boolean_t gvcst_query(void)
{ /* Similar to gvcst_order and gvcst_zprevious. In each case we skip over hidden subscripts as needed.
*
* 1 2 3 NULL <--- order/zprev...
* 1 2 3 NULL NULL
* 1 2 3 NULL NULL NULL <--- query from here...
* 1 2 3 NULL NULL NULL hidden
* 1 2 3 NULL NULL hidden
* 1 2 3 NULL hidden
* 1 2 3 hidden <--- ... skip this guy and go to bottom/top, respectively
* 1 2 3 7 <--- ... needs to end up here
*/
boolean_t found, is_hidden, sn_tpwrapped;
boolean_t est_first_pass;
gv_key save_currkey[DBKEYALLOC(MAX_KEY_SZ)];
int i;
int save_dollar_tlevel;
DEBUG_ONLY(save_dollar_tlevel = dollar_tlevel);
found = gvcst_query2();
# ifdef UNIX
assert(save_dollar_tlevel == dollar_tlevel);
CHECK_HIDDEN_SUBSCRIPT_AND_RETURN(found, gv_altkey, is_hidden);
IF_SN_DISALLOWED_AND_NO_SPAN_IN_DB(return found);
assert(found && is_hidden);
SAVE_GV_CURRKEY(save_currkey);
if (!dollar_tlevel)
{
sn_tpwrapped = TRUE;
op_tstart((IMPLICIT_TSTART), TRUE, &literal_batch, 0);
ESTABLISH_NORET(gvcst_query_ch, est_first_pass);
GVCST_ROOT_SEARCH_AND_PREP(est_first_pass);
} else
sn_tpwrapped = FALSE;
for (i = 0; i <= MAX_GVSUBSCRIPTS; i++)
{
INCR_GVSTATS_COUNTER(cs_addrs, cs_addrs->nl, n_query, (gtm_uint64_t) -1);
found = gvcst_query2();
CHECK_HIDDEN_SUBSCRIPT_AND_BREAK(found, gv_altkey, is_hidden);
assert(found && is_hidden);
/* Replace last subscript to be the highest possible hidden subscript so another
* gvcst_query2 will give us the next non-hidden subscript.
*/
REPLACE_HIDDEN_SUB_TO_HIGHEST(gv_altkey, gv_currkey); /* uses gv_altkey to modify gv_currkey */
}
if (sn_tpwrapped)
{
op_tcommit();
REVERT; /* remove our condition handler */
}
RESTORE_GV_CURRKEY(save_currkey);
assert(save_dollar_tlevel == dollar_tlevel);
# endif
return found;
}
boolean_t gvcst_queryget(mval *val)
{
bool found, is_hidden, is_dummy = FALSE, sn_tpwrapped;
boolean_t est_first_pass;
gv_key save_currkey[DBKEYALLOC(MAX_KEY_SZ)];
int save_dollar_tlevel;
DEBUG_ONLY(save_dollar_tlevel = dollar_tlevel);
found = gvcst_queryget2(val, NULL);
# ifdef UNIX
assert(save_dollar_tlevel == dollar_tlevel);
CHECK_HIDDEN_SUBSCRIPT(gv_altkey, is_hidden);
if (found && IS_SN_DUMMY(val->str.len, val->str.addr))
is_dummy = TRUE;
if (!found || (!is_dummy && !is_hidden))
return found;
IF_SN_DISALLOWED_AND_NO_SPAN_IN_DB(return found);
SAVE_GV_CURRKEY(save_currkey);
if (!dollar_tlevel)
{
sn_tpwrapped = TRUE;
op_tstart((IMPLICIT_TSTART), TRUE, &literal_batch, 0);
ESTABLISH_NORET(gvcst_queryget_ch, est_first_pass);
GVCST_ROOT_SEARCH_AND_PREP(est_first_pass);
} else
sn_tpwrapped = FALSE;
found = gvcst_query();
COPY_KEY(gv_currkey, gv_altkey); /* set gv_currkey to gv_altkey */
found = gvcst_get(val);
INCR_GVSTATS_COUNTER(cs_addrs, cs_addrs->nl, n_get, (gtm_uint64_t) -1); /* only counted externally as one get */
INCR_GVSTATS_COUNTER(cs_addrs, cs_addrs->nl, n_query, (gtm_uint64_t) -1);
if (sn_tpwrapped)
{
op_tcommit();
REVERT; /* remove our condition handler */
}
RESTORE_GV_CURRKEY(save_currkey);
assert(save_dollar_tlevel == dollar_tlevel);
# endif
return found;
}
