On Thu, Jan 6, 2011 at 12:32 AM, Didier Durand <durand.did...@gmail.com> wrote:
> Hi,
>
> Don't see the code snippet in the page that you quote: it seems that I
> get another version of the page when i use your url.
Looks like the docs changed between then and now, probably coincident
with the 1.4.1 release.
> I would guess that your issue comes from the '-' interpreted as
> operand minus in the query.
I gathered as much from the exception, yes. Glancing through the new
docs, it looks like the question is moot, since the snippet I quoted
no longer appears. For now I'm explicitly storing the parent's id in
the child, which seems to work just fine. Though it looks like a
"mappedBy" annotation would also do the trick.
--
rwsims
> regards
> didier
>
> On Jan 5, 9:01 pm, decitrig <rws...@gmail.com> wrote:
>> In JDO, I'm trying to get all the ImportVendor entities that are children of
>> a specific ImportSession entity, which has a Set<ImportVendor>. I want to
>> page through them using query cursors. I've tried the following, based on
>> the docs:
>>
>> Query children = pm.newQuery(ImportedVendor.class);
>> children.setFilter("parent-pk == keyParam");
>> children.declareParameters("Long keyParam");
>> List<ImportedVendor> vendors = (List<ImportedVendor>)
>> children.execute(page.getSession().getId());
>>
>> I get an UnspportedDatastoreOperatorException saying that AppEngine doesn't
>> support the "-" operator.
>>
>> What am I doing wrong?
>>
>> Athttp://code.google.com/appengine/docs/java/datastore/transactions.htm...,
>> there's this snippet:
>> query = pm.newQuery("select from Account " +
>> "where parent-pk == keyParam " +
>> "parameters Key keyParam");
>>
>> Does this snippet actually work? I feel like I'm doing exactly the same
>> thing, and getting an exception. How do I specify a parent key in a query?
>>
>> --
>> rwsims
>
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