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Added note about result cache changes

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Benjamin Eberlei 2011-10-23 23:35:04 +02:00
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# ResultCache implementation rewritten
The result cache is completly rewritten and now works on the database result level, not inside the ORM AbstractQuery
anymore. This means that for result cached queries the hydration will now always be performed again, regardless of
the hydration mode. Affected areas are:
1. Fixes the problem that entities coming from the result cache were not registered in the UnitOfWork
leading to problems during EntityManager#flush. Calls to EntityManager#merge are not necessary anymore.
2. Affects the array hydrator which now includes the overhead of hydration compared to caching the final result.
The API is backwards compatible however most of the getter methods on the `AbstractQuery` object are now
deprecated in favor of calling AbstractQuery#getQueryCacheProfile(). This method returns a `Doctrine\DBAL\Cache\QueryCacheProfile`
instance with access to result cache driver, lifetime and cache key.
# EntityManager#getPartialReference() creates read-only entity
Entities returned from EntityManager#getPartialReference() are now marked as read-only if they