Re: ALTER EXTENSION .. ADD/DROP weirdness

On Mon, Oct 10, 2011 at 2:52 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
>> But there's a bigger problem: it seems to me that we have an
>> inconsistency between what happens when you create an extension from
>> scratch and when you upgrade it from unpackaged.  Both pg_buffercache
>> and pg_stat_statements just do this in the "upgrade from unpackaged"
>> case:
>
>> ALTER EXTENSION <ext-name> ADD view <view-name>;
>
>> They do *not* add the type and the array type.  But when the "1.0"
>> script is run, the type and array type end up belonging to the
>> extension.  This seems bad.
>
> Hmm, yeah, we need to make those consistent.
>
> The underlying issue here is whether objects dependent on an extension
> member should have direct dependencies on the extension too, and if not,
> how do we prevent that?  The recordDependencyOnCurrentExtension calls
> don't have enough information to know what to do, I think.

After looking at this code, it seems that we've generally made that
the caller's problem - e.g. in heap_create_with_catalog(), we skip
recordDependencyOnCurrentExtension() if we're dealing with a composite
type.  So I think the fix here is just to move the
recordDependencyOnCurrentExtension() call in pg_type.c inside the
if-block that precedes it, as in the attached patch.

Of course, this won't fix any damage already done, but it seems like
the right thing going forward.

-- 
Robert Haas
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