock"); DBUG_ENTER("plugin_lock");
@ -396,7 +396,7 @@ static st_plugin_int *plugin_insert_or_reuse(struct st_plugin_int *plugin)
struct st_plugin_int *)); struct st_plugin_int *));
} }
static my_bool plugin_add(LEX_STRING *name, LEX_STRING *dl, int report) static my_bool plugin_add(const LEX_STRING *name, const LEX_STRING *dl, int report)
{ {
struct st_plugin_int tmp; struct st_plugin_int tmp;
struct st_mysql_plugin *plugin; struct st_mysql_plugin *plugin;
@ -479,7 +479,7 @@ err:
} }
static void plugin_del(LEX_STRING *name) static void plugin_del(const LEX_STRING *name)
{ {
uint i; uint i;
struct st_plugin_int *plugin; struct st_plugin_int *plugin;
@ -811,7 +811,7 @@ void plugin_free(void)
} }
my_bool mysql_install_plugin(THD *thd, LEX_STRING *name, LEX_STRING *dl) my_bool mysql_install_plugin(THD *thd, const LEX_STRING *name, const LEX_STRING *dl)
{ {
TABLE_LIST tables; TABLE_LIST tables;
TABLE *table; TABLE *table;
@ -866,7 +866,7 @@ err:
} }
my_bool mysql_uninstall_plugin(THD *thd, LEX_STRING *name) my_bool mysql_uninstall_plugin(THD *thd, const LEX_STRING *name)
{ {
TABLE *table; TABLE *table;
TABLE_LIST tables; TABLE_LIST tables;

10
sql/sql_plugin.h
View File

@ -66,15 +66,15 @@ typedef int (*plugin_type_init)(struct st_plugin_int *);
extern char *opt_plugin_dir_ptr; extern char *opt_plugin_dir_ptr;
extern char opt_plugin_dir[FN_REFLEN]; extern char opt_plugin_dir[FN_REFLEN];
extern LEX_STRING plugin_type_names[]; extern const LEX_STRING plugin_type_names[];
extern int plugin_init(void); extern int plugin_init(void);
extern void plugin_load(void); extern void plugin_load(void);
extern void plugin_free(void); extern void plugin_free(void);
extern my_bool plugin_is_ready(LEX_STRING *name, int type); extern my_bool plugin_is_ready(const LEX_STRING *name, int type);
extern st_plugin_int *plugin_lock(LEX_STRING *name, int type); extern st_plugin_int *plugin_lock(const LEX_STRING *name, int type);
extern void plugin_unlock(struct st_plugin_int *plugin); extern void plugin_unlock(struct st_plugin_int *plugin);
extern my_bool mysql_install_plugin(THD *thd, LEX_STRING *name, LEX_STRING *dl); extern my_bool mysql_install_plugin(THD *thd, const LEX_STRING *name, const LEX_STRING *dl);
extern my_bool mysql_uninstall_plugin(THD *thd, LEX_STRING *name); extern my_bool mysql_uninstall_plugin(THD *thd, const LEX_STRING *name);
extern my_bool plugin_register_builtin(struct st_mysql_plugin *plugin); extern my_bool plugin_register_builtin(struct st_mysql_plugin *plugin);

2
sql/sql_tablespace.cc
View File

@ -30,7 +30,7 @@ int mysql_alter_tablespace(THD *thd, st_alter_tablespace *ts_info)
*/ */
if (hton == NULL || hton->state != SHOW_OPTION_YES) if (hton == NULL || hton->state != SHOW_OPTION_YES)
{ {
hton= ha_resolve_by_legacy_type(thd, DB_TYPE_DEFAULT); hton= ha_default_handlerton(thd);
if (ts_info->storage_engine != 0) if (ts_info->storage_engine != 0)
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_ERROR, push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_ERROR,
ER_WARN_USING_OTHER_HANDLER, ER_WARN_USING_OTHER_HANDLER,