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1f7ef548ec
* new split algorithm (as proposed in http://archives.postgresql.org/pgsql-hackers/2006-06/msg00254.php) * possible call pickSplit() for second and below columns * add spl_(l|r)datum_exists to GIST_SPLITVEC - pickSplit should check its values to use already defined spl_(l|r)datum for splitting. pickSplit should set spl_(l|r)datum_exists to 'false' (if they was 'true') to signal to caller about using spl_(l|r)datum. * support for old pickSplit(): not very optimal but correct split * remove 'bytes' field from GISTENTRY: in any case size of value is defined by it's type. * split GIST_SPLITVEC to two structures: one for using in picksplit and second - for internal use. * some code refactoring * support of subsplit to rtree opclasses TODO: add support of subsplit to contrib modules
173 lines
3.9 KiB
C
173 lines
3.9 KiB
C
#include "btree_gist.h"
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#include "btree_utils_num.h"
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#include "utils/builtins.h"
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#include "utils/inet.h"
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#include "catalog/pg_type.h"
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typedef struct inetkey
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{
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double lower;
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double upper;
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} inetKEY;
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/*
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** inet ops
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*/
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PG_FUNCTION_INFO_V1(gbt_inet_compress);
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PG_FUNCTION_INFO_V1(gbt_inet_union);
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PG_FUNCTION_INFO_V1(gbt_inet_picksplit);
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PG_FUNCTION_INFO_V1(gbt_inet_consistent);
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PG_FUNCTION_INFO_V1(gbt_inet_penalty);
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PG_FUNCTION_INFO_V1(gbt_inet_same);
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Datum gbt_inet_compress(PG_FUNCTION_ARGS);
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Datum gbt_inet_union(PG_FUNCTION_ARGS);
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Datum gbt_inet_picksplit(PG_FUNCTION_ARGS);
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Datum gbt_inet_consistent(PG_FUNCTION_ARGS);
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Datum gbt_inet_penalty(PG_FUNCTION_ARGS);
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Datum gbt_inet_same(PG_FUNCTION_ARGS);
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static bool
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gbt_inetgt(const void *a, const void *b)
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{
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return (*((double *) a) > *((double *) b));
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}
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static bool
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gbt_inetge(const void *a, const void *b)
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{
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return (*((double *) a) >= *((double *) b));
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}
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static bool
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gbt_ineteq(const void *a, const void *b)
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{
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return (*((double *) a) == *((double *) b));
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}
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static bool
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gbt_inetle(const void *a, const void *b)
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{
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return (*((double *) a) <= *((double *) b));
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}
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static bool
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gbt_inetlt(const void *a, const void *b)
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{
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return (*((double *) a) < *((double *) b));
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}
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static int
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gbt_inetkey_cmp(const void *a, const void *b)
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{
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if (*(double *) (&((Nsrt *) a)->t[0]) > *(double *) (&((Nsrt *) b)->t[0]))
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return 1;
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else if (*(double *) (&((Nsrt *) a)->t[0]) < *(double *) (&((Nsrt *) b)->t[0]))
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return -1;
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return 0;
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}
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static const gbtree_ninfo tinfo =
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{
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gbt_t_inet,
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sizeof(double),
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gbt_inetgt,
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gbt_inetge,
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gbt_ineteq,
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gbt_inetle,
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gbt_inetlt,
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gbt_inetkey_cmp
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};
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/**************************************************
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* inet ops
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**************************************************/
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Datum
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gbt_inet_compress(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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GISTENTRY *retval;
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if (entry->leafkey)
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{
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inetKEY *r = (inetKEY *) palloc(sizeof(inetKEY));
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retval = palloc(sizeof(GISTENTRY));
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r->lower = convert_network_to_scalar(entry->key, INETOID);
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r->upper = r->lower;
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gistentryinit(*retval, PointerGetDatum(r),
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entry->rel, entry->page,
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entry->offset, FALSE);
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}
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else
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retval = entry;
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PG_RETURN_POINTER(retval);
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}
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Datum
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gbt_inet_consistent(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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double query = convert_network_to_scalar(PG_GETARG_DATUM(1), INETOID);
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StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
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inetKEY *kkk = (inetKEY *) DatumGetPointer(entry->key);
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GBT_NUMKEY_R key;
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key.lower = (GBT_NUMKEY *) & kkk->lower;
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key.upper = (GBT_NUMKEY *) & kkk->upper;
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PG_RETURN_BOOL(gbt_num_consistent(&key, (void *) &query,
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&strategy, GIST_LEAF(entry), &tinfo));
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}
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Datum
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gbt_inet_union(PG_FUNCTION_ARGS)
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{
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GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
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void *out = palloc(sizeof(inetKEY));
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*(int *) PG_GETARG_POINTER(1) = sizeof(inetKEY);
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PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo));
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}
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Datum
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gbt_inet_penalty(PG_FUNCTION_ARGS)
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{
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inetKEY *origentry = (inetKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
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inetKEY *newentry = (inetKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
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float *result = (float *) PG_GETARG_POINTER(2);
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penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
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PG_RETURN_POINTER(result);
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}
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Datum
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gbt_inet_picksplit(PG_FUNCTION_ARGS)
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{
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PG_RETURN_POINTER(gbt_num_picksplit(
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(GistEntryVector *) PG_GETARG_POINTER(0),
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(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
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&tinfo
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));
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}
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Datum
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gbt_inet_same(PG_FUNCTION_ARGS)
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{
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inetKEY *b1 = (inetKEY *) PG_GETARG_POINTER(0);
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inetKEY *b2 = (inetKEY *) PG_GETARG_POINTER(1);
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bool *result = (bool *) PG_GETARG_POINTER(2);
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*result = gbt_num_same((void *) b1, (void *) b2, &tinfo);
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PG_RETURN_POINTER(result);
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}
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