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From "Ellis Pritchard (JIRA)" <j...@apache.org>
Subject [jira] Created: (COCOON-2152) EventAware cache does not persist correctly when using the StoreEventRegistryImpl
Date Wed, 28 Nov 2007 09:41:43 GMT
EventAware cache does not persist correctly when using the StoreEventRegistryImpl
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                 Key: COCOON-2152
                 URL: https://issues.apache.org/jira/browse/COCOON-2152
             Project: Cocoon
          Issue Type: Bug
          Components: Blocks: Event Cache
    Affects Versions: 2.1.10, 2.1.11-dev (Current SVN), 2.2-dev (Current SVN)
            Reporter: Ellis Pritchard


When using the DefaultEventRegistryImpl the functionality now works as expected (events are
persisted and restored) after the patch applied in COCOON-2146.

However, there's still a problem with StoreEventRegistryImpl.

The behaviour is that it doesn't seem to actually write/restore any event entries: the maps
in the EventRegistryDataWrapper are empty (but not null) after restart, even though the actual
cache entry (key EVENTREGWRAPPER) was found in the Store, and the entries were present when
persist() was called.

The effect of this is to correctly restore the cached entries, but discard all the events,
which means that event-flushes don't work any more, which is not a good thing.

I've tracked this down to the fact that AbstractDoubleMapEventRepository#dispose() which performs
the persist(), then immediately clear()s the maps, WHICH HAVEN'T YET BEEN WRITTEN TO DISK
BY EHCACHE SHUTDOWN!

This code has probably never worked :)

Patches to follow; I propose modifying dispose() to null the map fields, but not perform clear()
on them.


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