Thomas Lotze wrote at 2008-2-26 09:30 +0100: >Dieter Maurer wrote: > >> How often do you need it? >> It is worse the additional index? Especially in view that a storage may >> contain a very large number of transactions? > >We've done it differently now anyway, using real iterators which store >their state on the server and get garbage-collected when no longer needed.
Fine. In "dm.historical", you could find an alternative: It uses exponentially increasing prefetching and loads about 2*2**n records to get the first 2**n records. This means, it has amortized linear runtime complexity. -- Dieter _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
