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Add construct_array_builtin, deconstruct_array_builtin

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There were many calls to construct_array() and deconstruct_array() for
built-in types, for example, when dealing with system catalog columns.
These all hardcoded the type attributes necessary to pass to these
functions.

To simplify this a bit, add construct_array_builtin(),
deconstruct_array_builtin() as wrappers that centralize this hardcoded
knowledge.  This simplifies many call sites and reduces the amount of
hardcoded stuff that is spread around.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/2914356f-9e5f-8c59-2995-5997fc48bcba%40enterprisedb.com
This commit is contained in:
Peter Eisentraut
2022-07-01 10:51:45 +02:00
parent 7c2d6f8d34
commit d746021de1
51 changed files with 284 additions and 298 deletions
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10
src/backend/utils/adt/lockfuncs.c
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@@ -538,10 +538,7 @@ pg_blocking_pids(PG_FUNCTION_ARGS)
/* Assert we didn't overrun arrayelems[] */
Assert(narrayelems <= lockData->nlocks);
/* Construct array, using hardwired knowledge about int4 type */
PG_RETURN_ARRAYTYPE_P(construct_array(arrayelems, narrayelems,
INT4OID,
sizeof(int32), true, TYPALIGN_INT));
PG_RETURN_ARRAYTYPE_P(construct_array_builtin(arrayelems, narrayelems, INT4OID));
}
@@ -579,10 +576,7 @@ pg_safe_snapshot_blocking_pids(PG_FUNCTION_ARGS)
else
blocker_datums = NULL;
/* Construct array, using hardwired knowledge about int4 type */
PG_RETURN_ARRAYTYPE_P(construct_array(blocker_datums, num_blockers,
INT4OID,
sizeof(int32), true, TYPALIGN_INT));
PG_RETURN_ARRAYTYPE_P(construct_array_builtin(blocker_datums, num_blockers, INT4OID));
}