Last Value Topic

[ljf31415]

Does HornetQ have the ability to do last value topics?  I currently see last value queues in the documentation.  I am looking to use it for market data where the last value of the topic is sent to the consumer upon subscription, like the ActiveMQ feature LastImageSubscriptionRecoveryPolicy.

[clebert.suconic]

Everything in internally in HornetQ is a queue bound to some address. JMS Topic Subscriptions are just core-queues as anything else.

Having said that, if you want to apply the last-value sematics to your entire JMS Topic, all you have to do is:

<address-settings>
    <address-setting match="jms.topic.MyLastValueTopicName">
    
      ...
        <last-value-queue>true</last-value-queue>        
        ...
     </address-setting>
     
     ...
</address-settings>

However I'm not really sure if it makes sense, since the Last-value-queue will always receive the last-value anyway.

[ljf31415]

In the case of market data would a wild card setting work, something like <address-setting match="jms.topic.quotes.*"> so you would not have to list thousands of topics.

Thanks for the clarification.  Great product

[clebert.suconic]

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