Datum
tsq_mcontains(PG_FUNCTION_ARGS)
{
TSQuery query = PG_GETARG_TSQUERY(0);
TSQuery ex = PG_GETARG_TSQUERY(1);
TSQuerySign sq,
se;
int i,
j;
QueryItem *iq,
*ie;
if (query->size < ex->size)
{
PG_FREE_IF_COPY(query, 0);
PG_FREE_IF_COPY(ex, 1);
PG_RETURN_BOOL(false);
}
sq = makeTSQuerySign(query);
se = makeTSQuerySign(ex);
if ((sq & se) != se)
{
PG_FREE_IF_COPY(query, 0);
PG_FREE_IF_COPY(ex, 1);
PG_RETURN_BOOL(false);
}
iq = GETQUERY(query);
ie = GETQUERY(ex);
for (i = 0; i < ex->size; i++)
{
if (ie[i].type != QI_VAL)
continue;
for (j = 0; j < query->size; j++)
{
if (iq[j].type == QI_VAL &&
ie[i].qoperand.valcrc == iq[j].qoperand.valcrc)
break;
}
if (j >= query->size)
{
PG_FREE_IF_COPY(query, 0);
PG_FREE_IF_COPY(ex, 1);
PG_RETURN_BOOL(false);
}
}
PG_FREE_IF_COPY(query, 0);
PG_FREE_IF_COPY(ex, 1);
PG_RETURN_BOOL(true);
}
Datum
gtsquery_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
TSQuerySign *key = (TSQuerySign *) DatumGetPointer(entry->key);
TSQuery query = PG_GETARG_TSQUERY(1);
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
TSQuerySign sq = makeTSQuerySign(query);
bool retval;
switch (strategy)
{
case RTContainsStrategyNumber:
if (GIST_LEAF(entry))
retval = (*key & sq) == sq;
else
retval = (*key & sq) != 0;
break;
case RTContainedByStrategyNumber:
if (GIST_LEAF(entry))
retval = (*key & sq) == *key;
else
retval = (*key & sq) != 0;
break;
default:
retval = FALSE;
}
PG_RETURN_BOOL(retval);
}
Datum
gtsquery_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
TSQuery query = PG_GETARG_TSQUERY(1);
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4);
TSQuerySign key = DatumGetTSQuerySign(entry->key);
TSQuerySign sq = makeTSQuerySign(query);
bool retval;
/* All cases served by this function are inexact */
*recheck = true;
switch (strategy)
{
case RTContainsStrategyNumber:
if (GIST_LEAF(entry))
retval = (key & sq) == sq;
else
retval = (key & sq) != 0;
break;
case RTContainedByStrategyNumber:
if (GIST_LEAF(entry))
retval = (key & sq) == key;
else
retval = (key & sq) != 0;
break;
default:
retval = FALSE;
}
PG_RETURN_BOOL(retval);
}
Datum
gtsquery_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *retval = entry;
if (entry->leafkey)
{
TSQuerySign *sign = (TSQuerySign *) palloc(sizeof(TSQuerySign));
retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
*sign = makeTSQuerySign(DatumGetTSQuery(entry->key));
gistentryinit(*retval, PointerGetDatum(sign),
entry->rel, entry->page,
entry->offset, FALSE);
}
PG_RETURN_POINTER(retval);
}
