I actually now have a (as it seems) working version of my first
approach, just using _setObject() etc. which even works recursively.
Has this some drawbacks except it looks a bit like a hack due to the
call of commit()?
I also have the deserialization working and basically it's just a
copying between two ZODBs I'd say.
On Wed, Jun 11, 2003 at 10:12:46AM -0400, Shane Hathaway wrote:
> Christian Scholz wrote:
> > I then detected the fascades in io.py which I tried to use (dunno if they're
> > thought to be used for such a purpose actually ;-):
> > root_mapper, conns = createMapper(fspath)
> > ei=ExportImport(root_mapper,conns)
> > ei.exportObject(object)
> This is *exactly* the purpose ExportImport is meant for, but it's quite
> new and unfinished. I'm glad you found it, although it's only in CVS,
> not in the released version of Ape.
Well, I am looking a bit on the repository and was reading
log messages ;-)
> > Unfortunately this results in an exception
> > Type: MappingError
> > Error Value: Path keychains require a name
> > So can maybe somebody point me to the easiest way to serialize an object
> > using the fsmapper (Shane? ;-) ?
> You're on the right track. I wonder what went wrong.
I looked into that a bit and in core/io.py line 316 you do
return kgen.makeKeychain(event, None, 1)
so name is None here as it seems. I just dunno if it's a special case
because I was doing something wrong or not ;-)
> > I am also interested in reading a serialized object from the fs again
> > and writing it to the fs. Also I wonder if I need to delete objects which
> > have been modified before another export or if there's a possibility to
> > just change it).
> Ape will assign new OIDs on import, so you don't have to delete objects
Well, at least with my first approach I need to do that because I just
do a folder._setObject() and this fails then of course.
> > (and the best would be of course some simple methods for reading/writing
> > a whole directory recursively. I don't know if something like this is already
> > in there somehow or how it works internally.. seems all a bit magic to me ;-)
> Again, ExportImport is designed to do this.
Will it also do it recursively? I found out that when I do it via
folder._setObject() it will also serialize all content which is quite
What is actually the result of an export? Where in the fs is it stored then?
Is the whole path to the object in ZODB is taken ?
But thanks for the answer and thanks for Ape! :)
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