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https://issues.apache.org/activemq/browse/AMQNET-271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=61482#action_61482
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Timothy Bish commented on AMQNET-271:
-------------------------------------

I've implemented a solution locally using delegates for the Producer and 
Consumer Transformer.   One this I still am not crazy about is that the fact 
that these are exposed as Events in the NMS interfaces causes the 
implementations to allow for multiple registrations of transformers which we 
really don't want, only one would ever actually have its return value used the 
others would just be unnecessary overhead per invocation.

> Add support for a Message Transformer to be set in NMS API
> ----------------------------------------------------------
>
>                 Key: AMQNET-271
>                 URL: https://issues.apache.org/activemq/browse/AMQNET-271
>             Project: ActiveMQ .Net
>          Issue Type: Improvement
>          Components: ActiveMQ, EMS, MSMQ, NMS, Stomp
>    Affects Versions: 1.3.0
>            Reporter: Timothy Bish
>            Assignee: Timothy Bish
>            Priority: Minor
>             Fix For: 1.4.0
>
>
> Add support in the NMS API for users to set an custom MessageTransformer on 
> the NMS object: 
> IConnectionFactory
> IConnection
> ISession
> IMessageProducer
> IMessageConsumer
> The transformer would be an instance of IMessageTransformer which provides 
> two methods:
> {noformat}
>     /// <summary>
>     /// Interface for a class that can Transform a Message from one type to 
> another either
>     /// before consumption or before sent by a producer.
>     /// </summary>
>     public interface IMessageTransformer
>     {
>         /// <summary>
>         /// Called from an IMessageProducer prior to sending the IMessage, 
> allows the client
>         /// to perform a transformation on the Message prior to it being 
> sent.  This allows a
>         /// client to configure a single Producer to convert a Message to a 
> format that can be
>         /// processed by a specific receiving client.
>         /// </summary>
>         IMessage ProducerTransform(ISession session, IMessageProducer 
> producer, IMessage message);
>         /// <summary>
>         /// Called from an IMessageConsumer prior to dispatching the message 
> to the client either
>         /// by the 'Receive' methods or from the async listener event.  
> Allows the client to perform
>         /// message pre-processing before some messages are dispatched into 
> the client code.
>         /// </summary>
>         IMessage ConsumerTransform(ISession session, IMessageConsumer 
> producer, IMessage message);
>     }
> {noformat}

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