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9b5c8d45f6
"consistent" functions, and remove pg_amop.opreqcheck, as per recent discussion. The main immediate benefit of this is that we no longer need 8.3's ugly hack of requiring @@@ rather than @@ to test weight-using tsquery searches on GIN indexes. In future it should be possible to optimize some other queries better than is done now, by detecting at runtime whether the index match is exact or not. Tom Lane, after an idea of Heikki's, and with some help from Teodor.
156 lines
3.5 KiB
C
156 lines
3.5 KiB
C
#include "btree_gist.h"
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#include "btree_utils_var.h"
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#include "utils/builtins.h"
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/*
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** Bytea ops
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*/
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PG_FUNCTION_INFO_V1(gbt_bytea_compress);
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PG_FUNCTION_INFO_V1(gbt_bytea_union);
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PG_FUNCTION_INFO_V1(gbt_bytea_picksplit);
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PG_FUNCTION_INFO_V1(gbt_bytea_consistent);
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PG_FUNCTION_INFO_V1(gbt_bytea_penalty);
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PG_FUNCTION_INFO_V1(gbt_bytea_same);
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Datum gbt_bytea_compress(PG_FUNCTION_ARGS);
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Datum gbt_bytea_union(PG_FUNCTION_ARGS);
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Datum gbt_bytea_picksplit(PG_FUNCTION_ARGS);
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Datum gbt_bytea_consistent(PG_FUNCTION_ARGS);
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Datum gbt_bytea_penalty(PG_FUNCTION_ARGS);
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Datum gbt_bytea_same(PG_FUNCTION_ARGS);
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/* define for comparison */
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static bool
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gbt_byteagt(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(byteagt, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static bool
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gbt_byteage(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(byteage, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static bool
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gbt_byteaeq(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(byteaeq, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static bool
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gbt_byteale(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(byteale, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static bool
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gbt_bytealt(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(bytealt, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static int32
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gbt_byteacmp(const bytea *a, const bytea *b)
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{
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return
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(DatumGetInt32(DirectFunctionCall2(byteacmp, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static const gbtree_vinfo tinfo =
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{
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gbt_t_bytea,
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0,
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TRUE,
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gbt_byteagt,
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gbt_byteage,
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gbt_byteaeq,
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gbt_byteale,
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gbt_bytealt,
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gbt_byteacmp,
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NULL
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};
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/**************************************************
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* Text ops
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**************************************************/
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Datum
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gbt_bytea_compress(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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PG_RETURN_POINTER(gbt_var_compress(entry, &tinfo));
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}
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Datum
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gbt_bytea_consistent(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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void *query = (void *) DatumGetByteaP(PG_GETARG_DATUM(1));
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StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
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/* Oid subtype = PG_GETARG_OID(3); */
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bool *recheck = (bool *) PG_GETARG_POINTER(4);
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bool retval;
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GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer(entry->key);
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GBT_VARKEY_R r = gbt_var_key_readable(key);
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/* All cases served by this function are exact */
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*recheck = false;
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retval = gbt_var_consistent(&r, query, &strategy, GIST_LEAF(entry), &tinfo);
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PG_RETURN_BOOL(retval);
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}
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Datum
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gbt_bytea_union(PG_FUNCTION_ARGS)
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{
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GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
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int32 *size = (int *) PG_GETARG_POINTER(1);
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PG_RETURN_POINTER(gbt_var_union(entryvec, size, &tinfo));
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}
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Datum
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gbt_bytea_picksplit(PG_FUNCTION_ARGS)
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{
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GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
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GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1);
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gbt_var_picksplit(entryvec, v, &tinfo);
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PG_RETURN_POINTER(v);
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}
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Datum
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gbt_bytea_same(PG_FUNCTION_ARGS)
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{
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Datum d1 = PG_GETARG_DATUM(0);
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Datum d2 = PG_GETARG_DATUM(1);
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bool *result = (bool *) PG_GETARG_POINTER(2);
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PG_RETURN_POINTER(gbt_var_same(result, d1, d2, &tinfo));
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}
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Datum
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gbt_bytea_penalty(PG_FUNCTION_ARGS)
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{
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GISTENTRY *o = (GISTENTRY *) PG_GETARG_POINTER(0);
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GISTENTRY *n = (GISTENTRY *) PG_GETARG_POINTER(1);
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float *result = (float *) PG_GETARG_POINTER(2);
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PG_RETURN_POINTER(gbt_var_penalty(result, o, n, &tinfo));
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}
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