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https://issues.apache.org/jira/browse/DERBY-6891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15349727#comment-15349727
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ASF subversion and git services commented on DERBY-6891:
--------------------------------------------------------
Commit 1750214 from [~rhillegas] in branch 'code/trunk'
[ https://svn.apache.org/r1750214 ]
DERBY-6891: Improve the synchronization behavior of DerbyObservable; commit
derby-6891-01-ab-synchronizeMethods.diff.
> Investigate concurrency improvements to DerbyObservable and DerbyObserver
> -------------------------------------------------------------------------
>
> Key: DERBY-6891
> URL: https://issues.apache.org/jira/browse/DERBY-6891
> Project: Derby
> Issue Type: Improvement
> Components: Store
> Reporter: Rick Hillegas
> Attachments: derby-6891-01-aa-synchronizeMethods.diff,
> derby-6891-01-ab-synchronizeMethods.diff
>
>
> As part of derby-6856, we introduced a pair of classes which manage callbacks
> between classes in the Store layer. The classes are DerbyObservable and
> DerbyObserver. They replace the deprecated Observer and Observable classes in
> the JVM and allow Derby to build without deprecation warnings. Right now,
> callbacks are managed by a Vector. It is quite likely that the concurrency of
> these classes (and therefore of the Store layer) could be boosted by using
> some mechanism from java.util.concurrent.
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