Function get_transform_fromsql

src/backend/utils/cache/lsyscache.c:2723–2742

/*				---------- TRANSFORM CACHE ----------						 */

Oid
get_transform_fromsql(Oid typid, Oid langid, List *trftypes)
{
	HeapTuple	tup;

	if (!list_member_oid(trftypes, typid))
		return InvalidOid;

	tup = SearchSysCache2(TRFTYPELANG, typid, langid);
	if (HeapTupleIsValid(tup))
	{
		Oid			funcid;

		funcid = ((Form_pg_transform) GETSTRUCT(tup))->trffromsql;
		ReleaseSysCache(tup);
		return funcid;
	}
	else
		return InvalidOid;
}

Oid
get_transform_tosql(Oid typid, Oid langid, List *trftypes)