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Replace get_equal_strategy_number_for_am() by get_equal_strategy_number()

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get_equal_strategy_number_for_am() gets the equal strategy number for
an AM.  This currently only supports btree and hash.  In the more
general case, this also depends on the operator class (see for example
GistTranslateStratnum()).  To support that, replace this function with
get_equal_strategy_number() that takes an opclass and derives it from
there.  (This function already existed before as a static function, so
the signature is kept for simplicity.)

This patch is only a refactoring, it doesn't add support for other
index AMs such as gist.  This will be done separately.

Reviewed-by: Paul Jungwirth <pj@illuminatedcomputing.com>
Reviewed-by: vignesh C <vignesh21@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CA+renyUApHgSZF9-nd-a0+OPGharLQLO=mDHcY4_qQ0+noCUVg@mail.gmail.com
This commit is contained in:
Peter Eisentraut
2024-12-10 12:53:27 +01:00
parent 321c287351
commit a2a475b011
3 changed files with 18 additions and 20 deletions
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17
src/backend/executor/execReplication.c
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@@ -39,7 +39,7 @@ static bool tuples_equal(TupleTableSlot *slot1, TupleTableSlot *slot2,
/*
* Returns the fixed strategy number, if any, of the equality operator for the
* given index access method, otherwise, InvalidStrategy.
* given operator class, otherwise, InvalidStrategy.
*
* Currently, only Btree and Hash indexes are supported. The other index access
* methods don't have a fixed strategy for equality operation - instead, the
@@ -47,8 +47,9 @@ static bool tuples_equal(TupleTableSlot *slot1, TupleTableSlot *slot2,
* according to the operator class's definition.
*/
StrategyNumber
get_equal_strategy_number_for_am(Oid am)
get_equal_strategy_number(Oid opclass)
{
Oid am = get_opclass_method(opclass);
int ret;
switch (am)
@@ -68,18 +69,6 @@ get_equal_strategy_number_for_am(Oid am)
return ret;
}
/*
* Return the appropriate strategy number which corresponds to the equality
* operator.
*/
static StrategyNumber
get_equal_strategy_number(Oid opclass)
{
Oid am = get_opclass_method(opclass);
return get_equal_strategy_number_for_am(am);
}
/*
* Setup a ScanKey for a search in the relation 'rel' for a tuple 'key' that
* is setup to match 'rel' (*NOT* idxrel!).