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Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys


innobase/btr/btr0cur.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/dict/dict0crea.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/dict/dict0dict.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/dict/dict0load.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/dict/dict0mem.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/btr0btr.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/dict0mem.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/ibuf0ibuf.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/os0file.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/os0sync.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/row0mysql.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/row0upd.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/sync0sync.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/trx0sys.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/trx0trx.h:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/ibuf0ibuf.ic:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/os0sync.ic:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/sync0sync.ic:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/include/trx0sys.ic:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/lock/lock0lock.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/pars/pars0opt.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/que/que0que.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/row/row0ins.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/row/row0mysql.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/row/row0sel.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/row/row0upd.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/srv/srv0srv.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/sync/sync0sync.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/trx/trx0sys.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
innobase/trx/trx0trx.c:
  Implement ON DELETE CASCADE and facilitate switching off of UNIQUE constraints and foreign keys
This commit is contained in:
unknown 2002-04-18 10:40:32 +03:00
commit 209a500df9
30 changed files with 768 additions and 178 deletions
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32
innobase/include/dict0mem.h
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@ -249,6 +249,8 @@ struct dict_foreign_struct{
this memory heap */
char* id; /* id of the constraint as a
null-terminated string */
ulint type; /* 0 or DICT_FOREIGN_ON_DELETE_CASCADE
or DICT_FOREIGN_ON_DELETE_SET_NULL */
char* foreign_table_name;/* foreign table name */
dict_table_t* foreign_table; /* table where the foreign key is */
char** foreign_col_names;/* names of the columns in the
@ -278,6 +280,9 @@ struct dict_foreign_struct{
table */
};
#define DICT_FOREIGN_ON_DELETE_CASCADE 1
#define DICT_FOREIGN_ON_DELETE_SET_NULL 2
#define DICT_INDEX_MAGIC_N 76789786
/* Data structure for a database table */
@ -313,6 +318,12 @@ struct dict_table_struct{
NOT allowed until this count gets to zero;
MySQL does NOT itself check the number of
open handles at drop */
ulint n_foreign_key_checks_running;
/* count of how many foreign key check
operations are currently being performed
on the table: we cannot drop the table while
there are foreign key checks running on
it! */
ibool cached; /* TRUE if the table object has been added
to the dictionary cache */
lock_t* auto_inc_lock;/* a buffer for an auto-inc lock
@ -359,17 +370,16 @@ struct dict_table_struct{
after database startup or table creation */
ulint stat_modified_counter;
/* when a row is inserted, updated, or deleted,
we add the row length to this number; we
calculate new estimates for the stat_...
values for the table and the indexes at an
interval of 2 GB or when about 1 / 16 of table
has been modified; also
when the estimate operation is called
for MySQL SHOW TABLE STATUS; the counter is
reset to zero at statistics calculation;
this counter
is not protected by any latch, because this
is only used for heuristics */
we add 1 to this number; we calculate new
estimates for the stat_... values for the
table and the indexes at an interval of 2 GB
or when about 1 / 16 of table has been
modified; also when the estimate operation is
called for MySQL SHOW TABLE STATUS; the
counter is reset to zero at statistics
calculation; this counter is not protected by
any latch, because this is only used for
heuristics */
/*----------------------*/
mutex_t autoinc_mutex;
/* mutex protecting the autoincrement