Yes and no.
Not sure how EJB3 works so I cannot answer yes and no. I can tell you
what you can do.
1) you can define classes
class MyObj:
def say_three(self): return 3
2) you can make instances of the class persistent in various ways by
storing in cache
myobj=cache.ram('myobj',lambda: MyObj(),timeout)
3) you can make instanced persistant for each session
if not session.myobj: session.myobj=MyObj()
4) You can make in memory databases
db=SQBD('sqlite:memory:')
db.define_table('table_in_ram',SQLField('fieldname'))
and you can import/export the data.
import cStringIO
file=cStringIO.String()
db.table_in_ram.export_to_csv_file(file)
file.seek(0)
db.table_in_ram.truncate()
db.table_in_ram.import_form_csv_file(file)
Not sure how this compares with what you have in mind.
I do not expect and I would not want objects that are not stored in
database to expose the same API as if they were.
If you can give me a more explicit example perhaps I can give a
better answer.
Massimo
On Feb 19, 2:50 pm, luckyboy <[email protected]> wrote:
> Does web2py support non-persistent model classes ? ie, a core model
> class where some business logic can be performed while that class
> doesn't necessarily (directly) map to a database table ?
> For example the model data can be retrieved from a remote web service,
> or a set of remote queries ?
> In all other MVC frameworks this is possible: In EJB3.0, unless you
> declare model as @entity it is not persistent. In RAILS, you can
> simply not inherit from ActiveRecord, and you may need to implement
> some methods like find, etc.. , or you can use a plugin like
> ActiveModel. Is this doable in web2py? My first guess is no.
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