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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (ARTEMIS-1611) Artemis transformer interface is not backwards compatible
Date Wed, 17 Jan 2018 11:37:00 GMT


ASF GitHub Bot commented on ARTEMIS-1611:

Github user mtaylor commented on a diff in the pull request:
    --- Diff: artemis-server/src/main/java/org/apache/activemq/artemis/core/server/transformer/
    @@ -19,10 +19,18 @@
     import java.util.Map;
     import org.apache.activemq.artemis.api.core.Message;
    +import org.apache.activemq.artemis.core.server.ServerMessage;
     public interface Transformer {
    --- End diff --
    I'm not sure what you mean here Jeff.  Perhaps you could provide an example?  Note that
I was trying to keep this change as isolated as possible.  The only thing I have changed is
the transformer interface and added a couple extra classes back.

> Artemis transformer interface is not backwards compatible
> ---------------------------------------------------------
>                 Key: ARTEMIS-1611
>                 URL:
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 2.4.0
>         Environment:  
>            Reporter: Jeff Mesnil
>            Priority: Major
> We have users of Artemis 1.x that uses the transformer interface defined in org.apache.activemq.artemis.core.server.cluster.Transformer.
> This class was moved in Artemis 2.x in an incompatible way: [] that
redirects to []
> We are updating Artemis 2.x but it breaks the client configuration that was using the
old interface.
> We have strong requirement for backwards compatibility and we'd like to come up with
a solution so that the new interface could be made backwards compatible with the existing
> Would it be possible sense to reintroduce the old interface in the server.cluster package
so that old code would still be able to run with Artemis 2.x?

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