[Zope3-Users] Re: Blobs in Z3 anyone?

Chris McDonough chrism at plope.com
Wed Apr 19 21:13:40 EDT 2006


Actually, "stream iterator" support is independent of blobs.

There was some talk a while back about Zope 3 implementing some form  
of "IResult" interface that allowed for streaming.  I'm not sure  
where that ended up, though.  I seem to remember Jim checking  
something in.

- C


On Apr 19, 2006, at 7:34 PM, David Pratt wrote:

> Thanks Phillip for this info.
> Regards,
> David
>
> Philipp von Weitershausen wrote:
>> David Pratt wrote:
>>> Hi I had asked this question about a week ago with no response.
>>> Filesystem blobs are a valuable means of storing large object  
>>> data in
>>> the filesystem instead of the ZODB.  I have previously written a
>>> repository product in zope2 for blobs but would like to migrate  
>>> to Z3.
>>> Does Z3 have an equivalent stream iterator of that of zpublisher?  
>>> How
>>> are large objects currently handled in Z3 to get them into the DB
>>> efficiently if this is not the case? Many thanks.
>> Christian Theune and Chris McDonough have been working on ZODB blob
>> support for a while. The ZODB as our persistence layer is the right
>> level to add blob support, not Zope 3. Once in the ZODB, blobs can be
>> used across both Zope versions.
>> Perhaps you might want to contact them and ask them whether you  
>> can help
>> with something so that blobs will make it into ZODB 3.7 (scheduled  
>> to be
>> released with Zope 2.10/3.3)
>> Philipp
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