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186 lines
4.6 KiB
C
186 lines
4.6 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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#include "utils/varbit.h"
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/*
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** Bit ops
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*/
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PG_FUNCTION_INFO_V1(gbt_bit_compress);
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PG_FUNCTION_INFO_V1(gbt_bit_union);
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PG_FUNCTION_INFO_V1(gbt_bit_picksplit);
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PG_FUNCTION_INFO_V1(gbt_bit_consistent);
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PG_FUNCTION_INFO_V1(gbt_bit_penalty);
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PG_FUNCTION_INFO_V1(gbt_bit_same);
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Datum gbt_bit_compress(PG_FUNCTION_ARGS);
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Datum gbt_bit_union(PG_FUNCTION_ARGS);
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Datum gbt_bit_picksplit(PG_FUNCTION_ARGS);
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Datum gbt_bit_consistent(PG_FUNCTION_ARGS);
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Datum gbt_bit_penalty(PG_FUNCTION_ARGS);
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Datum gbt_bit_same(PG_FUNCTION_ARGS);
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/* define for comparison */
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static bool gbt_bitgt (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( bitgt ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static bool gbt_bitge (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( bitge ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static bool gbt_biteq (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( biteq ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static bool gbt_bitle (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( bitle ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static bool gbt_bitlt (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( bitlt ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static int32 gbt_bitcmp ( 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 bytea *
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gbt_bit_xfrm ( bytea * leaf )
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{
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bytea * out = leaf;
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int s = VARBITBYTES(leaf) + VARHDRSZ;
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out = palloc ( s );
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VARATT_SIZEP(out) = s;
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memcpy ( (void*)VARDATA(out), (void*)VARBITS(leaf), VARBITBYTES(leaf) );
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return out;
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}
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static GBT_VARKEY * gbt_bit_l2n ( GBT_VARKEY * leaf )
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{
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GBT_VARKEY *out = leaf ;
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GBT_VARKEY_R r = gbt_var_key_readable ( leaf );
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bytea *o ;
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o = gbt_bit_xfrm (r.lower);
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r.upper = r.lower = o;
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out = gbt_var_key_copy( &r, TRUE );
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pfree(o);
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return out;
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}
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static const gbtree_vinfo tinfo =
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{
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gbt_t_bit,
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FALSE,
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TRUE,
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gbt_bitgt,
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gbt_bitge,
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gbt_biteq,
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gbt_bitle,
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gbt_bitlt,
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gbt_bitcmp,
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gbt_bit_l2n
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};
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/**************************************************
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* Bit ops
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**************************************************/
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Datum
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gbt_bit_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_bit_consistent(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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GBT_VARKEY *ktst = (GBT_VARKEY *) DatumGetPointer ( entry->key ) ;
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GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer ( PG_DETOAST_DATUM( entry->key ) );
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void *qtst = ( void * ) DatumGetPointer( PG_GETARG_DATUM(1) );
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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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bool retval = FALSE;
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GBT_VARKEY_R r = gbt_var_key_readable ( key );
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if ( GIST_LEAF(entry) )
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{
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retval = gbt_var_consistent( &r, query, &strategy, TRUE, &tinfo );
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} else {
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bytea * q = gbt_bit_xfrm ( ( bytea * ) query );
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retval = gbt_var_consistent( &r, (void*)q, &strategy, FALSE, &tinfo );
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pfree(q);
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}
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if ( ktst != key ){
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pfree ( key );
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}
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if ( qtst != query ){
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pfree ( query );
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}
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PG_RETURN_BOOL(retval);
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}
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Datum
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gbt_bit_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_bit_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_bit_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_bit_penalty(PG_FUNCTION_ARGS)
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{
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float *result = (float *) PG_GETARG_POINTER(2);
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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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PG_RETURN_POINTER( gbt_var_penalty ( result ,o , n, &tinfo ) );
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}
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