diff options
Diffstat (limited to 'contrib/btree_gist/btree_date.c')
| -rw-r--r-- | contrib/btree_gist/btree_date.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_date.c b/contrib/btree_gist/btree_date.c index 455a265a497..3abb6e9c475 100644 --- a/contrib/btree_gist/btree_date.c +++ b/contrib/btree_gist/btree_date.c @@ -25,6 +25,7 @@ PG_FUNCTION_INFO_V1(gbt_date_consistent); PG_FUNCTION_INFO_V1(gbt_date_distance); PG_FUNCTION_INFO_V1(gbt_date_penalty); PG_FUNCTION_INFO_V1(gbt_date_same); +PG_FUNCTION_INFO_V1(gbt_date_sortsupport); static bool gbt_dategt(const void *a, const void *b, FmgrInfo *flinfo) @@ -257,3 +258,29 @@ gbt_date_same(PG_FUNCTION_ARGS) *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo); PG_RETURN_POINTER(result); } + +static int +gbt_date_sort_build_cmp(Datum a, Datum b, SortSupport ssup) +{ + dateKEY *ia = (dateKEY *) PointerGetDatum(a); + dateKEY *ib = (dateKEY *) PointerGetDatum(b); + + return DatumGetInt32(DirectFunctionCall2(date_cmp, + DateADTGetDatum(ia->lower), + DateADTGetDatum(ib->lower))); +} + +/* + * Sort support routine for fast GiST index build by sorting. + */ +Datum +gbt_date_sortsupport(PG_FUNCTION_ARGS) +{ + SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0); + + ssup->comparator = gbt_date_sort_build_cmp; + ssup->abbrev_converter = NULL; + ssup->abbrev_abort = NULL; + ssup->abbrev_full_comparator = NULL; + PG_RETURN_VOID(); +} |