Re: BUG #13666: REASSIGN OWNED BY doesn't affect the relation underlying composite type

Alvaro Herrera wrote:

> I think the bug is that shdepReassignOwned shouldn't be calling
> AlterTypeOwnerInternal directly, because that routine is not of a high
> enough level.  We need another routine sitting between AlterTypeOwner
> and AlterTypeOwnerInternal which does the real work for the former
> (including calling ATExecChangeOwner for composites), after looking up
> the type OID from the name list; then shdepReassignOwned should call
> that new intermediate function.

I think that code is a bit confused.  In the attached patch I renamed
AlterTypeOwnerInternal to AlterTypeOwnerBare, and created a new
AlterTypeOwnerInternal which either calls ATExecChangeOwner (if
composite) of AlterTypeOwnerBare (if not); then, on ATExecChangeOwner we
can call *Bare if necessary, and on REASSIGN OWNED (shdepReassignOwned)
we can call AlterTypeOwnerInternal which now behaves correctly in the
case of a composite type.  There's some duplicate code that was
previously part of AlterTypeOwner directly; that's now calling
AlterTypeOwnerInternal instead.

There's an imcomplete comment above AlterTypeOwnerInternal related to a
function parameter that doesn't exist, introduced by 05f3f9c7b292; I
think this was supposed to control whether object access hooks are
called or not.  I wonder if we need to fix that -- this patch simply
removes the comment.  Cc'ing KaiGai and Robert about that.

(There's some inefficiency now that wasn't previously in that we open
pg_type repeatedly in ALTER TYPE OWNER, but I don't think we care about
that.)

This has been wrong all along; I wonder how come we hadn't gotten any
reports about this.  That said, the test coverage for REASSIGN OWNED
leaves something to be desired.  This patch adds a composite type to
that, but there's a lot more object types that would be worth covering.
(Note the supplied test case uses a "regrole" cast, so it's not
appropriate to apply that to 9.4 and earlier.)

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
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