[ZODB-Dev] RFC: ZODB 4.0 (without persistent)

[Tres Seaver]

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On 10/14/2012 06:23 PM, Jim Fulton wrote:
> On Sun, Oct 14, 2012 at 6:07 PM, Laurence Rowe <l at lrowe.co.uk> wrote:
>> On 14 October 2012 22:49, Jim Fulton <jim at zope.com> wrote:
>>> On Sun, Oct 14, 2012 at 5:28 PM, Tres Seaver 
>>> <tseaver at palladion.com> wrote: ...
>>>>> Well, I don't have time to chase BTrees.  This could always
>>>>> be done in ZODB 5. :)
>>>> 
>>>> I could help chop BTrees out, if that would be useful:  most of 
>>>> the effort will be purely subtractive in the ZODB package (I 
>>>> don't think anything depends on BTrees).
>>> 
>>> FileStorage uses BTrees for it's in-memory index.
>>> 
>>> MappingStorage used BTrees.
>>> 
>>> There are ZODB tests that use BTrees, but I suppose they could be 
>>> fixed.
>>> 
>>> I just don't think the win is that great in separating BTrees at 
>>> this time.
>> 
>> I don't think Hanno is suggesting removing BTrees as a dependency 
>> from ZODB but rather breaking out the BTrees package into a
>> separate PyPI distribution to make it more visible to potential
>> users outside of the ZODB community, e.g. 
>> http://www.reddit.com/r/Python/comments/exj74/btree_c_extension_module_for_python_alpha/
>
>>
>> 
> I had the impression that Tres was proposing more. <shrug>

Nope.  I just meant to break BTrees out and have ZODB depend on it.  I
thought is would be helpful to decouple the release process a bit, e.g.
so that the "pure-python BTrees" stuff could move forward independently
of the bigger ZODB release cycle.

>> To do that, refactoring tests shouldn't be required. I guess it 
>> could be argued that the fsBTree should be part of the ZODB rather 
>> than BTrees distribution, but leaving it where it is would be much 
>> easier.
> 
> Yup.
> 
> If someone wants to do this in the next couple of days, it would be 
> welcome.  I really want to get these releases going. (And I have 
> limited time.)

I have split BTrees out to a separately-releasable project:

  http://svn.zope.org/BTrees/trunk/

If going forward with that is OK, I would be glad to do the work to:

 - Release BTrees

 - Update ZODB trunk to depend on it

by the end of the weekend.



Tres.
- -- 
===================================================================
Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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