diff options
Diffstat (limited to 'contrib/btree_gist/btree_interval.c')
| -rw-r--r-- | contrib/btree_gist/btree_interval.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_interval.c b/contrib/btree_gist/btree_interval.c index ac0108e6280..b5e365c6e09 100644 --- a/contrib/btree_gist/btree_interval.c +++ b/contrib/btree_gist/btree_interval.c @@ -6,6 +6,7 @@ #include "btree_gist.h" #include "btree_utils_num.h" #include "utils/fmgrprotos.h" +#include "utils/sortsupport.h" #include "utils/timestamp.h" typedef struct @@ -24,6 +25,7 @@ PG_FUNCTION_INFO_V1(gbt_intv_consistent); PG_FUNCTION_INFO_V1(gbt_intv_distance); PG_FUNCTION_INFO_V1(gbt_intv_penalty); PG_FUNCTION_INFO_V1(gbt_intv_same); +PG_FUNCTION_INFO_V1(gbt_intv_sortsupport); static bool @@ -291,3 +293,26 @@ gbt_intv_same(PG_FUNCTION_ARGS) *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo); PG_RETURN_POINTER(result); } + +static int +gbt_intv_ssup_cmp(Datum x, Datum y, SortSupport ssup) +{ + intvKEY *arg1 = (intvKEY *) DatumGetPointer(x); + intvKEY *arg2 = (intvKEY *) DatumGetPointer(y); + + /* for leaf items we expect lower == upper, so only compare lower */ + return DatumGetInt32(DirectFunctionCall2(interval_cmp, + IntervalPGetDatum(&arg1->lower), + IntervalPGetDatum(&arg2->lower))); +} + +Datum +gbt_intv_sortsupport(PG_FUNCTION_ARGS) +{ + SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0); + + ssup->comparator = gbt_intv_ssup_cmp; + ssup->ssup_extra = NULL; + + PG_RETURN_VOID(); +} |