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https://issues.apache.org/jira/browse/OPENJPA-117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12468734
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Abe White commented on OPENJPA-117:
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I don't think we should encourage use of user objects for tracking state we
could trivially expose ourselves. Most of our APIs allow you to "get" anything
you can "set", so I agree with Pinaki's approach of exposing the listener
collection unless our internal bookkeeping mechanism in this case makes it
inefficient for some reason.
> Collection of TransactionListeners registered to a Broker should be available
> as unmodifiable collection
> --------------------------------------------------------------------------------------------------------
>
> Key: OPENJPA-117
> URL: https://issues.apache.org/jira/browse/OPENJPA-117
> Project: OpenJPA
> Issue Type: Improvement
> Components: kernel
> Reporter: Pinaki Poddar
> Assigned To: Pinaki Poddar
> Priority: Minor
>
> Currently TransactionListeners can be added/removed to a broker but the list
> of transaction listeners registered to a particular broker is not available.
> Such a collection can be made available in read-only mode so a caller can
> determine whether to add a new listener or not, or whether a particular
> listener is already registered.
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