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| author | Peter Eisentraut <peter@eisentraut.org> | 2024-09-17 10:19:26 +0200 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2024-09-17 11:29:29 +0200 |
| commit | 7406ab623fee1addcb21c881afecbe638a0d56e9 (patch) | |
| tree | 6c75a0f795ecec184e0cb9dcd05ed74bd324a6c6 /src/backend/access/gist | |
| parent | 95d6e9af07d2e5af2fdd272e72b5b552bad3ea0a (diff) | |
| download | postgresql-7406ab623fee1addcb21c881afecbe638a0d56e9.tar.gz postgresql-7406ab623fee1addcb21c881afecbe638a0d56e9.zip | |
Add stratnum GiST support function
This is support function 12 for the GiST AM and translates
"well-known" RT*StrategyNumber values into whatever strategy number is
used by the opclass (since no particular numbers are actually
required). We will use this to support temporal PRIMARY
KEY/UNIQUE/FOREIGN KEY/FOR PORTION OF functionality.
This commit adds two implementations, one for internal GiST opclasses
(just an identity function) and another for btree_gist opclasses. It
updates btree_gist from 1.7 to 1.8, adding the support function for
all its opclasses.
(previously committed as 6db4598fcb8, reverted by 8aee330af55; this is
essentially unchanged from those)
Author: Paul A. Jungwirth <pj@illuminatedcomputing.com>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: jian he <jian.universality@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CA+renyUApHgSZF9-nd-a0+OPGharLQLO=mDHcY4_qQ0+noCUVg@mail.gmail.com
Diffstat (limited to 'src/backend/access/gist')
| -rw-r--r-- | src/backend/access/gist/gistutil.c | 14 | ||||
| -rw-r--r-- | src/backend/access/gist/gistvalidate.c | 8 |
2 files changed, 21 insertions, 1 deletions
diff --git a/src/backend/access/gist/gistutil.c b/src/backend/access/gist/gistutil.c index 78e98d68b15..8686735f234 100644 --- a/src/backend/access/gist/gistutil.c +++ b/src/backend/access/gist/gistutil.c @@ -21,6 +21,7 @@ #include "common/pg_prng.h" #include "storage/indexfsm.h" #include "utils/float.h" +#include "utils/fmgrprotos.h" #include "utils/lsyscache.h" #include "utils/rel.h" #include "utils/snapmgr.h" @@ -1055,3 +1056,16 @@ gistGetFakeLSN(Relation rel) return GetFakeLSNForUnloggedRel(); } } + +/* + * Returns the same number that was received. + * + * This is for GiST opclasses that use the RT*StrategyNumber constants. + */ +Datum +gist_stratnum_identity(PG_FUNCTION_ARGS) +{ + StrategyNumber strat = PG_GETARG_UINT16(0); + + PG_RETURN_UINT16(strat); +} diff --git a/src/backend/access/gist/gistvalidate.c b/src/backend/access/gist/gistvalidate.c index 36b5a85cf31..0901543a60a 100644 --- a/src/backend/access/gist/gistvalidate.c +++ b/src/backend/access/gist/gistvalidate.c @@ -146,6 +146,10 @@ gistvalidate(Oid opclassoid) ok = check_amproc_signature(procform->amproc, VOIDOID, true, 1, 1, INTERNALOID); break; + case GIST_STRATNUM_PROC: + ok = check_amproc_signature(procform->amproc, INT2OID, true, + 1, 1, INT2OID); + break; default: ereport(INFO, (errcode(ERRCODE_INVALID_OBJECT_DEFINITION), @@ -266,7 +270,8 @@ gistvalidate(Oid opclassoid) continue; /* got it */ if (i == GIST_DISTANCE_PROC || i == GIST_FETCH_PROC || i == GIST_COMPRESS_PROC || i == GIST_DECOMPRESS_PROC || - i == GIST_OPTIONS_PROC || i == GIST_SORTSUPPORT_PROC) + i == GIST_OPTIONS_PROC || i == GIST_SORTSUPPORT_PROC || + i == GIST_STRATNUM_PROC) continue; /* optional methods */ ereport(INFO, (errcode(ERRCODE_INVALID_OBJECT_DEFINITION), @@ -338,6 +343,7 @@ gistadjustmembers(Oid opfamilyoid, case GIST_FETCH_PROC: case GIST_OPTIONS_PROC: case GIST_SORTSUPPORT_PROC: + case GIST_STRATNUM_PROC: /* Optional, so force it to be a soft family dependency */ op->ref_is_hard = false; op->ref_is_family = true; |