[storm] what causes: storm.exceptions.LostObjectError: Can't obtain values from the database

[Gerdus van Zyl]

in ProductDiscount
you have both:
__storm_primary__ = 'amount', 'is_percent', 'start_date'
and
id = Int(name='discount_id', primary=True)

I don't think that you can have two definition of the primary key that are
different;

and then in ProductDiscount.getone
you use
one = store.get(ProductDiscount, (amount, is_percent, start_date) )
according to me you need to use find


On Thu, Jan 6, 2011 at 3:12 PM, Steve Kieu <msh.computing at gmail.com> wrote:

> Hello,
>
> I have a simple script (attached to this email )- and evrytime I run, i got
>
>
> stevek at lenovo:~/hang-hieu-uc/python$ python bulk_price_update.py
> Number of record: 202
> /usr/lib/python2.6/dist-packages/storm/database.py:342: Warning: Data
> truncated for column 'amount' at row 1
>   return function(*args, **kwargs)
> Traceback (most recent call last):
>   File "bulk_price_update.py", line 137, in <module>
>     process()
>   File "bulk_price_update.py", line 129, in process
>     new_pt.product_discount_id = new_pd.id; store.flush()
>   File "/usr/lib/python2.6/dist-packages/storm/properties.py", line 60, in
> __get__
>     return obj_info.variables[column].get()
>   File "/usr/lib/python2.6/dist-packages/storm/variables.py", line 178, in
> get
>     self.event.emit("resolve-lazy-value", self, self._lazy_value)
>   File "/usr/lib/python2.6/dist-packages/storm/event.py", line 53, in emit
>     if callback(owner, *(args+data)) is False:
>   File "/usr/lib/python2.6/dist-packages/storm/store.py", line 891, in
> _resolve_lazy_value
>     result, result.get_one())
>   File "/usr/lib/python2.6/dist-packages/storm/store.py", line 746, in
> _set_values
>     raise LostObjectError("Can't obtain values from the database "
> storm.exceptions.LostObjectError: Can't obtain values from the database
> (object got removed?)
>
> I am stuck at new idea to fix it, please help
>
> If I do not modify the product_discount_id of a product then it printed
> values fine and create in the history table fine. First I directly modify
> the  pt object, but then try to get a product again using pt.id, however
> it does not help in both cases.
>
> The DB is VirutalMart DB if it helps
>
> Many thanks in advance
>
>
>
> --
> Steve Kieu
>
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>
>


-- 
Gerdus van Zyl
http://about.me/gerdus
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