diff options
Diffstat (limited to 'contrib/btree_gist/btree_oid.c')
| -rw-r--r-- | contrib/btree_gist/btree_oid.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_oid.c b/contrib/btree_gist/btree_oid.c new file mode 100644 index 0000000..3cc7d42 --- /dev/null +++ b/contrib/btree_gist/btree_oid.c @@ -0,0 +1,217 @@ +/* + * contrib/btree_gist/btree_oid.c + */ +#include "postgres.h" + +#include "btree_gist.h" +#include "btree_utils_num.h" + +typedef struct +{ + Oid lower; + Oid upper; +} oidKEY; + +/* +** OID ops +*/ +PG_FUNCTION_INFO_V1(gbt_oid_compress); +PG_FUNCTION_INFO_V1(gbt_oid_fetch); +PG_FUNCTION_INFO_V1(gbt_oid_union); +PG_FUNCTION_INFO_V1(gbt_oid_picksplit); +PG_FUNCTION_INFO_V1(gbt_oid_consistent); +PG_FUNCTION_INFO_V1(gbt_oid_distance); +PG_FUNCTION_INFO_V1(gbt_oid_penalty); +PG_FUNCTION_INFO_V1(gbt_oid_same); + + +static bool +gbt_oidgt(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const Oid *) a) > *((const Oid *) b)); +} +static bool +gbt_oidge(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const Oid *) a) >= *((const Oid *) b)); +} +static bool +gbt_oideq(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const Oid *) a) == *((const Oid *) b)); +} +static bool +gbt_oidle(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const Oid *) a) <= *((const Oid *) b)); +} +static bool +gbt_oidlt(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const Oid *) a) < *((const Oid *) b)); +} + +static int +gbt_oidkey_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 (ia->upper > ib->upper) ? 1 : -1; + } + + return (ia->lower > ib->lower) ? 1 : -1; +} + +static float8 +gbt_oid_dist(const void *a, const void *b, FmgrInfo *flinfo) +{ + Oid aa = *(const Oid *) a; + Oid bb = *(const Oid *) b; + + if (aa < bb) + return (float8) (bb - aa); + else + return (float8) (aa - bb); +} + + +static const gbtree_ninfo tinfo = +{ + gbt_t_oid, + sizeof(Oid), + 8, /* sizeof(gbtreekey8) */ + gbt_oidgt, + gbt_oidge, + gbt_oideq, + gbt_oidle, + gbt_oidlt, + gbt_oidkey_cmp, + gbt_oid_dist +}; + + +PG_FUNCTION_INFO_V1(oid_dist); +Datum +oid_dist(PG_FUNCTION_ARGS) +{ + Oid a = PG_GETARG_OID(0); + Oid b = PG_GETARG_OID(1); + Oid res; + + if (a < b) + res = b - a; + else + res = a - b; + PG_RETURN_OID(res); +} + + +/************************************************** + * Oid ops + **************************************************/ + + +Datum +gbt_oid_compress(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + + PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo)); +} + +Datum +gbt_oid_fetch(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + + PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo)); +} + +Datum +gbt_oid_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_oid_distance(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + Oid query = PG_GETARG_OID(1); + + /* Oid subtype = PG_GETARG_OID(3); */ + oidKEY *kkk = (oidKEY *) DatumGetPointer(entry->key); + GBT_NUMKEY_R key; + + key.lower = (GBT_NUMKEY *) &kkk->lower; + key.upper = (GBT_NUMKEY *) &kkk->upper; + + PG_RETURN_FLOAT8(gbt_num_distance(&key, (void *) &query, GIST_LEAF(entry), + &tinfo, fcinfo->flinfo)); +} + + +Datum +gbt_oid_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_oid_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_oid_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_oid_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); +} |