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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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24
src/backend/commands/extension.c
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@ -2251,9 +2251,7 @@ convert_requires_to_datum(List *requires)
datums[ndatums++] =
DirectFunctionCall1(namein, CStringGetDatum(curreq));
}
a = construct_array(datums, ndatums,
NAMEOID,
NAMEDATALEN, false, TYPALIGN_CHAR);
a = construct_array_builtin(datums, ndatums, NAMEOID);
return PointerGetDatum(a);
}
@ -2433,9 +2431,7 @@ pg_extension_config_dump(PG_FUNCTION_ARGS)
arrayLength = 0;
arrayIndex = 1;
a = construct_array(&elementDatum, 1,
OIDOID,
sizeof(Oid), true, TYPALIGN_INT);
a = construct_array_builtin(&elementDatum, 1, OIDOID);
}
else
{
@ -2486,9 +2482,7 @@ pg_extension_config_dump(PG_FUNCTION_ARGS)
if (arrayLength != 0)
elog(ERROR, "extconfig and extcondition arrays do not match");
a = construct_array(&elementDatum, 1,
TEXTOID,
-1, false, TYPALIGN_INT);
a = construct_array_builtin(&elementDatum, 1, TEXTOID);
}
else
{
@ -2630,14 +2624,12 @@ extension_config_remove(Oid extensionoid, Oid tableoid)
int i;
/* We already checked there are no nulls */
deconstruct_array(a, OIDOID, sizeof(Oid), true, TYPALIGN_INT,
&dvalues, NULL, &nelems);
deconstruct_array_builtin(a, OIDOID, &dvalues, NULL, &nelems);
for (i = arrayIndex; i < arrayLength - 1; i++)
dvalues[i] = dvalues[i + 1];
a = construct_array(dvalues, arrayLength - 1,
OIDOID, sizeof(Oid), true, TYPALIGN_INT);
a = construct_array_builtin(dvalues, arrayLength - 1, OIDOID);
repl_val[Anum_pg_extension_extconfig - 1] = PointerGetDatum(a);
}
@ -2676,14 +2668,12 @@ extension_config_remove(Oid extensionoid, Oid tableoid)
int i;
/* We already checked there are no nulls */
deconstruct_array(a, TEXTOID, -1, false, TYPALIGN_INT,
&dvalues, NULL, &nelems);
deconstruct_array_builtin(a, TEXTOID, &dvalues, NULL, &nelems);
for (i = arrayIndex; i < arrayLength - 1; i++)
dvalues[i] = dvalues[i + 1];
a = construct_array(dvalues, arrayLength - 1,
TEXTOID, -1, false, TYPALIGN_INT);
a = construct_array_builtin(dvalues, arrayLength - 1, TEXTOID);
repl_val[Anum_pg_extension_extcondition - 1] = PointerGetDatum(a);
}