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272 lines
6.9 KiB
C
272 lines
6.9 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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** Text ops
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*/
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PG_FUNCTION_INFO_V1(gbt_text_compress);
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PG_FUNCTION_INFO_V1(gbt_bpchar_compress);
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PG_FUNCTION_INFO_V1(gbt_text_union);
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PG_FUNCTION_INFO_V1(gbt_text_picksplit);
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PG_FUNCTION_INFO_V1(gbt_text_consistent);
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PG_FUNCTION_INFO_V1(gbt_bpchar_consistent);
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PG_FUNCTION_INFO_V1(gbt_text_penalty);
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PG_FUNCTION_INFO_V1(gbt_text_same);
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Datum gbt_text_compress(PG_FUNCTION_ARGS);
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Datum gbt_bpchar_compress(PG_FUNCTION_ARGS);
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Datum gbt_text_union(PG_FUNCTION_ARGS);
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Datum gbt_text_picksplit(PG_FUNCTION_ARGS);
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Datum gbt_text_consistent(PG_FUNCTION_ARGS);
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Datum gbt_bpchar_consistent(PG_FUNCTION_ARGS);
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Datum gbt_text_penalty(PG_FUNCTION_ARGS);
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Datum gbt_text_same(PG_FUNCTION_ARGS);
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/* define for comparison */
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static bool gbt_textgt (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( text_gt ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static bool gbt_textge (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( text_ge ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static bool gbt_texteq (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( texteq ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static bool gbt_textle (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( text_le ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static bool gbt_textlt (const void *a, const void *b)
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{
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return ( DatumGetBool(DirectFunctionCall2( text_lt ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
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}
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static int32 gbt_textcmp ( const bytea * a , const bytea * b )
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{
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return strcmp( VARDATA(a), VARDATA(b) );
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}
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/*
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* Converts data of leaf using strxfrm ( locale support )
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*/
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static bytea *
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gbt_text_xfrm ( bytea * leaf )
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{
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bytea * out = leaf;
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int32 ilen = VARSIZE (leaf) - VARHDRSZ;
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int32 olen ;
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char sin[ilen+1];
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char * sou = NULL;
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memcpy ( (void*)&sin[0], (void*) VARDATA(leaf) ,ilen );
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sin[ilen] = '\0';
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olen = strxfrm ( NULL, &sin[0], 0 ) + 1;
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sou = palloc ( olen );
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olen = strxfrm ( sou , &sin[0] , olen );
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olen += VARHDRSZ;
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out = palloc ( olen + 1 );
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out->vl_len = olen+1;
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memcpy( (void*) VARDATA(out), sou, olen-VARHDRSZ );
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((char*)out)[olen] = '\0';
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pfree(sou);
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return out;
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}
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static GBT_VARKEY * gbt_text_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_text_xfrm ( r.lower );
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r.lower = r.upper = 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_text,
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TRUE,
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TRUE,
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gbt_textgt,
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gbt_textge,
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gbt_texteq,
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gbt_textle,
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gbt_textlt,
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gbt_textcmp,
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gbt_text_l2n
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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_text_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_bpchar_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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Datum d = DirectFunctionCall1 ( rtrim1, entry->key );
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GISTENTRY * trim = palloc(sizeof(GISTENTRY));
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gistentryinit(*trim, d ,
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entry->rel, entry->page,
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entry->offset, VARSIZE(DatumGetPointer(d)), TRUE);
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retval = gbt_var_compress( trim , &tinfo ) ;
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pfree ( trim );
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pfree ( DatumGetPointer(d) );
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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_text_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 * ) DatumGetTextP ( 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_text_xfrm ( ( bytea * ) query );
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retval = gbt_var_consistent( &r, (void*)q, &strategy, FALSE, &tinfo );
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if ( q != query )
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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_bpchar_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 * ) DatumGetPointer (PG_DETOAST_DATUM( PG_GETARG_DATUM(1) ) );
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void *trim = ( void * ) DatumGetPointer ( DirectFunctionCall1 ( rtrim1, PointerGetDatum ( query ) ) ) ;
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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, trim , &strategy, TRUE, &tinfo );
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} else {
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bytea * q = gbt_text_xfrm ( ( bytea * ) trim );
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retval = gbt_var_consistent( &r, (void*)q, &strategy, FALSE, &tinfo );
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if ( q != trim )
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pfree(q);
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}
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pfree(trim);
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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_text_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_text_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_text_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_text_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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