2002-12-12 13:14:23 +01:00
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/* -*- C++ -*- */
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/* Copyright (C) 2002 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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2006-12-23 20:17:15 +01:00
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the Free Software Foundation; version 2 of the License.
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2002-12-12 13:14:23 +01:00
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef _SP_H_
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#define _SP_H_
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2003-11-20 15:07:22 +01:00
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// Return codes from sp_create_*, sp_drop_*, and sp_show_*:
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2003-02-21 17:37:05 +01:00
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#define SP_OK 0
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#define SP_KEY_NOT_FOUND -1
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#define SP_OPEN_TABLE_FAILED -2
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#define SP_WRITE_ROW_FAILED -3
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#define SP_DELETE_ROW_FAILED -4
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#define SP_GET_FIELD_FAILED -5
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#define SP_PARSE_ERROR -6
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2003-11-20 15:07:22 +01:00
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#define SP_INTERNAL_ERROR -7
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2004-06-15 15:42:28 +02:00
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#define SP_NO_DB_ERROR -8
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2005-05-31 18:36:32 +02:00
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#define SP_BAD_IDENTIFIER -9
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2005-07-26 18:08:49 -07:00
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#define SP_BODY_TOO_LONG -10
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2003-02-21 17:37:05 +01:00
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2004-03-22 14:44:41 +01:00
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/* Drop all routines in database 'db' */
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int
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sp_drop_db_routines(THD *thd, char *db);
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2002-12-12 13:14:23 +01:00
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sp_head *
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2005-11-23 01:11:19 +02:00
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sp_find_routine(THD *thd, int type, sp_name *name,
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sp_cache **cp, bool cache_only);
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2002-12-12 13:14:23 +01:00
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2004-12-23 10:46:24 +00:00
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int
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2006-01-26 13:29:46 +01:00
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sp_exist_routines(THD *thd, TABLE_LIST *procs, bool any, bool no_error);
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int
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sp_routine_exists_in_table(THD *thd, int type, sp_name *name);
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2004-12-23 10:46:24 +00:00
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2007-05-29 21:22:33 +04:00
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bool
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sp_show_create_routine(THD *thd, int type, sp_name *name);
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2003-02-21 17:37:05 +01:00
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2003-11-17 21:21:36 +04:00
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int
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2007-05-29 21:22:33 +04:00
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sp_show_status_routine(THD *thd, int type, const char *wild);
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2003-11-17 21:21:36 +04:00
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int
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2007-05-29 21:22:33 +04:00
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sp_create_routine(THD *thd, int type, sp_head *sp);
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2003-11-17 21:21:36 +04:00
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int
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2007-05-29 21:22:33 +04:00
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sp_update_routine(THD *thd, int type, sp_name *name, st_sp_chistics *chistics);
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2003-11-17 21:21:36 +04:00
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2003-02-04 17:40:18 +01:00
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int
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2007-05-29 21:22:33 +04:00
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sp_drop_routine(THD *thd, int type, sp_name *name);
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2003-03-02 19:17:41 +01:00
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2005-02-08 20:52:50 +01:00
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/*
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2005-07-09 21:51:59 +04:00
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Procedures for pre-caching of stored routines and building table list
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for prelocking.
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*/
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2005-08-03 03:37:32 +00:00
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void sp_get_prelocking_info(THD *thd, bool *need_prelocking,
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bool *first_no_prelocking);
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2005-07-09 23:11:17 +04:00
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void sp_add_used_routine(LEX *lex, Query_arena *arena,
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2005-07-09 21:51:59 +04:00
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sp_name *rt, char rt_type);
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2005-09-15 03:56:09 +04:00
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void sp_remove_not_own_routines(LEX *lex);
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2005-07-09 21:51:59 +04:00
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void sp_update_sp_used_routines(HASH *dst, HASH *src);
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2005-12-07 12:47:25 +03:00
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int sp_cache_routines_and_add_tables(THD *thd, LEX *lex,
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2006-07-26 12:40:26 +02:00
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bool first_no_prelock);
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2005-10-26 15:34:57 +02:00
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int sp_cache_routines_and_add_tables_for_view(THD *thd, LEX *lex,
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2005-12-07 12:47:25 +03:00
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TABLE_LIST *view);
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2005-10-26 15:34:57 +02:00
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int sp_cache_routines_and_add_tables_for_triggers(THD *thd, LEX *lex,
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2005-12-07 12:47:25 +03:00
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TABLE_LIST *table);
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2005-07-09 21:51:59 +04:00
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WL#3817: Simplify string / memory area types and make things more consistent (first part)
The following type conversions was done:
- Changed byte to uchar
- Changed gptr to uchar*
- Change my_string to char *
- Change my_size_t to size_t
- Change size_s to size_t
Removed declaration of byte, gptr, my_string, my_size_t and size_s.
