/*
* make_oper_cache_key
* Fill the lookup key struct given operator name and arg types.
*
* Returns TRUE if successful, FALSE if the search_path overflowed
* (hence no caching is possible).
*/
static bool
make_oper_cache_key(OprCacheKey *key, List *opname, Oid ltypeId, Oid rtypeId)
{
char *schemaname;
char *opername;
/* deconstruct the name list */
DeconstructQualifiedName(opname, &schemaname, &opername);
/* ensure zero-fill for stable hashing */
MemSet(key, 0, sizeof(OprCacheKey));
/* save operator name and input types into key */
strlcpy(key->oprname, opername, NAMEDATALEN);
key->left_arg = ltypeId;
key->right_arg = rtypeId;
if (schemaname)
{
/* search only in exact schema given */
key->search_path[0] = LookupExplicitNamespace(schemaname);
}
else
{
/* get the active search path */
if (fetch_search_path_array(key->search_path,
MAX_CACHED_PATH_LEN) > MAX_CACHED_PATH_LEN)
return false; /* oops, didn't fit */
}
return true;
}
/*
* make_opr_cache_key
* Fill the lookup key struct given operator name and arg types.
*
* Returns TRUE if successful, FALSE if the search_path overflowed
* (hence no caching is possible).
*/
static bool
make_opr_cache_key(struct opr_cache_key *key, struct list *opname, oid_t ltypeId, oid_t rtypeId)
{
char* schemaname;
char* opername;
/* deconstruct the name list */
split_qualified_name(opname, &schemaname, &opername);
/* ensure zero-fill for stable hashing */
pg_memset(key, 0, sizeof(struct opr_cache_key));
/* save operator name and input types into key */
strlcpy(key->oprname, opername, NAMEDATALEN);
key->left_arg = ltypeId;
key->right_arg = rtypeId;
if (schemaname) {
/* search only in exact schema given */
key->search_path[0] = lookup_explicit_ns(schemaname);
} else {
/* get the active search path */
if (fetch_search_path_array(key->search_path, MAX_CACHED_PATH_LEN) > MAX_CACHED_PATH_LEN)
return false; /* oops, didn't fit */
}
return true;
}
