@Tristan thank you. Seems good :)
-Nischal
On Jun 14, 5:50 pm, Tristan <tristan.slomin...@gmail.com> wrote:
> depending on your needs, you *could* keep the 10 most recent updates
> with the user object (or whatever fits within 1MB). Think how the
> first 3 or 4 facebook wall post comments appear right away and then
> you have to click "see more". This way you could have your most recent
> status updates available fast, and then still have all the separate
> ones for archive access.
>
> On Jun 13, 1:59 am, nischalshetty <nischalshett...@gmail.com> wrote:
>
>
>
> > yeah, I want to do something similar, guess having it mapped to the
> > User object will make it inefficient. Will take your advice :)
>
> > -N
>
> > On Jun 13, 11:52 am, Prashant <nextprash...@gmail.com> wrote:
>
> > > I am not sure, it depends on what you want to implement.
>
> > > Anyway, storing 10k updates in a single entity will definitely exceed 1mb
> > > limit. Moreover, you wouldn't be needing all the updates at a time, it
> > > will
> > > be very inefficient implementation if you fetch all updates when you just
> > > need a few (say 10 or 20).
>
> > > Putting updates in a separate class will help you to implement efficient
> > > pagination. It will be easy to add and delete an updates.
>
> > > On 13 June 2010 11:54, nischalshetty <nischalshett...@gmail.com> wrote:
>
> > > > Thank you Prashant. I guess that's the second option of disowned
> > > > entities that you are talking about. Is that the best way to do this?
>
> > > > -N
>
> > > > On Jun 13, 11:20 am, Prashant <nextprash...@gmail.com> wrote:
> > > > > you can keep a separate status class, which will store only one update
> > > > per
> > > > > class. Every time user updates her status, create a new update class
> > > > > and
> > > > > persist it
>
> > > > > Update {
> > > > > private long userid;
> > > > > private string status;
>
> > > > > }
>
> > > > > when you need to display update just fetch all update entities where
> > > > userid
> > > > > == User's id.
>
> > > > > On 13 June 2010 11:44, nischalshetty <nischalshett...@gmail.com>
> > > > > wrote:
>
> > > > > > Hi All,
>
> > > > > > I need to clear a few doubts. Let's take an example so that you know
> > > > > > what my doubt is :
>
> > > > > > I have a User object and each user performs an operation - say a
> > > > > > status update.
>
> > > > > > User {
>
> > > > > > private Long id;
>
> > > > > > private List<StatusUpdate> updates;
>
> > > > > > }
>
> > > > > > Now this seems all good but if I'm not wrong Appengine has no
> > > > > > provision for lazy loading. Now my problem is, when a users
> > > > > > StatusUpdate reaches say 100k or more, the List in the above case
> > > > > > would have so many objects in it which I obviously do not need.
>
> > > > > > What solution is better? Make StatusUpdate as an unowned class and
> > > > > > keeping a reference to User? Any thoughts, I hope I am clear with my
> > > > > > requirement.
>
> > > > > > -Nischal
>
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