postgresql/src
Michael Paquier dde5b01c33 Fix various issues with ALTER TEXT SEARCH CONFIGURATION
This commit addresses a set of issues when changing token type mappings
in a text search configuration when using duplicated token names:
- ADD MAPPING would fail on insertion because of a constraint failure
after inserting the same mapping.
- ALTER MAPPING with an "overridden" configuration failed with "tuple
already updated by self" when the token mappings are removed.
- DROP MAPPING failed with "tuple already updated by self", like
previously, but in a different code path.

The code is refactored so the token names (with their numbers) are
handled as a List with unique members rather than an array with numbers,
ensuring that no duplicates mess up with the catalog inserts, updates
and deletes.  The list is generated by getTokenTypes(), with the same
error handling as previously while duplicated tokens are discarded from
the list used to work on the catalogs.

Regression tests are expanded to cover much more ground for the cases
fixed by this commit, as there was no coverage for the code touched in
this commit.  A bit more is done regarding the fact that a token name
not supported by a configuration's parser should result in an error even
if IF EXISTS is used in a DROP MAPPING clause.  This is implied in the
code but there was no coverage for that, and it was very easy to miss.

These issues exist since at least their introduction in core with
140d4ebcb4, so backpatch all the way down.

Reported-by: Alexander Lakhin
Author: Tender Wang, Michael Paquier
Discussion: https://postgr.es/m/18310-1eb233c5908189c8@postgresql.org
Backpatch-through: 12
2024-01-31 13:16:47 +09:00
..
backend Fix various issues with ALTER TEXT SEARCH CONFIGURATION 2024-01-31 13:16:47 +09:00
bin Fix 003_extrafiles.pl test for the Windows 2024-01-30 17:12:20 -05:00
common Improve pglz_decompress's defenses against corrupt compressed data. 2023-10-18 20:43:17 -04:00
fe_utils Don't spuriously report FD_SETSIZE exhaustion on Windows. 2023-10-14 15:54:49 -07:00
include Add try_index_open(), conditional variant of index_open() 2024-01-18 15:04:39 +09:00
interfaces Don't test already-referenced pointer for nullness 2024-01-16 12:27:52 +01:00
makefiles Add NO_INSTALL option to pgxs 2021-05-27 13:58:29 +02:00
pl Fix plpgsql to allow new-style SQL CREATE FUNCTION as a SQL command. 2024-01-18 16:10:57 -05:00
port Fix detection of unseekable files for fseek() and ftello() with MSVC 2023-04-12 09:09:58 +09:00
template On NetBSD, force dynamic symbol resolution at postmaster start. 2022-08-30 17:29:03 -04:00
test Fix various issues with ALTER TEXT SEARCH CONFIGURATION 2024-01-31 13:16:47 +09:00
timezone Remove PHOT from our default timezone abbreviations list. 2023-10-28 11:55:06 -04:00
tools Fix various issues with ALTER TEXT SEARCH CONFIGURATION 2024-01-31 13:16:47 +09:00
tutorial Doc: sync src/tutorial/basics.source with SGML documentation. 2022-11-19 13:09:14 -05:00
.gitignore Convert cvsignore to gitignore, and add .gitignore for build targets. 2010-09-22 12:57:04 +02:00
DEVELOPERS Replace a couple of references to files that no longer exist in the source 2009-05-04 08:08:47 +00:00
Makefile Remove the option to build thread_test.c outside configure. 2020-10-21 12:08:48 -04:00
Makefile.global.in Suppress macOS warnings about duplicate libraries in link commands. 2023-09-29 14:07:30 -04:00
Makefile.shlib Stop using "-multiply_defined suppress" on macOS. 2023-09-26 21:06:21 -04:00
nls-global.mk Add errhint_plural() function and make use of it 2021-03-31 09:16:25 +02:00