Re: SQL/MED dummy vs postgresql wrapper

Martin Pihlak wrote:
> How about extending the syntax by adding validator function(s) instead (similar
> to CREATE LANGUAGE)? For instance for postgresql wrapper we might want to check
> that a password is provided for a user mapping. The default validator for postgres
> wrapper would be supplied, but nothing prevents the user from replacing it with
> custom validator. Additionally it is possible to run-the same validator by
> connection lookup, so that the connection can be sanity checked.

> Additionally, if we are taking this route, it no longer makes sense to provide
> the empty shared libraries. We could drop the shared libraries altogether and
> loosen the syntax to:
> 
> CREATE FOREIGN DATA WRAPPER postgresql VALIDATOR postgresql_fdw_validator;
> or just:
> CREATE FOREIGN DATA WRAPPER postgresql;

I have implemented this now.