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197 lines
4.9 KiB
C
197 lines
4.9 KiB
C
#include "btree_gist.h"
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#include "btree_utils_num.h"
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typedef struct
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{
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Interval lower,
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upper;
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} intvKEY;
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/*
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** Interval ops
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*/
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PG_FUNCTION_INFO_V1(gbt_intv_compress);
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PG_FUNCTION_INFO_V1(gbt_intv_union);
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PG_FUNCTION_INFO_V1(gbt_intv_picksplit);
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PG_FUNCTION_INFO_V1(gbt_intv_consistent);
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PG_FUNCTION_INFO_V1(gbt_intv_penalty);
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PG_FUNCTION_INFO_V1(gbt_intv_same);
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Datum gbt_intv_compress(PG_FUNCTION_ARGS);
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Datum gbt_intv_union(PG_FUNCTION_ARGS);
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Datum gbt_intv_picksplit(PG_FUNCTION_ARGS);
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Datum gbt_intv_consistent(PG_FUNCTION_ARGS);
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Datum gbt_intv_penalty(PG_FUNCTION_ARGS);
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Datum gbt_intv_same(PG_FUNCTION_ARGS);
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static bool gbt_intvgt (const void *a, const void *b)
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{
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return DirectFunctionCall2 ( interval_gt , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
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}
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static bool gbt_intvge (const void *a, const void *b)
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{
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return DirectFunctionCall2 ( interval_ge , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
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}
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static bool gbt_intveq (const void *a, const void *b)
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{
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return DirectFunctionCall2 ( interval_eq , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
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}
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static bool gbt_intvle (const void *a, const void *b)
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{
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return DirectFunctionCall2 ( interval_le , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
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}
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static bool gbt_intvlt (const void *a, const void *b)
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{
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return DirectFunctionCall2 ( interval_lt , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
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}
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static int
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gbt_intvkey_cmp(const void *a, const void *b)
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{
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return DatumGetInt32 (
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DirectFunctionCall2 ( interval_cmp ,
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IntervalPGetDatum(&((Nsrt *) a)->t[0]) ,
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IntervalPGetDatum(&((Nsrt *) b)->t[0])
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)
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);
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}
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static const gbtree_ninfo tinfo =
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{
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gbt_t_intv,
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sizeof(Interval),
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gbt_intvgt,
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gbt_intvge,
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gbt_intveq,
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gbt_intvle,
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gbt_intvlt,
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gbt_intvkey_cmp
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};
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/**************************************************
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* interval ops
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**************************************************/
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Datum
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gbt_intv_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 = NULL;
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PG_RETURN_POINTER( gbt_num_compress( retval , entry , &tinfo ));
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}
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Datum
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gbt_intv_consistent(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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Interval *query = PG_GETARG_INTERVAL_P(1);
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intvKEY *kkk = (intvKEY *) DatumGetPointer(entry->key);
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GBT_NUMKEY_R key ;
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StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
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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(
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gbt_num_consistent( &key, (void*)query ,&strategy,GIST_LEAF(entry),&tinfo)
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);
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}
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Datum
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gbt_intv_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(intvKEY));
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*(int *) PG_GETARG_POINTER(1) = sizeof(intvKEY);
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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_intv_penalty(PG_FUNCTION_ARGS)
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{
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intvKEY *origentry = (intvKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
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intvKEY *newentry = (intvKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
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float *result = (float *) PG_GETARG_POINTER(2);
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Interval *intr;
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#ifdef HAVE_INT64_TIMESTAMP
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int64 res;
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#else
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double res;
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#endif
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intr = DatumGetIntervalP(DirectFunctionCall2(
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interval_mi,
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IntervalPGetDatum(&newentry->upper),
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IntervalPGetDatum(&origentry->upper)
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));
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/* see interval_larger */
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res = Max(intr->time + intr->month * (30 * 86400), 0);
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pfree(intr);
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intr = DatumGetIntervalP(DirectFunctionCall2(
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interval_mi,
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IntervalPGetDatum(&origentry->lower),
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IntervalPGetDatum(&newentry->lower)
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));
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/* see interval_larger */
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res += Max(intr->time + intr->month * (30 * 86400), 0);
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pfree(intr);
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*result = 0.0;
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if ( res > 0 ){
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intr = DatumGetIntervalP(DirectFunctionCall2(
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interval_mi,
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IntervalPGetDatum(&origentry->upper),
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IntervalPGetDatum(&origentry->lower)
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));
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*result += FLT_MIN ;
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*result += (float) ( res / ( (double) ( res + intr->time + intr->month * (30 * 86400) ) ) );
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*result *= ( FLT_MAX / ( ( (GISTENTRY *) PG_GETARG_POINTER(0))->rel->rd_att->natts + 1 ) );
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pfree ( intr );
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}
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PG_RETURN_POINTER(result);
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}
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Datum
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gbt_intv_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_intv_same(PG_FUNCTION_ARGS)
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{
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intvKEY *b1 = (intvKEY *) PG_GETARG_POINTER(0);
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intvKEY *b2 = (intvKEY *) 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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