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https://issues.apache.org/activemq/browse/AMQNET-271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=61192#action_61192
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Timothy Bish commented on AMQNET-271:
-------------------------------------
Ultimately I wanted to try and meet this bit of the JMS API in the NMS client
libraries, although I was going to get to this in another issue. I figured
some of what we did here would be reusable in this context as well.
{quote}
*Provider Implementations of JMS Message Interfaces*
The JMS API provides a set of message interfaces that define the JMS message
model. It does not provide implementations of these interfaces.
Each JMS provider supplies a set of message factories with its Session object
for creating instances of messages. This allows a provider to use message
implementations tailored to its specific needs.
A provider must be prepared to accept message implementations that are not its
own. They may not be handled as efficiently as its own implementation; however,
they must be handled.
Note the following exception case when a provider is handling a foreign message
implementation. If the foreign message implementation contains a JMSReplyTo
header field that is set to a foreign destination implementation, the provider
is not required to handle or preserve the value of this header field.
{quote}
> 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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