[OPEN-ILS-DEV] EG 2.0 alpha4 problem with MARC defaults in Add MFHD Record

[Dan Scott]

On Wed, Nov 03, 2010 at 11:03:37PM -0400, Mike Rylander wrote:
> On Wed, Nov 3, 2010 at 10:49 PM, Dan Scott <dan at coffeecode.net> wrote:
> > On Wed, Nov 03, 2010 at 09:29:07PM +0100, Repke de Vries wrote:
> 
> [snip]
> 
> >
> >> - the 035 should not happen: this the very first time a MFHD record
> >> is created; only if some other library would take IISH's Holding
> >> Records, the IISH 001 and 003 should be pushed to the 035
> >
> > Agreed. Just to explain what's going on under the covers is that the
> > MFHD record is created with an auto-generated TCN (001), then when the
> > record is inserted into the database the update trigger runs and the 001
> > gets replaced with the record ID and the old 001 gets pushed into the
> > 035.
> >
> > I can't guarantee that we'll be able to fix this before the 2.0 release.
> > It would be great, though, if you could at least create a bug for this
> > so that we can at least track it.
> >
> 
> Just a thought on implementation ... since the goal is to detect when
> the record is brand new, as opposed to updated, perhaps we just need
> to test whether create_date and edit_date are the same and if so we
> can skip the 035 dance.
> 

Hmm. I got to the point of implementing this, then realized that there's
currently not a good way (that my sleep-deprived brain can think of, at
least) for the trigger to distinguish between a new record that was
imported via Z39.50 (where you would _want_ to push the 001/003 into the
035) and a new record that was created from scratch (where you would
want to just overwrite the 001/003 without creating a 035).

Any further thoughts, Mike? Given MARC templates, I don't think we can
really cheat with any magic values for the 003. Meh.