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Re: Largeobject Access Controls (r2460)

From: KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Alvaro Herrera <alvherre(at)commandprompt(dot)com>, KaiGai Kohei <kaigai(at)ak(dot)jp(dot)nec(dot)com>, Takahiro Itagaki <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jaime Casanova <jcasanov(at)systemguards(dot)com(dot)ec>, Greg Smith <greg(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Largeobject Access Controls (r2460)
Date: 2010-02-04 21:17:07
Message-ID: 4B6B3953.7000601@kaigai.gr.jp (view raw or flat)
Thread:
Lists: pgsql-hackers
(2010/02/05 3:27), Alvaro Herrera wrote:
> Robert Haas escribió:
>> 2010/2/4 KaiGai Kohei<kaigai(at)ak(dot)jp(dot)nec(dot)com>:
>>> (2010/02/04 0:20), Robert Haas wrote:
>>>> 2010/2/1 KaiGai Kohei<kaigai(at)ak(dot)jp(dot)nec(dot)com>:
>>>>> I again wonder whether we are on the right direction.
>>>>
>>>> I believe the proposed approach is to dump blob metadata if and only
>>>> if you are also dumping blob contents, and to do all of this for data
>>>> dumps but not schema dumps.  That seems about right to me.
>>>
>>> In other words:
>>>
>>>   <default>       ->  blob contents and metadata (owner, acl, comments) shall
>>>                   be dumped
>>>   --data-only   ->  only blob contents shall be dumped
>>>   --schema-only ->  neither blob contents and metadata are dumped.
>>>
>>> Can I understand correctly?
>>
>> No, that's not what I said.  Please reread.  I don't think you should
>> ever dump blob contents without the metadata, or the other way around.
>
> So:
> 	default:	both contents and metadata
> 	--data-only:	same
> 	--schema-only:	neither
>
> Seems reasonable.

OK... I'll try to update the patch, anyway.

However, it means only large object performs an exceptional object class
that dumps its owner, acl and comment even if --data-only is given.
Is it really what you suggested, isn't it?

Thanks,
-- 
KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp>

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