Following function parameter changes was done:
- All string functions in mysys/strings was changed to use size_t
instead of uint for string lengths.
- All read()/write() functions changed to use size_t (including vio).
- All protocoll functions changed to use size_t instead of uint
- Functions that used a pointer to a string length was changed to use size_t*
- Changed malloc(), free() and related functions from using gptr to use void *
as this requires fewer casts in the code and is more in line with how the
standard functions work.
- Added extra length argument to dirname_part() to return the length of the
created string.
- Changed (at least) following functions to take uchar* as argument:
- db_dump()
- my_net_write()
- net_write_command()
- net_store_data()
- DBUG_DUMP()
- decimal2bin() & bin2decimal()
- Changed my_compress() and my_uncompress() to use size_t. Changed one
argument to my_uncompress() from a pointer to a value as we only return
one value (makes function easier to use).
- Changed type of 'pack_data' argument to packfrm() to avoid casts.
- Changed in readfrm() and writefrom(), ha_discover and handler::discover()
the type for argument 'frmdata' to uchar** to avoid casts.
- Changed most Field functions to use uchar* instead of char* (reduced a lot of
casts).
- Changed field->val_xxx(xxx, new_ptr) to take const pointers.
Other changes:
- Removed a lot of not needed casts
- Added a few new cast required by other changes
- Added some cast to my_multi_malloc() arguments for safety (as string lengths
needs to be uint, not size_t).
- Fixed all calls to hash-get-key functions to use size_t*. (Needed to be done
explicitely as this conflict was often hided by casting the function to
hash_get_key).
- Changed some buffers to memory regions to uchar* to avoid casts.
- Changed some string lengths from uint to size_t.
- Changed field->ptr to be uchar* instead of char*. This allowed us to
get rid of a lot of casts.
- Some changes from true -> TRUE, false -> FALSE, unsigned char -> uchar
- Include zlib.h in some files as we needed declaration of crc32()
- Changed MY_FILE_ERROR to be (size_t) -1.
- Changed many variables to hold the result of my_read() / my_write() to be
size_t. This was needed to properly detect errors (which are
returned as (size_t) -1).
- Removed some very old VMS code
- Changed packfrm()/unpackfrm() to not be depending on uint size
(portability fix)
- Removed windows specific code to restore cursor position as this
causes slowdown on windows and we should not mix read() and pread()
calls anyway as this is not thread safe. Updated function comment to
reflect this. Changed function that depended on original behavior of
my_pwrite() to itself restore the cursor position (one such case).
- Added some missing checking of return value of malloc().
- Changed definition of MOD_PAD_CHAR_TO_FULL_LENGTH to avoid 'long' overflow.
- Changed type of table_def::m_size from my_size_t to ulong to reflect that
m_size is the number of elements in the array, not a string/memory
length.
- Moved THD::max_row_length() to table.cc (as it's not depending on THD).
Inlined max_row_length_blob() into this function.
- More function comments
- Fixed some compiler warnings when compiled without partitions.
- Removed setting of LEX_STRING() arguments in declaration (portability fix).
- Some trivial indentation/variable name changes.
- Some trivial code simplifications:
- Replaced some calls to alloc_root + memcpy to use
strmake_root()/strdup_root().
- Changed some calls from memdup() to strmake() (Safety fix)
- Simpler loops in client-simple.c
2007-05-10 12:59:39 +03:00
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extern "C" uchar* sp_sroutine_key(const uchar *ptr, size_t *plen,
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my_bool first);
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2004-03-11 17:18:59 +01:00
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2005-08-08 17:46:06 +04:00
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/*
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Routines which allow open/lock and close mysql.proc table even when
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we already have some tables open and locked.
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*/
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TABLE *open_proc_table_for_read(THD *thd, Open_tables_state *backup);
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2004-03-11 17:18:59 +01:00
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A fix and a test case for
Bug#19022 "Memory bug when switching db during trigger execution"
Bug#17199 "Problem when view calls function from another database."
Bug#18444 "Fully qualified stored function names don't work correctly in
SELECT statements"
Documentation note: this patch introduces a change in behaviour of prepared
statements.
