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https://issues.apache.org/jira/browse/QPID-7495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Keith Wall resolved QPID-7495.
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Resolution: Fixed
Merge looks okay to me.
> [Java Broker] Add annotation into ManagedObjectFactoryConstructor for
> condition expression to evaluate the availability of conditionally available
> configured object
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: QPID-7495
> URL: https://issues.apache.org/jira/browse/QPID-7495
> Project: Qpid
> Issue Type: Improvement
> Components: Java Broker
> Reporter: Alex Rudyy
> Assignee: Keith Wall
> Attachments:
> 0001-Add-support-for-condition-expression-in-conditionall.patch,
> 0002-QPID-7495-Make-all-BDB-virtual-hosts-and-nodes-condi.patch
>
>
> Currently ConditionallyAvailable configured object implementations declared
> with annotation _ManagedObjectFactoryConstructor#conditionallyAvailable_ are
> required to have static method _isAvaialble()_ on configured object
> implementation class. If implementation class have compile time dependencies
> to external classes which might not be present on classpath, the loading of
> class for such implementation fails with ClassDefNotFoundError when calling
> static method Impl#isAvailable() from factory. Thus, in order to have working
> Impl#isAvailable(), the implementation should not be linked with classes
> which might not be available when call to check is made.
> Alternatively, we can implement a condition expression in
> _ManagedObjectFactoryConstructor_ which can be evaluated as part of
> _ConditionallyAvailable#isAvaialble()_ call. That would allow to relax the
> requirements to implementation class dependencies by having a separate class
> with static method for availability evaluation which will not have issues
> with class loading due to not being linked with not available classes
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