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Change the name of the Result Cache node to Memoize

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"Result Cache" was never a great name for this node, but nobody managed
to come up with another name that anyone liked enough.  That was until
David Johnston mentioned "Node Memoization", which Tom Lane revised to
just "Memoize".  People seem to like "Memoize", so let's do the rename.

Reviewed-by: Justin Pryzby
Discussion: https://postgr.es/m/20210708165145.GG1176@momjian.us
Backpatch-through: 14, where Result Cache was introduced
This commit is contained in:
David Rowley
2021-07-14 12:43:58 +12:00
parent d68a003912
commit 83f4fcc655
43 changed files with 594 additions and 605 deletions
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18
src/backend/optimizer/plan/initsplan.c
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@ -78,7 +78,7 @@ static bool check_equivalence_delay(PlannerInfo *root,
static bool check_redundant_nullability_qual(PlannerInfo *root, Node *clause);
static void check_mergejoinable(RestrictInfo *restrictinfo);
static void check_hashjoinable(RestrictInfo *restrictinfo);
static void check_resultcacheable(RestrictInfo *restrictinfo);
static void check_memoizable(RestrictInfo *restrictinfo);
/*****************************************************************************
@ -2212,10 +2212,10 @@ distribute_restrictinfo_to_rels(PlannerInfo *root,
/*
* Likewise, check if the clause is suitable to be used with a
* Result Cache node to cache inner tuples during a parameterized
* Memoize node to cache inner tuples during a parameterized
* nested loop.
*/
check_resultcacheable(restrictinfo);
check_memoizable(restrictinfo);
/*
* Add clause to the join lists of all the relevant relations.
@ -2459,7 +2459,7 @@ build_implied_join_equality(PlannerInfo *root,
/* Set mergejoinability/hashjoinability flags */
check_mergejoinable(restrictinfo);
check_hashjoinable(restrictinfo);
check_resultcacheable(restrictinfo);
check_memoizable(restrictinfo);
return restrictinfo;
}
@ -2709,13 +2709,13 @@ check_hashjoinable(RestrictInfo *restrictinfo)
}
/*
* check_resultcacheable
* If the restrictinfo's clause is suitable to be used for a Result Cache
* node, set the hasheqoperator to the hash equality operator that will be
* needed during caching.
* check_memoizable
* If the restrictinfo's clause is suitable to be used for a Memoize node,
* set the hasheqoperator to the hash equality operator that will be needed
* during caching.
*/
static void
check_resultcacheable(RestrictInfo *restrictinfo)
check_memoizable(RestrictInfo *restrictinfo)
{
TypeCacheEntry *typentry;
Expr *clause = restrictinfo->clause;