diff options
Diffstat (limited to 'contrib/btree_gist/btree_inet.c')
| -rw-r--r-- | contrib/btree_gist/btree_inet.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_inet.c b/contrib/btree_gist/btree_inet.c new file mode 100644 index 0000000..2fb952d --- /dev/null +++ b/contrib/btree_gist/btree_inet.c @@ -0,0 +1,187 @@ +/* + * contrib/btree_gist/btree_inet.c + */ +#include "postgres.h" + +#include "btree_gist.h" +#include "btree_utils_num.h" +#include "catalog/pg_type.h" +#include "utils/builtins.h" +#include "utils/inet.h" + +typedef struct inetkey +{ + double lower; + double upper; +} inetKEY; + +/* +** inet ops +*/ +PG_FUNCTION_INFO_V1(gbt_inet_compress); +PG_FUNCTION_INFO_V1(gbt_inet_union); +PG_FUNCTION_INFO_V1(gbt_inet_picksplit); +PG_FUNCTION_INFO_V1(gbt_inet_consistent); +PG_FUNCTION_INFO_V1(gbt_inet_penalty); +PG_FUNCTION_INFO_V1(gbt_inet_same); + + +static bool +gbt_inetgt(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const double *) a) > *((const double *) b)); +} +static bool +gbt_inetge(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const double *) a) >= *((const double *) b)); +} +static bool +gbt_ineteq(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const double *) a) == *((const double *) b)); +} +static bool +gbt_inetle(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const double *) a) <= *((const double *) b)); +} +static bool +gbt_inetlt(const void *a, const void *b, FmgrInfo *flinfo) +{ + return (*((const double *) a) < *((const double *) b)); +} + +static int +gbt_inetkey_cmp(const void *a, const void *b, FmgrInfo *flinfo) +{ + inetKEY *ia = (inetKEY *) (((const Nsrt *) a)->t); + inetKEY *ib = (inetKEY *) (((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 const gbtree_ninfo tinfo = +{ + gbt_t_inet, + sizeof(double), + 16, /* sizeof(gbtreekey16) */ + gbt_inetgt, + gbt_inetge, + gbt_ineteq, + gbt_inetle, + gbt_inetlt, + gbt_inetkey_cmp, + NULL +}; + + +/************************************************** + * inet ops + **************************************************/ + + +Datum +gbt_inet_compress(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + GISTENTRY *retval; + + if (entry->leafkey) + { + inetKEY *r = (inetKEY *) palloc(sizeof(inetKEY)); + bool failure = false; + + retval = palloc(sizeof(GISTENTRY)); + r->lower = convert_network_to_scalar(entry->key, INETOID, &failure); + Assert(!failure); + r->upper = r->lower; + gistentryinit(*retval, PointerGetDatum(r), + entry->rel, entry->page, + entry->offset, false); + } + else + retval = entry; + + PG_RETURN_POINTER(retval); +} + + +Datum +gbt_inet_consistent(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + Datum dquery = PG_GETARG_DATUM(1); + StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2); + + /* Oid subtype = PG_GETARG_OID(3); */ + bool *recheck = (bool *) PG_GETARG_POINTER(4); + inetKEY *kkk = (inetKEY *) DatumGetPointer(entry->key); + GBT_NUMKEY_R key; + double query; + bool failure = false; + + query = convert_network_to_scalar(dquery, INETOID, &failure); + Assert(!failure); + + /* All cases served by this function are inexact */ + *recheck = true; + + 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_inet_union(PG_FUNCTION_ARGS) +{ + GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0); + void *out = palloc(sizeof(inetKEY)); + + *(int *) PG_GETARG_POINTER(1) = sizeof(inetKEY); + PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo, fcinfo->flinfo)); +} + + +Datum +gbt_inet_penalty(PG_FUNCTION_ARGS) +{ + inetKEY *origentry = (inetKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key); + inetKEY *newentry = (inetKEY *) 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_inet_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_inet_same(PG_FUNCTION_ARGS) +{ + inetKEY *b1 = (inetKEY *) PG_GETARG_POINTER(0); + inetKEY *b2 = (inetKEY *) 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); +} |