move / migrate files to and from mediadb

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Hi all,


is there any method or similiar allowing to "move" / migrate blobs (files, 
images) from ZODB into mediadb or vice versa?

It seems that setObjProperty('filefieldname', <FILE>) (or the new aequivalent 
"attr()) did not save any type of blob in the mediadb (when a mediadb is 
activated/there). So i'm looking for a way to push single blobs / files from 
the ZODB into the mediadb or back. 

It would be nice to use the mediadb infrastructure instead of writing another 
own stuff here...

Regarding the ZMS sources there are just methods allowing recursively pushing 
out all - but not single - objects (recurse_addMediaDb() from 
manage_addMediaDb()) or vice versa.

I tried to experiment with uploadBlobField() and createBlobField() but with no 
luck so far, but i'm not understanding all partes of the ZMS sources there.

Or how can i tell attr() or setObjProperty() to store that blob into the 
mediadb and not the ZODB (i.e. with options like "mediadbStorable")? I did not 
understand why files uploaded "by hand" over ZMI got stored in the mediadb 
while set/save it by code not (in the case of images / DT_IMAGE that seems to 
work - for file / DT_FILE not what did not make any sense to me as images are 
just some "special" files / blobs).


Any hint or help is very welcome.

many many thanks for any help,


Niels.
-- 
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 Niels Dettenbach
 Syndicat IT & Internet
 http://www.syndicat.com
 PGP: https://syndicat.com/pub_key.asc
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