/*

* $PostgreSQL: pgsql/contrib/pg_trgm/trgm_gin.c,v 1.4 2008/05/17 01:28:21 adunstan Exp $

* $PostgreSQL: pgsql/contrib/pg_trgm/trgm_gin.c,v 1.5 2008/07/11 11:56:48 teodor Exp $

*/

#include "trgm.h"

PG_RETURN_POINTER(entries);

}

/*

* Per call strage for consistent functions to

* cache computed value from query

*/

typedef struct PerCallConsistentStorage {

inttrglen;

textdata[1]; /* query */

} PerCallConsistentStorage;

#define PCCSHDR_SZ offsetof(PerCallConsistentStorage, data)

Datum

gin_trgm_consistent(PG_FUNCTION_ARGS)

{

text *query = PG_GETARG_TEXT_P(2);

bool *recheck = (bool *) PG_GETARG_POINTER(3);

boolres = FALSE;

TRGM *trg;

int4i,

trglen,

ntrue = 0;

PerCallConsistentStorage *pccs = (PerCallConsistentStorage*) fcinfo->flinfo->fn_extra;

/* All cases served by this function are inexact */

*recheck = true;

trg = generate_trgm(VARDATA(query), VARSIZE(query) - VARHDRSZ);

trglen = ARRNELEM(trg);

if ( pccs == NULL || VARSIZE(pccs->data) != VARSIZE(query) || memcmp( pccs->data, query, VARSIZE(query) ) !=0 )

{

TRGM *trg = generate_trgm(VARDATA(query), VARSIZE(query) - VARHDRSZ);

if ( pccs )

pfree(pccs);

fcinfo->flinfo->fn_extra = MemoryContextAlloc(fcinfo->flinfo->fn_mcxt,

VARSIZE(query) + PCCSHDR_SZ);

pccs = (PerCallConsistentStorage*) fcinfo->flinfo->fn_extra;

pccs->trglen = ARRNELEM(trg);

memcpy( pccs->data, query, VARSIZE(query) );

}

trglen = pccs->trglen;

for (i = 0; i < trglen; i++)

if (check[i])

/*

* $PostgreSQL: pgsql/contrib/pg_trgm/trgm_gist.c,v 1.14 2008/05/17 01:28:21 adunstan Exp $

* $PostgreSQL: pgsql/contrib/pg_trgm/trgm_gist.c,v 1.15 2008/07/11 11:56:48 teodor Exp $

*/

#include "trgm.h"

/* Oidsubtype = PG_GETARG_OID(3); */

bool *recheck = (bool *) PG_GETARG_POINTER(4);

TRGM *key = (TRGM *) DatumGetPointer(entry->key);

TRGM *qtrg = generate_trgm(VARDATA(query), VARSIZE(query) - VARHDRSZ);

TRGM *qtrg;

boolres = false;

char*cache = (char*) fcinfo->flinfo->fn_extra;

/* All cases served by this function are exact */

*recheck = false;

if ( cache == NULL || VARSIZE(cache) != VARSIZE(query) || memcmp( cache, query, VARSIZE(query) ) !=0 )

{

qtrg = generate_trgm(VARDATA(query), VARSIZE(query) - VARHDRSZ);

if (cache)

pfree(cache);

fcinfo->flinfo->fn_extra = MemoryContextAlloc(fcinfo->flinfo->fn_mcxt,

MAXALIGN(VARSIZE(query)) + VARSIZE(qtrg) );

cache = (char*) fcinfo->flinfo->fn_extra;

memcpy( cache, query, VARSIZE(query) );

memcpy( cache + MAXALIGN(VARSIZE(query)), qtrg, VARSIZE(qtrg) );

}

qtrg = (TRGM*)( cache + MAXALIGN(VARSIZE(query)) );

if (GIST_LEAF(entry))

{/* all leafs contains orig trgm */

float4tmpsml = cnt_sml(key, qtrg);