datum_t
ginint4_consistent(PG_FUNC_ARGS)
{
bool *check = (bool *) ARG_POINTER(0);
strat_nr_t strategy = ARG_UINT16(1);
int32 nkeys = ARG_INT32(3);
/* pointer_p *extra_data = (pointer_p *) ARG_POINTER(4); */
bool *recheck = (bool *) ARG_POINTER(5);
bool res = FALSE;
int32 i;
switch (strategy)
{
case RTOverlapStrategyNumber:
/* result is not lossy */
*recheck = false;
/* at least one element in check[] is true, so result = true */
res = TRUE;
break;
case RTContainedByStrategyNumber:
case RTOldContainedByStrategyNumber:
/* we will need recheck */
*recheck = true;
/* at least one element in check[] is true, so result = true */
res = TRUE;
break;
case RTSameStrategyNumber:
/* we will need recheck */
*recheck = true;
/* Must have all elements in check[] true */
res = TRUE;
for (i = 0; i < nkeys; i++)
{
if (!check[i])
{
res = FALSE;
break;
}
}
break;
case RTContainsStrategyNumber:
case RTOldContainsStrategyNumber:
/* result is not lossy */
*recheck = false;
/* Must have all elements in check[] true */
res = TRUE;
for (i = 0; i < nkeys; i++)
{
if (!check[i])
{
res = FALSE;
break;
}
}
break;
case BooleanSearchStrategy:
{
QUERYTYPE *query = ARG_QUERYTYPE_P(2);
/* result is not lossy */
*recheck = false;
res = gin_bool_consistent(query, check);
}
break;
default:
elog(ERROR, "ginint4_consistent: unknown strategy number: %d",
strategy);
}
RET_BOOL(res);
}
Datum
ginint4_consistent(PG_FUNCTION_ARGS)
{
bool *check = (bool *) PG_GETARG_POINTER(0);
StrategyNumber strategy = PG_GETARG_UINT16(1);
/* int32 nkeys = PG_GETARG_INT32(3); */
/* Pointer *extra_data = (Pointer *) PG_GETARG_POINTER(4); */
bool *recheck = (bool *) PG_GETARG_POINTER(5);
bool res = FALSE;
/*
* we need not check array carefully, it's done by previous
* ginarrayextract call
*/
switch (strategy)
{
case RTOverlapStrategyNumber:
/* result is not lossy */
*recheck = false;
/* at least one element in check[] is true, so result = true */
res = TRUE;
break;
case RTContainedByStrategyNumber:
case RTOldContainedByStrategyNumber:
/* we will need recheck */
*recheck = true;
/* at least one element in check[] is true, so result = true */
res = TRUE;
break;
case RTSameStrategyNumber:
{
ArrayType *query = PG_GETARG_ARRAYTYPE_P(2);
int i,
nentries = ARRNELEMS(query);
/* we will need recheck */
*recheck = true;
res = TRUE;
for (i = 0; i < nentries; i++)
if (!check[i])
{
res = FALSE;
break;
}
}
break;
case RTContainsStrategyNumber:
case RTOldContainsStrategyNumber:
{
ArrayType *query = PG_GETARG_ARRAYTYPE_P(2);
int i,
nentries = ARRNELEMS(query);
/* result is not lossy */
*recheck = false;
res = TRUE;
for (i = 0; i < nentries; i++)
if (!check[i])
{
res = FALSE;
break;
}
}
break;
case BooleanSearchStrategy:
{
QUERYTYPE *query = (QUERYTYPE *) PG_DETOAST_DATUM(PG_GETARG_POINTER(2));
/* result is not lossy */
*recheck = false;
res = gin_bool_consistent(query, check);
}
break;
default:
elog(ERROR, "ginint4_consistent: unknown strategy number: %d",
strategy);
}
PG_RETURN_BOOL(res);
}
