Yes this was in fact the case, works fine with in memory caching.
Should I still lodge a ticket?
G
On Thu, May 20, 2010 at 6:14 PM, Andrus Adamchik <andru..bjectstyle.org> wrote:
> One thing to keep in mind here is that OSQueryCacheFactory is not tested
> with persistent cache... It works perfect with in-memory cache, but I always
> thought that persisting the data that is sort of already persisted in the DB
> doesn't buy us much, so that scenario never got any attention. E.g. I
> wouldn't be surprised if de-serialization of the cache causes even more
> issues.
>
> Andrus
>
>
> On May 20, 2010, at 10:03 AM, Andrey Razumovsky wrote:
>
>> Looks like a bug. Could you please open a ticket?
>>
>> 2010/5/20 Gary Jarrel <garyjarre..mail.com>
>>
>>> Hi,
>>> I managed to get the cache issue described below resolved, my error
>>> with the DataContextFilter that I was using and it was overwriting the
>>> modeler configuration when initializing shared config.
>>>
>>> I've ran into another issue with the following code:
>>>
>>> SelectQuery q = proto.queryWithParameters(params);
>>> q.addPrefetch(RichProduct.MANUFACTURER_PROPERTY);
>>> q.addPrefetch(RichProduct.RAW_PRODUCT_PROPERTY);
>>> q.setCacheStrategy(QueryCacheStrategy.SHARED_CACHE);
>>> q.setCacheGroups("products");
>>>
>>> Upon execution of this query I get the following exception:
>>>
>>> ERROR com.opensymphony.oscache.base.algorithm.AbstractConcurrentReadCache
>>> [oscache] Exception persisting RichProduct/subCategory =
>>> <ObjectId:SubCategory, category_id=1,
>>> id=1>/categoryName/subCategoryName/cost
>>> com.opensymphony.oscache.base.persistence.CachePersistenceException:
>>> Unable to write
>>> '/tmp/cache/application/0/0/5/005126BC80FABAA4C582919EDF0B9304.cache'
>>> in the cache. Exception: java.io.NotSerializableException, Message:
>>> org.apache.cayenne.access.ListWithPrefetches
>>> at
>>>
>>> com.opensymphony.oscache.plugins.diskpersistence.AbstractDiskPersistenceListener.store(AbstractDiskPersistenceListener.java:376)
>>> at
>>>
>>> com.opensymphony.oscache.plugins.diskpersistence.AbstractDiskPersistenceListener.store(AbstractDiskPersistenceListener.java:238)
>>>
>>> <rest of stack trace removed>
>>>
>>> If I however remove the prefetches then the caching works fine.
>>>
>>> Looking at the source code for ListWithPrefetches it does not
>>> implement Serializable, could this be the reason for it, or am I
>>> missing something!
>>>
>>> Thank you
>>>
>>> Gary
>>>
>>> On Wed, May 19, 2010 at 6:17 PM, Gary Jarrel <garyjarre..mail.com>
>>> wrote:
>>>>
>>>> Hi Guys,
>>>> I seem to full of questions today!
>>>> In the modeler I've got org.apache.cayenne.cache.OSQueryCacheFactory for
>>>
>>> Query Cache Factory, 5000 objects and using shared cache.
>>>>
>>>> I can see OSCache initializing in the logs and everything appears to be
>>>
>>> fine.
>>>>
>>>> However when I try to get the cache from the ObjectContext like so:
>>>> QueryCache cache = ((BaseContext) getObjectContext()).getQueryCache();
>>>> The cache that is being returned is
>>>
>>> the org.apache.cayenne.cache.MapQueryCache
>>>>
>>>> I've traced the calls and can see that the call got getQueryCache() goes
>>>
>>> to MapQueryCacheFactory despite the fact that the modeler
>>> specifies OSQueryCacheFactory
>>>>
>>>> Am I doing something wrong here?
>>>> Thank you
>>>> Gary
>>>
>>
>>
>>
>> --
>> Andrey
>
>
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