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https://issues.apache.org/jira/browse/QPID-1379?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gordon Sim closed QPID-1379.
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Resolution: Won't Fix
> Describe, test and show example of using message acquire from c++
> -----------------------------------------------------------------
>
> Key: QPID-1379
> URL: https://issues.apache.org/jira/browse/QPID-1379
> Project: Qpid
> Issue Type: Test
> Components: C++ Client
> Affects Versions: M3
> Reporter: Gordon Sim
> Assignee: Jonathan Robie
> Priority: Minor
> Attachments: acquire_example.tgz
>
>
> Attached is a simple example that shows how a subscriber in not-acquired mode
> can received messages and subsequently acquire them. The producer creates
> 'tasks' which are processed by one of as many acquirers as you want to have
> running; each of which will attempt to acquire the task before 'processing'
> it for a random amount of time.
> Captured here along with some introductory blurb on message acquire (below)
> for later polishing and inclusion into qpid svn tree/wiki in some form.
> A message is acquired by calling messageAcquire() on the session. This takes
> a SequenceSet argument which represents a set of message ids that are to be
> acquired (which may just be a single message).
> E.g.
> SequenceSet ids(message.getId());
> MessageAcquireResult result = session.messageAcquire(ids);
> You need to check that the acquire was successful. The response to
> messageAcquired is a set of message ids that were successfully acquired. By
> testing whether that includes the particular message you are interested in,
> you can determine whether or not the acquire succeeded.
> if (result.getTransfers().contains(message.getId())) {
> //acquire for that id succeeded
> } else {
> //that id could not be acquired
> }
> To use message acquire you should have subscribed in not-acquired mode. At
> present the recommended approach for this is to set the acquire mode to true
> on the subscription manager.
> E.g.
> SubscriptionManager subscriptions(session);
> subscriptions.setAcquireMode(true);
> subscriptions.subscribe(worker, "task_queue");
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