From 9f984ba6d23dc6eecebf479ab1d3f2e550a4e9be Mon Sep 17 00:00:00 2001 From: Heikki Linnakangas Date: Wed, 7 Apr 2021 13:22:05 +0300 Subject: Add sortsupport for gist_btree opclasses, for faster index builds. Commit 16fa9b2b30 introduced a faster way to build GiST indexes, by sorting all the data. This commit adds the sortsupport functions needed to make use of that feature for btree_gist. Author: Andrey Borodin Discussion: https://www.postgresql.org/message-id/2F3F7265-0D22-44DB-AD71-8554C743D943@yandex-team.ru --- contrib/btree_gist/btree_text.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'contrib/btree_gist/btree_text.c') diff --git a/contrib/btree_gist/btree_text.c b/contrib/btree_gist/btree_text.c index 8019d112819..01b1bda2f66 100644 --- a/contrib/btree_gist/btree_text.c +++ b/contrib/btree_gist/btree_text.c @@ -18,6 +18,7 @@ PG_FUNCTION_INFO_V1(gbt_text_consistent); PG_FUNCTION_INFO_V1(gbt_bpchar_consistent); PG_FUNCTION_INFO_V1(gbt_text_penalty); PG_FUNCTION_INFO_V1(gbt_text_same); +PG_FUNCTION_INFO_V1(gbt_text_sortsupport); /* define for comparison */ @@ -239,3 +240,27 @@ gbt_text_penalty(PG_FUNCTION_ARGS) PG_RETURN_POINTER(gbt_var_penalty(result, o, n, PG_GET_COLLATION(), &tinfo, fcinfo->flinfo)); } + +static int +gbt_text_sort_build_cmp(Datum a, Datum b, SortSupport ssup) +{ + return DatumGetInt32(DirectFunctionCall2Coll(bttextcmp, + ssup->ssup_collation, + PointerGetDatum(a), + PointerGetDatum(b))); +} + +/* + * Sort support routine for fast GiST index build by sorting. + */ +Datum +gbt_text_sortsupport(PG_FUNCTION_ARGS) +{ + SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0); + + ssup->comparator = gbt_text_sort_build_cmp; + ssup->abbrev_converter = NULL; + ssup->abbrev_abort = NULL; + ssup->abbrev_full_comparator = NULL; + PG_RETURN_VOID(); +} -- cgit v1.2.3