This patch adds a few new invariants with regard to how THD::db should
be used. These invariants should be preserved in future:
- one should never refer to THD::db by pointer and always make a deep copy
(strmake, strdup)
- one should never compare two databases by pointer, but use strncmp or
my_strncasecmp
- TABLE_LIST object table->db should be always initialized in the parser or
by creator of the object.
For prepared statements it means that if the current database is changed
after a statement is prepared, the database that was current at prepare
remains active. This also means that you can not prepare a statement that
implicitly refers to the current database if the latter is not set.
This is not documented, and therefore needs documentation. This is NOT a
change in behavior for almost all SQL statements except:
- ALTER TABLE t1 RENAME t2
- OPTIMIZE TABLE t1
- ANALYZE TABLE t1
- TRUNCATE TABLE t1 --
until this patch t1 or t2 could be evaluated at the first execution of
prepared statement.
CURRENT_DATABASE() still works OK and is evaluated at every execution
of prepared statement.
Note, that in stored routines this is not an issue as the default
database is the database of the stored procedure and "use" statement
is prohibited in stored routines.
This patch makes obsolete the use of check_db_used (it was never used in the
old code too) and all other places that check for table->db and assign it
from THD::db if it's NULL, except the parser.
How this patch was created: THD::{db,db_length} were replaced with a
LEX_STRING, THD::db. All the places that refer to THD::{db,db_length} were
manually checked and:
- if the place uses thd->db by pointer, it was fixed to make a deep copy
- if a place compared two db pointers, it was fixed to compare them by value
(via strcmp/my_strcasecmp, whatever was approproate)
Then this intermediate patch was used to write a smaller patch that does the
same thing but without a rename.
TODO in 5.1:
- remove check_db_used
- deploy THD::set_db in mysql_change_db
See also comments to individual files.
2006-06-27 00:47:52 +04:00
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/*
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Do a "use new_db". The current db is stored at old_db. If new_db is the
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same as the current one, nothing is changed. dbchangedp is set to true if
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the db was actually changed.
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*/
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2004-03-11 17:18:59 +01:00
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int
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A fix and a test case for
Bug#19022 "Memory bug when switching db during trigger execution"
Bug#17199 "Problem when view calls function from another database."
Bug#18444 "Fully qualified stored function names don't work correctly in
SELECT statements"
Documentation note: this patch introduces a change in behaviour of prepared
statements.
This patch adds a few new invariants with regard to how THD::db should
be used. These invariants should be preserved in future:
- one should never refer to THD::db by pointer and always make a deep copy
(strmake, strdup)
- one should never compare two databases by pointer, but use strncmp or
my_strncasecmp
- TABLE_LIST object table->db should be always initialized in the parser or
by creator of the object.
For prepared statements it means that if the current database is changed
after a statement is prepared, the database that was current at prepare
remains active. This also means that you can not prepare a statement that
implicitly refers to the current database if the latter is not set.
This is not documented, and therefore needs documentation. This is NOT a
change in behavior for almost all SQL statements except:
- ALTER TABLE t1 RENAME t2
- OPTIMIZE TABLE t1
- ANALYZE TABLE t1
- TRUNCATE TABLE t1 --
until this patch t1 or t2 could be evaluated at the first execution of
prepared statement.
CURRENT_DATABASE() still works OK and is evaluated at every execution
of prepared statement.
Note, that in stored routines this is not an issue as the default
database is the database of the stored procedure and "use" statement
is prohibited in stored routines.
This patch makes obsolete the use of check_db_used (it was never used in the
old code too) and all other places that check for table->db and assign it
from THD::db if it's NULL, except the parser.
How this patch was created: THD::{db,db_length} were replaced with a
LEX_STRING, THD::db. All the places that refer to THD::{db,db_length} were
manually checked and:
- if the place uses thd->db by pointer, it was fixed to make a deep copy
- if a place compared two db pointers, it was fixed to compare them by value
(via strcmp/my_strcasecmp, whatever was approproate)
Then this intermediate patch was used to write a smaller patch that does the
same thing but without a rename.
TODO in 5.1:
- remove check_db_used
- deploy THD::set_db in mysql_change_db
See also comments to individual files.
2006-06-27 00:47:52 +04:00
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sp_use_new_db(THD *thd, LEX_STRING new_db, LEX_STRING *old_db,
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2004-06-08 18:41:18 +02:00
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bool no_access_check, bool *dbchangedp);
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2004-03-11 17:18:59 +01:00
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2002-12-12 13:14:23 +01:00
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#endif /* _SP_H_ */
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