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From Ivan <xhh...@gmail.com>
Subject Re: Geronimo JMS Topic lookup and usage
Date Tue, 28 Jun 2011 11:38:21 GMT
For the ActiveMQ, I think the doc from its website should be helpful for
you, it describes that how AcitveMQ JNDI works. e.g. Dynamically creating
destinations section explains why an unexisting destination could be
lookuped.
http://activemq.apache.org/jndi-support.html

2011/6/28 Florian Schaetz <Florian.Schaetz@optitool.de>

> Hello,
>
> perhaps it's a stupid question, but I like to understand things, even if
> they work fine, so here it goes:
>
> I've got a piece of code in my application, that connects to the Topic on
> the ApplicationServer. It looks like this:
>
> Properties jndiProperties = new Properties();
> ... some properties
> jndiProperties.setProperty("topic.TopicName", "MyTopic");
>
> InitialContext initContext = new InitialContext(jndiProperties);
> Topic topic = (Topic) initContext.lookup("TopicName");
>
> Ok, this seems to work, I get access to the "MyTopic" topic. But there are
> two question:
>
> a) What's the whole process for? Why can't I simply as for "MyTopic"? Isn't
> there a direct way to access the topic, without the redirect through the
> properties? ...lookup("topic://MyTopic") or similar things do not seem to
> work.
>
> b) If I try ...lookup("SomeNonsense") I get an Naming-Exception, great. But
> if use the code above and the "MyTopic" doesn't exist on my Geronimo, I get
> no exceptions at all, even when sending to this non-existing topic - the
> message simply seems to never arrive somewhere. Is there a possibility to
> check if the topic is ok?
>
> Regards,
>
> Flo
>
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>


-- 
Ivan

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