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https://issues.apache.org/jira/browse/CAY-2735?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nikita Timofeev updated CAY-2735:
---------------------------------
Fix Version/s: 5.0-M2
(was: 5.0-M1)
> Missing events in CommitLogListener in "excludeFromTransaction" mode
> --------------------------------------------------------------------
>
> Key: CAY-2735
> URL: https://issues.apache.org/jira/browse/CAY-2735
> Project: Cayenne
> Issue Type: Bug
> Affects Versions: 4.2.B1
> Reporter: Andrus Adamchik
> Priority: Minor
> Fix For: 5.0-M2
>
>
> I have a Persistent object X with the following {{@PostPersist}}
> {noformat}
> @PostPersist
> public void postPersist() {
> setPropX(...calculation_based_on_id_);
> getObjectContext().commitChanges();
> }
> {noformat}
> ... and a CommitLogListener in "excludeFromTransaction" mode, that needs to
> see both the new object creation and "propX" change in the same
> "onPostCommit" call:
> {noformat}
> CommitLogModule.extend()
> .addListener(listener)
> .excludeFromTransaction()
> .module());
> {noformat}
> When I create and commit a new X, it results in two commits in a single
> transaction (one from the user code, and another one - from PostPersist),
> with one INSERT and one UPDATE events respectively. But my "listener" only
> receives the update and 2 unexpected ObjectId change events (with "null"
> type).
> Removing "excludeFromTransaction", results in the listener correctly
> receiving first an INSERT and then an UPDATE events. But since those come as
> separate "onPostCommit" calls, it is hard to match them and make sense of the
> overall change.
> While I can probably find a workaround for my case, we need to think how the
> CommitLogFilter should behave when multiple operations occur in a single
> transaction. Need a better change merge algorithm to present a transparent
> "delta" across a bunch of operation.
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