Excerpts from Hitoshi Harada's message of mar sep 25 02:11:14 -0300 2012:
> Of course you can
> look up type name conlusting SysCache and see if the type name is
> "hstore", but it's expensive to do it for every function invocation,
> so caching the hstore's oid in plv8 is the current workaround, which
> is not truly safe because the hstore's oid may change while caching.
Hm, couldn't you just register an invalidation callback with
CacheRegisterSyscacheCallback()?
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
