2014-12-11 07:17:29 -05:00
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# Routing Messages With Wild Cards
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2014-12-04 10:25:29 -05:00
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2015-03-03 11:12:34 -05:00
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Apache ActiveMQ allows the routing of messages via wildcard addresses.
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2014-12-04 10:25:29 -05:00
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If a queue is created with an address of say `queue.news.#` then it will
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receive any messages sent to addresses that match this, for instance
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`queue.news.europe` or `queue.news.usa` or `queue.news.usa.sport`. If
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you create a consumer on this queue, this allows a consumer to consume
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messages which are sent to a *hierarchy* of addresses.
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> **Note**
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>
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> In JMS terminology this allows "topic hierarchies" to be created.
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To enable this functionality set the property
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`wild-card-routing-enabled` in the `activemq-configuration.xml` file to
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`true`. This is `true` by default.
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2015-03-24 07:50:58 -04:00
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For more information on the wild card syntax take a look at [wildcard syntax](wildcard-syntax.md) chapter,
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also see the topic hierarchy example in the [examples](examples.md).
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