Also in Java API? On Monday, October 22, 2012 8:33:00 PM UTC+2, Alfred Fuller wrote: > > Backwards paging is currently supported, you can see this ndb example of > how to do it: > https://developers.google.com/appengine/docs/python/ndb/queries#cursors > > > On Wed, Oct 10, 2012 at 12:29 AM, Matija <[email protected]<javascript:> > > wrote: > >> Hey, >> is there any news about backwards cursor? Two years ago they were >> 'presented' in next gen queries google io presentation. We did get some >> features but not backwards cursors. >> >> Matija >> >> >> On Tuesday, October 9, 2012 4:14:29 AM UTC+2, Takashi Matsuo (Google) >> wrote: >> >>> >>> Hi James, >>> >>> First of all, you are right. You should always use cursors whenever >>> possible. >>> >>> We used to offer only 'offset' for going back and forth within query >>> results before 1.3.1 release. >>> http://googleappengine.**blogspot.jp/2010/02/app-** >>> engine-sdk-131-including-**major.html<http://googleappengine.blogspot.jp/2010/02/app-engine-sdk-131-including-major.html> >>> >>> Thus there is a lot of code with the 'offset' still running in the >>> production for a historical reason. It is hard for us to just kill this >>> feature. >>> However, as you guys noticed, please use cursors whenever you can. >>> >>> If you want us to improve our documentation, maybe you can file a bug on >>> our issue tracker with more concret suggestions rather than ranting with >>> the caps. >>> >>> Thanks, >>> >>> -- Takashi >>> >>> >>> On Tue, Oct 9, 2012 at 8:09 AM, James Gilliam <[email protected]>wrote: >>> >>>> You hurl insults while asserting offset has some usefulness without any >>>> support. So, give me an example of how it is anything but >>>> mathematically pathological. >>>> >>>> On Monday, October 8, 2012 11:07:45 AM UTC-7, James Gilliam wrote: >>>>> >>>>> I discovered that GAE charges you for skipping entities in Datastore >>>>> with OFFSET. So, if you want to retrieve 1 record at offset 10, you pay >>>>> for reading 11. >>>>> >>>>> This makes OFFSET expensive and WORTHLESS ... >>>>> >>>>> Offset should never be mentioned in the documentation without a >>>>> footnote that says you can't afford to use it. >>>>> >>>>> Kinda pissed about this. >>>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Google App Engine" group. >>>> To view this discussion on the web visit https://groups.google.com/d/** >>>> msg/google-appengine/-/**Kd0I90rUVLcJ<https://groups.google.com/d/msg/google-appengine/-/Kd0I90rUVLcJ> >>>> . >>>> >>>> To post to this group, send email to google-a...@googlegroups.**com. >>>> To unsubscribe from this group, send email to google-appengi...@** >>>> googlegroups.com. >>>> >>>> For more options, visit this group at http://groups.google.com/** >>>> group/google-appengine?hl=en<http://groups.google.com/group/google-appengine?hl=en> >>>> . >>>> >>> >>> >>> >>> -- >>> Takashi Matsuo | Developers Advocate | [email protected] >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine" group. >> To view this discussion on the web visit >> https://groups.google.com/d/msg/google-appengine/-/Ww6zx2oKOxMJ. >> >> To post to this group, send email to >> [email protected]<javascript:> >> . >> To unsubscribe from this group, send email to >> [email protected] <javascript:>. >> For more options, visit this group at >> http://groups.google.com/group/google-appengine?hl=en. >> > >
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