Doctrine result cache not caching a query with a join

Question

I\'m using Doctrine 2.2.2 trying to do a query for a user entity along with the user\'s company. I want this query to be cached since the data inside won\'t change often, i

Answer 1

I've tested this with Doctrine 2.3 using:

$q->setResultCacheDriver( new \Doctrine\Common\Cache\ApcCache() )
  ->setResultCacheLifetime( 21600 )
  ->setResultCacheId( 'user_' . $identity );

When I run it the first time, I see the actual query in my sql-logger.
When I run it the second, third, etc time, I don't see anything in my sql-logger.

My conclusion is it's working fine.

I guess you either haven't got a result-cache configured, or you have a non-permanent result-cache (like ArrayCache) configured, or it's a bug in Dontrine 2.2.2 (although I can't find anything about it on jira).

PS: I gather from another question (Doctrine detaching, caching, and merging) that you've upgraded to Doctrine 2.3. Do you still have this problem?

PPS: Somewhere after Doctrine 2.0 (I think it was 2.2), the result-cache changed. In stead of caching the hydrated result, the sql-result is cached (and hydration takes place every run). If you want to cache the hydrated result, you'll have to use the hydration-cache (but be ware that those results are not merged into the EntityManager).