now I use like this
class Feed(Entity):
has_property('posts',dynamic_loader(Post))
everything is ok !
My english is pool , so I don't know how to express the appreciate for
your help .
I just want to say THANKS VERY VERY MUCH :)
On Mon, Apr 7, 2008 at 12:39 AM, Michael Bayer <[EMAIL PROTECTED]> wrote:
>
>
> On Apr 6, 2008, at 11:27 AM, ZhangShen Peng(Uestc graduating...) wrote:
>
> > I tried both remove and clear
> > but seems have no effect
> >
> > I think maybe two reason:
> >
> > 1.elixir cached the query when I used Iike feed.posts ( OneToMany)
>
> mmm I dont think elixir is caching anything additional. However, if
> you have a collection on an object, that is just a plain collection,
> like a list - once its loaded, its loaded, unless you say
> session.expire(object, ['collectionname']).
>
> An alternative is to use a "Dynamic" relation, which will issue the
> SQL to the database on each access (but still will return objects
> cached in the Session if already found):
> http://www.sqlalchemy.org/docs/04/mappers.html#advdatamapping_relation_largecollections_dynamic
>
>
>
>
> > 2.mako cached the query result , because I did the feed.posts query
> > in template
>
> only if you are using Mako cache options explicitly - nothing caches
> by default.
>
>
>
>
> >
>
--
Blog(Chinese Edition):
http://zsp.javaeye.com/
Resume(Also Chinese):
http://zsp007.com.cn/
Where graduate soon , where to go ......
Double major:
Biomedical Engineering
Computer Science
-- Hierarch Zhang
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"sqlalchemy" group.
To post to this group, send email to sqlalchemy@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/sqlalchemy?hl=en
-~----------~----~----~----~------~----~------~--~---
