Datum gtsvector_compress(PG_FUNCTION_ARGS) { GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); GISTENTRY *retval = entry; if (entry->leafkey) { /* tsvector */ GISTTYPE *res; tsvector *val = (tsvector *) PG_DETOAST_DATUM(entry->key); int4 len; int4 *arr; WordEntry *ptr = ARRPTR(val); char *words = STRPTR(val); len = CALCGTSIZE(ARRKEY, val->size); res = (GISTTYPE *) palloc(len); SET_VARSIZE(res, len); res->flag = ARRKEY; arr = GETARR(res); len = val->size; while (len--) { *arr = crc32_sz(&words[ptr->pos], ptr->len); arr++; ptr++; } len = uniqueint(GETARR(res), val->size); if (len != val->size) { /* * there is a collision of hash-function; len is always less than * val->size */ len = CALCGTSIZE(ARRKEY, len); res = (GISTTYPE *) repalloc((void *) res, len); SET_VARSIZE(res, len); } /* make signature, if array is too long */ if (VARSIZE(res) > TOAST_INDEX_TARGET) { GISTTYPE *ressign; len = CALCGTSIZE(SIGNKEY, 0); ressign = (GISTTYPE *) palloc(len); SET_VARSIZE(ressign, len); ressign->flag = SIGNKEY; makesign(GETSIGN(ressign), res); res = ressign; } retval = (GISTENTRY *) palloc(sizeof(GISTENTRY)); gistentryinit(*retval, PointerGetDatum(res), entry->rel, entry->page, entry->offset, FALSE); } else if (ISSIGNKEY(DatumGetPointer(entry->key)) && !ISALLTRUE(DatumGetPointer(entry->key))) { int4 i, len; GISTTYPE *res; BITVECP sign = GETSIGN(DatumGetPointer(entry->key)); LOOPBYTE( if ((sign[i] & 0xff) != 0xff) PG_RETURN_POINTER(retval); );
Datum gtsvector_compress(PG_FUNCTION_ARGS) { GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0); GISTENTRY *retval = entry; if (entry->leafkey) { /* tsvector */ SignTSVector *res; TSVector val = DatumGetTSVector(entry->key); int32 len; int32 *arr; WordEntry *ptr = ARRPTR(val); char *words = STRPTR(val); len = CALCGTSIZE(ARRKEY, val->size); res = (SignTSVector *) palloc(len); SET_VARSIZE(res, len); res->flag = ARRKEY; arr = GETARR(res); len = val->size; while (len--) { pg_crc32 c; INIT_CRC32(c); COMP_CRC32(c, words + ptr->pos, ptr->len); FIN_CRC32(c); *arr = *(int32 *) &c; arr++; ptr++; } len = uniqueint(GETARR(res), val->size); if (len != val->size) { /* * there is a collision of hash-function; len is always less than * val->size */ len = CALCGTSIZE(ARRKEY, len); res = (SignTSVector *) repalloc((void *) res, len); SET_VARSIZE(res, len); } /* make signature, if array is too long */ if (VARSIZE(res) > TOAST_INDEX_TARGET) { SignTSVector *ressign; len = CALCGTSIZE(SIGNKEY, 0); ressign = (SignTSVector *) palloc(len); SET_VARSIZE(ressign, len); ressign->flag = SIGNKEY; makesign(GETSIGN(ressign), res); res = ressign; } retval = (GISTENTRY *) palloc(sizeof(GISTENTRY)); gistentryinit(*retval, PointerGetDatum(res), entry->rel, entry->page, entry->offset, FALSE); } else if (ISSIGNKEY(DatumGetPointer(entry->key)) && !ISALLTRUE(DatumGetPointer(entry->key))) { int32 i, len; SignTSVector *res; BITVECP sign = GETSIGN(DatumGetPointer(entry->key)); LOOPBYTE { if ((sign[i] & 0xff) != 0xff) PG_RETURN_POINTER(retval); } len = CALCGTSIZE(SIGNKEY | ALLISTRUE, 0); res = (SignTSVector *) palloc(len); SET_VARSIZE(res, len); res->flag = SIGNKEY | ALLISTRUE; retval = (GISTENTRY *) palloc(sizeof(GISTENTRY)); gistentryinit(*retval, PointerGetDatum(res), entry->rel, entry->page, entry->offset, FALSE); }