Re: [flexcoders] routeMessageToService and routeMessageToClient

Tue, 25 Jul 2006 16:18:31 -0700

I've made a little bit of progress on this front.  As suggested by an Adobe engineer, I created a custom ServiceAdapter that overrides invoke() like so:

import flex.messaging.messages.CommandMessage;
import flex.messaging.messages.Message ;
import flex.messaging.services.MessageService;
import flex.messaging.services.ServiceAdapter;

public class SimpleCustomAdapter extends ServiceAdapter {

    @Override
    public Object invoke(Message message)
    {
        MessageService msgService = (MessageService)service;
        System.out.println( "************" + message.getBody().toString() );
        msgService.pushMessageToClients(message, true);
        return null;
    }

Now, the alternate signature for pushMessageToClients accepts a Set of clientIDs as the first parameter.  This is what you would use to send a message to a specific client.  Now, the next question is how do I know which clients are subscribed to this destination?  I think I need to manage subscriptions to the destination so I can keep track of the clientIDs, but the docs are vague about how to do that.

Here's what my messaging-config.xml looks like:

...
    <adapters>
       ...
        <adapter-definition id="custom" class="test.SimpleCustomAdapter"/>
        ...
    </adapters>

   <destination id="customDest">

        <adapter ref="custom" />

    </destination>           
...

-Tom

On 7/21/06, m88e24 <[EMAIL PROTECTED]> wrote:

The selector attribute of the Consumer class allows messages to be
filtered based on information in the header of the message. The
downside is that a message is always delivered to all clients which is
inefficient and is also a potential security hazard.

I just want to deliver a message to a single client from a server side
Java class.

Both methods, routeMessageToService and routeMessageToClient, are
missing from the Flex Java API. The routeMessageToService obviously
routes messages to all clients connect to the same destination. It
maybe very likely that the routeMessageToClient will route the message
to a single peer. But the methods needs a MessageClient which is also
missing from the Java doc. With some googling I found a Java doc which
contains a very terse definition of the MessageClient. But only very
terse and of no use to someone who doesn't now the Flex internals.

Is there any example or some more verbose documentation on how to use
these classes. Much appreciate any help.


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