Hi Nick, Thanks for your clarification! It helps me a lot.
On Wed, Sep 23, 2009 at 10:31 PM, Nick Johnson (Google) <nick.john...@google.com> wrote: > Hi Takashi, > > On Wed, Sep 23, 2009 at 1:56 PM, Takashi Matsuo <matsuo.taka...@gmail.com> > wrote: >> >> Hi, >> >> I noticed db.allocate_ids method is very useful when bulkloading. I >> have a question about the spec of this function. >> >> Q1. >> Isn't it possible to allocate ids for children entities of particular >> entity? >> It seems that this function allocates only for root entities. > > Yes - just pass a model or key representing a child entity you want to > allocate IDs for. > >> >> Q2. >> Isn't it possible to control what id to start allocating? >> Let's say I need to allocate ids from 1 to 1000 of particular kind. >> I've mistakenly invoke as follows: >> >> ids = db.allocate_ids(an_instance, 100) >> (100 instead of 1000) >> >> Of cause, ids are (1, 100), oops. So I tried to allocate the rest with >> 900 as second parameter. >> >> ids = db.allocate_ids(an_instance, 900) >> >> I expected that ids are (101,1000), but actual result is (2001, 2900). >> >> How can I allocate ids from 101 to 1000 explicitly in this case? > > IDs aren't guaranteed to be sequential - you can't safely use IDs that > weren't returned by allocate_ids or assigned to your models, and you can't > request a specific range. > -Nick Johnson >> >> -- >> Takashi Matsuo >> The father of kay framework >> >> > > > > -- > Nick Johnson, Developer Programs Engineer, App Engine > Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number: > 368047 > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
