Am 28.06.2010, 23:42 Uhr, schrieb Laurence Rowe <l...@lrowe.co.uk>: > On 28 June 2010 21:27, Nitro <ni...@dr-code.org> wrote: >> ZODB is a general python object database with a much wider audience than >> just plone. It suits desktop applications just as well as applications >> you'd normally use twisted and pickle for. Forcing all those zope >> dependencies like buildout on people does not add to the attractiveness >> of >> ZODB for users outside zope. Having indices only in plone does also not >> make sense. Many applications would benefit from keyword, field, >> full-text, spatial, younameit indices. Yet extracting individual >> packages >> from zope/plone is impossible due to the slew of dependencies. While I >> can >> accept a dependency like zope.interface I don't accept a lot of the >> others. It really prevents ZODB from living up to its full potential in >> non-plone applications. > > Remember that Plone is an eight year old application that is built on > top of a 12 year old Application server. There has been much progress > since then (and plenty of people who build non-Plone ZODB based > applications), but the size of the codebase means it is not possible > to always be using the current best practice. > http://zope2.zope.org/about-zope-2/the-history-of-zope > > Nobody would recommend that you try to extract stuff from Plone or > Zope2. In my opinion there are two main sources of packages for > non-Zope2 dependent applications. > > * The ZTK extracted the core of Zope 3 and is used in application > servers such as Grok and BlueBream. It contains zope.catalog and it's > related packages. There are several extensions on top of this such as > zc.catalog and hurry.query. The 1.0 release has not been there yet, > but the underlying packages are stable. Installing zcatalog requires a > total of 34 packages (ZODB3 requires 10) > http://docs.zope.org/zopetoolkit/releases/packages-trunk.html > > * The Repoze project has focussed on making zope technologies more > easily accessible to applications outside of Zope. Whilst the ZTK > project has improved things a lot, it is still a relatively large > chunk to swallow whole. repoze.catalog is extracted from zope.catalog > and requires only zope.index in addition to ZODB3. > http://docs.repoze.org/catalog/ > > At the very lowest level are the indexes themselves such as zope.index > and zc.relation, a spatial index would fit in here too. > > (Health warning: I'm mostly a Plone developer, so do not yet have > experience using these packages)
This is all very useful information. Thanks for the pointers Laurence. -Matthias _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org https://mail.zope.org/mailman/listinfo/zodb-dev