diff options
Diffstat (limited to 'contrib/btree_gist/btree_enum.c')
| -rw-r--r-- | contrib/btree_gist/btree_enum.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_enum.c b/contrib/btree_gist/btree_enum.c new file mode 100644 index 0000000..d4dc38a --- /dev/null +++ b/contrib/btree_gist/btree_enum.c @@ -0,0 +1,185 @@ +/* + * contrib/btree_gist/btree_enum.c + */ +#include "postgres.h" + +#include "btree_gist.h" +#include "btree_utils_num.h" +#include "fmgr.h" +#include "utils/builtins.h" + +/* enums are really Oids, so we just use the same structure */ + +typedef struct +{ + Oid lower; + Oid upper; +} oidKEY; + +/* +** enum ops +*/ +PG_FUNCTION_INFO_V1(gbt_enum_compress); +PG_FUNCTION_INFO_V1(gbt_enum_fetch); +PG_FUNCTION_INFO_V1(gbt_enum_union); +PG_FUNCTION_INFO_V1(gbt_enum_picksplit); +PG_FUNCTION_INFO_V1(gbt_enum_consistent); +PG_FUNCTION_INFO_V1(gbt_enum_penalty); +PG_FUNCTION_INFO_V1(gbt_enum_same); + + +static bool +gbt_enumgt(const void *a, const void *b, FmgrInfo *flinfo) +{ + return DatumGetBool(CallerFInfoFunctionCall2(enum_gt, flinfo, InvalidOid, + ObjectIdGetDatum(*((const Oid *) a)), + ObjectIdGetDatum(*((const Oid *) b)))); +} +static bool +gbt_enumge(const void *a, const void *b, FmgrInfo *flinfo) +{ + return DatumGetBool(CallerFInfoFunctionCall2(enum_ge, flinfo, InvalidOid, + ObjectIdGetDatum(*((const Oid *) a)), + ObjectIdGetDatum(*((const Oid *) b)))); +} +static bool +gbt_enumeq(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const Oid *) a) == *((const Oid *) b)); +} +static bool +gbt_enumle(const void *a, const void *b, FmgrInfo *flinfo) +{ + return DatumGetBool(CallerFInfoFunctionCall2(enum_le, flinfo, InvalidOid, + ObjectIdGetDatum(*((const Oid *) a)), + ObjectIdGetDatum(*((const Oid *) b)))); +} +static bool +gbt_enumlt(const void *a, const void *b, FmgrInfo *flinfo) +{ + return DatumGetBool(CallerFInfoFunctionCall2(enum_lt, flinfo, InvalidOid, + ObjectIdGetDatum(*((const Oid *) a)), + ObjectIdGetDatum(*((const Oid *) b)))); +} + +static int +gbt_enumkey_cmp(const void *a, const void *b, FmgrInfo *flinfo) +{ + oidKEY *ia = (oidKEY *) (((const Nsrt *) a)->t); + oidKEY *ib = (oidKEY *) (((const Nsrt *) b)->t); + + if (ia->lower == ib->lower) + { + if (ia->upper == ib->upper) + return 0; + + return DatumGetInt32(CallerFInfoFunctionCall2(enum_cmp, flinfo, InvalidOid, + ObjectIdGetDatum(ia->upper), + ObjectIdGetDatum(ib->upper))); + } + + return DatumGetInt32(CallerFInfoFunctionCall2(enum_cmp, flinfo, InvalidOid, + ObjectIdGetDatum(ia->lower), + ObjectIdGetDatum(ib->lower))); +} + +static const gbtree_ninfo tinfo = +{ + gbt_t_enum, + sizeof(Oid), + 8, /* sizeof(gbtreekey8) */ + gbt_enumgt, + gbt_enumge, + gbt_enumeq, + gbt_enumle, + gbt_enumlt, + gbt_enumkey_cmp, + NULL /* no KNN support at least for now */ +}; + + +/************************************************** + * Enum ops + **************************************************/ + + +Datum +gbt_enum_compress(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + + PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo)); +} + +Datum +gbt_enum_fetch(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + + PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo)); +} + +Datum +gbt_enum_consistent(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + Oid query = PG_GETARG_OID(1); + StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2); + + /* Oid subtype = PG_GETARG_OID(3); */ + bool *recheck = (bool *) PG_GETARG_POINTER(4); + oidKEY *kkk = (oidKEY *) DatumGetPointer(entry->key); + GBT_NUMKEY_R key; + + /* All cases served by this function are exact */ + *recheck = false; + + key.lower = (GBT_NUMKEY *) &kkk->lower; + key.upper = (GBT_NUMKEY *) &kkk->upper; + + PG_RETURN_BOOL(gbt_num_consistent(&key, (void *) &query, &strategy, + GIST_LEAF(entry), &tinfo, + fcinfo->flinfo)); +} + +Datum +gbt_enum_union(PG_FUNCTION_ARGS) +{ + GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0); + void *out = palloc(sizeof(oidKEY)); + + *(int *) PG_GETARG_POINTER(1) = sizeof(oidKEY); + PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo, fcinfo->flinfo)); +} + + +Datum +gbt_enum_penalty(PG_FUNCTION_ARGS) +{ + oidKEY *origentry = (oidKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key); + oidKEY *newentry = (oidKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key); + float *result = (float *) PG_GETARG_POINTER(2); + + penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper); + + PG_RETURN_POINTER(result); +} + +Datum +gbt_enum_picksplit(PG_FUNCTION_ARGS) +{ + PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0), + (GIST_SPLITVEC *) PG_GETARG_POINTER(1), + &tinfo, fcinfo->flinfo)); +} + +Datum +gbt_enum_same(PG_FUNCTION_ARGS) +{ + oidKEY *b1 = (oidKEY *) PG_GETARG_POINTER(0); + oidKEY *b2 = (oidKEY *) PG_GETARG_POINTER(1); + bool *result = (bool *) PG_GETARG_POINTER(2); + + *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo); + PG_RETURN_POINTER(result); +} |