what is a TOPIC in Struts2

Posted by nacho4d on Stack Overflow See other posts from Stack Overflow or by nacho4d
Published on 2009-09-08T04:00:20Z Indexed on 2010/05/13 6:04 UTC
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HI, I am learning struts 2 with Tiles 2 and the word "topic" shows up very frequently... What is a topic?

for example:

The sx:a tag (specifically the ajax a template) and the div tag support an ajax event system, providing the ability to broadcast events to topics. You can specify the topics to listen to using a comma separated list in the listenTopics attribute. What this means is that when a topic is published, usually through the ajax a template, the URL specified in the href attribute will be re-requested.

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