Re: Allow substitute allocators for PGresult.

Kyotaro Horiguchi <horiguchi.kyotaro@oss.ntt.co.jp>

From: Kyotaro HORIGUCHI <horiguchi.kyotaro@oss.ntt.co.jp>
To: heikki.linnakangas@enterprisedb.com, tgl@sss.pgh.pa.us
Cc: pgsql-hackers@postgresql.org
Date: 2011-12-01T10:18:04Z
Lists: pgsql-hackers
Hello, 

me> I'll put further thought into dblink-plus taking it into
me> account.
..
me> Please let me have a little more time.

I've inquired the developer of dblink-plus about
RegisterResourceReleaseCallback(). He said that the function is
in bad compatibility with current implementation. In addition to
this, storing into tuplestore directly seems to me a good idea
than palloc'ed PGresult.

So I tried to make libpq/PGresult be able to handle alternative
tuple store by hinting to PGconn, and modify dblink to use the
mechanism as the first sample code.

I will show it as a series of patches in next message.

regards,

-- 
Kyotaro Horiguchi
NTT Open Source Software Center