Topics


Topics can both export and import messages. Accordingly, you can configure topic definitions (in the configuration file topics.conf) with import and export properties that specify one or more external transports:

import

export

(For general information about topics.conf syntax and semantics, see topics. You can also configure topics using the administration tool command addprop topic.)

Example

For example, the following tibemsadmin commands configure the topic myTopics.news to import and export messages on three transports.

addprop topic myTopics.news import="SS01,SS02"  
addprop topic myTopics.news export="SS01,SS02,SS03" 

SmartSockets messages with subject /myTopics/news arrive at tibemsd over the transports SS01 and SS02. EMS clients can receive those messages by subscribing to myTopics.news.

EMS messages sent to myTopics.news are exported to SmartSockets over all three transports—SS01, SS02 and SS03. SmartSockets clients of the corresponding RTservers can receive those messages by subscribing to /myTopics/news.

Import Only when Subscribers Exist

When a topic specifies import on a connected transport, tibemsd imports messages only when the topic has registered subscribers.

Wildcards

Wildcards in the import and export properties obey EMS syntax and semantics (not SmartSockets syntax and semantics); see Destination Name—Syntax and Semantics.


TIBCO Enterprise Message Service™ User’s Guide
Software Release 4.3, February 2006
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