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Posted to dev@activemq.apache.org by "Dejan Bosanac (JIRA)" <ji...@apache.org> on 2010/09/16 17:35:42 UTC

[jira] Resolved: (AMQ-2874) Add selector support to amq.js

     [ https://issues.apache.org/activemq/browse/AMQ-2874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dejan Bosanac resolved AMQ-2874.
--------------------------------

         Assignee: Dejan Bosanac
    Fix Version/s: 5.4.1
       Resolution: Fixed

> Add selector support to amq.js
> ------------------------------
>
>                 Key: AMQ-2874
>                 URL: https://issues.apache.org/activemq/browse/AMQ-2874
>             Project: ActiveMQ
>          Issue Type: New Feature
>    Affects Versions: 5.4.0
>         Environment: OSX 10.5.6
>            Reporter: Alex Dean
>            Assignee: Dejan Bosanac
>             Fix For: 5.4.1
>
>         Attachments: add_selector_support_to_amq_js.2.patch, add_selector_support_to_amq_js.patch
>
>
> The attached patch adds support for selectors to amq.js and the ajax adapters for jQuery, Prototype, and Dojo.  Unit tests (and a JavaScript testing framework to run them) are included for amq.js.  I'm happy to port the tests to another testing framework if you have one already.  I wasn't able to find anything like that in the current ActiveMQ sources, and this one seems pretty lightweight.  You can run the tests by pointing your browser to 'activemq-web-demo/src/test/javascript/amq_test.html' (as a local filesystem reference, no server required).
> I tested the ajax adapters both with and without selectors in the following browsers: FF 3.5 on WinXP, IE7 on WinXP, FF 3.5 on OSX, Safari 4 on OSX.  The additions of slectors appears to work as intended.
> Please especially review the test case 'testQueuedMessagesWithoutHeadersAreDeliveredInASinglePost'.  In this scenario, 5 messages are queued while a current POST is out to the server.  Messages are send, listen (with selector), send, listen (with selector), send.  The listen messages must go on their own.  If they were batched, the distinct selectors would be merged together and (I assume) applied to both listen commands.  The part I'm not sure about is that the messages are actually delivered in 3 POSTS.  (send, send, send), (listen), (listen).  The 3 outgoing messages all go in 1 POST, then the 2 listens are sent separately.  The thing I'm not sure about is that this means the messages are delivered in an order which differs from the order they were queued in.  I'm not sure if that could pose a problem or not.
> If that is undesired, it would be quite easy to ensure that messages are delivered in the same order they're queued in.  In the test case I mentioned above, it would just require that 5 separate POSTs be performed.  Not difficult.
> I'm of course very interested in other feedback on this patch, or on the tests.  I've not submitted code to this project before, so please let me know what I can do to get this patch into an acceptable form.  If you'd like me to attempt integrating these JavaScript tests into Hudson or another CI server, I can take a stab at that as well.

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