[jira] [Resolved] (QPID-7771) Allow exchange to exchange bindings to substitute the routing key

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[jira] [Resolved] (QPID-7771) Allow exchange to exchange bindings to substitute the routing key

JIRA jira@apache.org

     [ https://issues.apache.org/jira/browse/QPID-7771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alex Rudyy resolved QPID-7771.
------------------------------
    Resolution: Fixed

The changes were reviewed as part of pair programming by Keith and me

> Allow exchange to exchange bindings to substitute the routing key
> -----------------------------------------------------------------
>
>                 Key: QPID-7771
>                 URL: https://issues.apache.org/jira/browse/QPID-7771
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Java Broker
>            Reporter: Keith Wall
>            Assignee: Keith Wall
>             Fix For: qpid-java-broker-7.0.0
>
>         Attachments: 0001-QPID-7771-Java-Broker-Add-support-for-x-replacement-.patch
>
>
> QPID-6028 added support for exchange to exchange bindings.
> This feature will have utility in aiding the migration of pub/sub
> messaging application between the old Qpid JMS AMQP 0-x client and the Qpid JMS Client.  It will allow topic publishers and subscribers to be
> upgraded to the new client at different times, avoiding a big-bang upgrade and avoiding addressing changes.
> For a topic published by a Qpid JMS AMQP 0-x application to amq.topic/foo, an exchange to exchange binding {{amq.topic/foo => foo}} where foo is a fanout instance will allow an application using the Qpid JMS Client to subscribe successfully.
> For a topic published by a Qpid JMS Client application to fanout exchange instance foo, and exchange to exchange binding {{foo => amq.topic (arguments: replacement-routing-key=foo)}} will allow an application using the Qpid JMS AMQP 0-x client to successfully subscribe.
> For completeness {{ replacement-routing-key}} should be respected if presented for routing by an alternate binding.



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