postgresql/contrib/pg_trgm
Noah Misch 3a0d473192 Use wrappers of PG_DETOAST_DATUM_PACKED() more.
This makes almost all core code follow the policy introduced in the
previous commit.  Specific decisions:

- Text search support functions with char* and length arguments, such as
  prsstart and lexize, may receive unaligned strings.  I doubt
  maintainers of non-core text search code will notice.

- Use plain VARDATA() on values detoasted or synthesized earlier in the
  same function.  Use VARDATA_ANY() on varlenas sourced outside the
  function, even if they happen to always have four-byte headers.  As an
  exception, retain the universal practice of using VARDATA() on return
  values of SendFunctionCall().

- Retain PG_GETARG_BYTEA_P() in pageinspect.  (Page images are too large
  for a one-byte header, so this misses no optimization.)  Sites that do
  not call get_page_from_raw() typically need the four-byte alignment.

- For now, do not change btree_gist.  Its use of four-byte headers in
  memory is partly entangled with storage of 4-byte headers inside
  GBT_VARKEY, on disk.

- For now, do not change gtrgm_consistent() or gtrgm_distance().  They
  incorporate the varlena header into a cache, and there are multiple
  credible implementation strategies to consider.
2017-03-12 19:35:34 -04:00
..
data Add files forgotten in f576b17cd6 2016-03-16 19:23:41 +03:00
expected Fix contrib/pg_trgm's extraction of trigrams from regular expressions. 2017-02-22 15:04:26 -05:00
sql Fix contrib/pg_trgm's extraction of trigrams from regular expressions. 2017-02-22 15:04:26 -05:00
.gitignore
Makefile Handle contrib's GIN/GIST support function signature changes honestly. 2016-06-09 16:44:25 -04:00
pg_trgm--1.0--1.1.sql
pg_trgm--1.1--1.2.sql Add word_similarity to pg_trgm contrib module. 2016-03-16 18:59:21 +03:00
pg_trgm--1.2--1.3.sql pg_trgm's set_limit() function is parallel unsafe, not parallel restricted. 2016-06-20 11:29:54 -04:00
pg_trgm--1.3.sql pg_trgm's set_limit() function is parallel unsafe, not parallel restricted. 2016-06-20 11:29:54 -04:00
pg_trgm--unpackaged--1.0.sql
pg_trgm.control Handle contrib's GIN/GIST support function signature changes honestly. 2016-06-09 16:44:25 -04:00
trgm_gin.c Use wrappers of PG_DETOAST_DATUM_PACKED() more. 2017-03-12 19:35:34 -04:00
trgm_gist.c Use wrappers of PG_DETOAST_DATUM_PACKED() more. 2017-03-12 19:35:34 -04:00
trgm_op.c Use wrappers of PG_DETOAST_DATUM_PACKED() more. 2017-03-12 19:35:34 -04:00
trgm_regexp.c Fix contrib/pg_trgm's extraction of trigrams from regular expressions. 2017-02-22 15:04:26 -05:00
trgm.h Add word_similarity to pg_trgm contrib module. 2016-03-16 18:59:21 +03:00