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Add macro RelationIsPermanent() to report relation permanence

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Previously, to check relation permanence, the Relation's Form_pg_class
structure member relpersistence was compared to the value
RELPERSISTENCE_PERMANENT ("p"). This commit adds the macro
RelationIsPermanent() and is used in appropirate places to simplify the
code.  This matches other RelationIs* macros.

This macro will be used in more places in future cluster file encryption
patches.

Discussion: https://postgr.es/m/20210318153134.GH20766@tamriel.snowman.net
This commit is contained in:
Bruce Momjian
2021-03-22 20:22:48 -04:00
parent 8e4b332e88
commit 95d77149c5
8 changed files with 19 additions and 15 deletions
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3
src/backend/optimizer/util/plancat.c
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@@ -126,8 +126,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
relation = table_open(relationObjectId, NoLock);
/* Temporary and unlogged relations are inaccessible during recovery. */
if (relation->rd_rel->relpersistence != RELPERSISTENCE_PERMANENT &&
RecoveryInProgress())
if (!RelationIsPermanent(relation) && RecoveryInProgress())
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot access temporary or unlogged relations during recovery")));