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From "Rajith Attapattu (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-792) Need to revise QueueBrowser implementation strategy
Date Tue, 28 Feb 2012 04:23:48 GMT

    [ https://issues.apache.org/jira/browse/QPID-792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217880#comment-13217880
] 

Rajith Attapattu commented on QPID-792:
---------------------------------------

Thanks for the comments guys. Let me move this conversation to the dev list.

Rajith
                
> Need to revise QueueBrowser implementation strategy
> ---------------------------------------------------
>
>                 Key: QPID-792
>                 URL: https://issues.apache.org/jira/browse/QPID-792
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Java Client
>    Affects Versions: M3
>            Reporter: Rajith Attapattu
>            Assignee: Robbie Gemmell
>             Fix For: 0.15
>
>
> While debuggin and issue I noticed the following behaviour in the AMQQueueBrowser class.
> 1) When we create a queue browser we do a subscribe immediately
> followed by a cancel. (And then we subscribe again when we enumerate).
> The rationale for doing so it to verify the selector is valid. This is
> very confusing for customers who look at the log and it is not appropriate IMHO.
> Currently we use client side selectors, so it is easy validate this. The
> above step is completely unnecessary.
> If we are to use server side selectors the right way to do is
> a)Send a subscribe with the selector
> b)Give message credits only when you call the enumerate method.

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