diff options
Diffstat (limited to 'contrib/btree_gist/btree_int8.c')
| -rw-r--r-- | contrib/btree_gist/btree_int8.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_int8.c b/contrib/btree_gist/btree_int8.c new file mode 100644 index 00000000000..254fc740f87 --- /dev/null +++ b/contrib/btree_gist/btree_int8.c @@ -0,0 +1,161 @@ +#include "btree_gist.h" +#include "btree_utils_num.h" + +typedef struct int64key +{ + int64 lower; + int64 upper; +} int64KEY; + +/* +** int64 ops +*/ +PG_FUNCTION_INFO_V1(gbt_int8_compress); +PG_FUNCTION_INFO_V1(gbt_int8_union); +PG_FUNCTION_INFO_V1(gbt_int8_picksplit); +PG_FUNCTION_INFO_V1(gbt_int8_consistent); +PG_FUNCTION_INFO_V1(gbt_int8_penalty); +PG_FUNCTION_INFO_V1(gbt_int8_same); + +Datum gbt_int8_compress(PG_FUNCTION_ARGS); +Datum gbt_int8_union(PG_FUNCTION_ARGS); +Datum gbt_int8_picksplit(PG_FUNCTION_ARGS); +Datum gbt_int8_consistent(PG_FUNCTION_ARGS); +Datum gbt_int8_penalty(PG_FUNCTION_ARGS); +Datum gbt_int8_same(PG_FUNCTION_ARGS); + + +static bool gbt_int8gt (const void *a, const void *b) +{ + return ( *((int64*)a) > *((int64*)b) ); +} +static bool gbt_int8ge (const void *a, const void *b) +{ + return ( *((int64*)a) >= *((int64*)b) ); +} +static bool gbt_int8eq (const void *a, const void *b) +{ + return ( *((int64*)a) == *((int64*)b) ); +} +static bool gbt_int8le (const void *a, const void *b) +{ + return ( *((int64*)a) <= *((int64*)b) ); +} +static bool gbt_int8lt (const void *a, const void *b) +{ + return ( *((int64*)a) < *((int64*)b) ); +} + +static int +gbt_int8key_cmp(const void *a, const void *b) +{ + + if ( *(int64*)&(((Nsrt *) a)->t[0]) > *(int64*)&(((Nsrt *) b)->t[0]) ){ + return 1; + } else + if ( *(int64*)&(((Nsrt *) a)->t[0]) < *(int64*)&(((Nsrt *) b)->t[0]) ){ + return -1; + } + return 0; + +} + + +static const gbtree_ninfo tinfo = +{ + gbt_t_int8, + sizeof(int64), + gbt_int8gt, + gbt_int8ge, + gbt_int8eq, + gbt_int8le, + gbt_int8lt, + gbt_int8key_cmp +}; + + +/************************************************** + * int64 ops + **************************************************/ + + +Datum +gbt_int8_compress(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + GISTENTRY *retval = NULL; + PG_RETURN_POINTER( gbt_num_compress( retval , entry , &tinfo )); +} + + +Datum +gbt_int8_consistent(PG_FUNCTION_ARGS) +{ + GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); + int64 query = PG_GETARG_INT64(1); + int64KEY *kkk = (int64KEY *) DatumGetPointer(entry->key); + GBT_NUMKEY_R key ; + StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2); + 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) + ); +} + + +Datum +gbt_int8_union(PG_FUNCTION_ARGS) +{ + GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0); + void *out = palloc(sizeof(int64KEY)); + *(int *) PG_GETARG_POINTER(1) = sizeof(int64KEY); + PG_RETURN_POINTER( gbt_num_union ( (void*)out, entryvec, &tinfo ) ); +} + + +Datum +gbt_int8_penalty(PG_FUNCTION_ARGS) +{ + int64KEY *origentry = (int64KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key); + int64KEY *newentry = (int64KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key); + float *result = (float *) PG_GETARG_POINTER(2); + int64 res ; + + *result = 0.0; + + res = Max(newentry->upper - origentry->upper, 0) + + Max(origentry->lower - newentry->lower, 0); + + if ( res > 0 ){ + *result += FLT_MIN ; + *result += (float) ( res / ( (double) ( res + origentry->upper - origentry->lower ) ) ); + *result *= ( FLT_MAX / ( ( (GISTENTRY *) PG_GETARG_POINTER(0))->rel->rd_att->natts + 1 ) ); + } + + PG_RETURN_POINTER(result); + +} + +Datum +gbt_int8_picksplit(PG_FUNCTION_ARGS) +{ + PG_RETURN_POINTER(gbt_num_picksplit( + (GistEntryVector *) PG_GETARG_POINTER(0), + (GIST_SPLITVEC *) PG_GETARG_POINTER(1), + &tinfo + )); +} + +Datum +gbt_int8_same(PG_FUNCTION_ARGS) +{ + int64KEY *b1 = (int64KEY *) PG_GETARG_POINTER(0); + int64KEY *b2 = (int64KEY *) PG_GETARG_POINTER(1); + bool *result = (bool *) PG_GETARG_POINTER(2); + + *result = gbt_num_same ( (void*)b1, (void*)b2, &tinfo ); + PG_RETURN_POINTER(result); +} + |