WMQ Pub/Sub Topic to Queue bridge

In other queue managers it is possible to setup a bridge between a queue to a topic so that publishers and subscribers does not need to know that they are using a topic:

Example in TIBCO EMS

create Bridge source=queue:QName target=topic:TName

create Bridge so开发者_JS百科urce=topic:TName target=queue:QName

How do I do this in WMQ?

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See WebSphere MQ V7.0 Features and Enhancements page 47, it mentions the use of Alias queues and administrative subscriptions

WebSphere MQ V7.0 introduces an extension to the alias queue object that allows it to be resolved to the new topic object. This is useful for migrating point-to-point messaging applications to the Publish/Subscribe model. A traditional point-to-point application that puts messages into WebSphere MQ can operate as a publisher without any code changes by utilizing an alias queue that resolves to a topic object. This is implemented administratively by defining a topic object that maps to an appropriate topic string on which the messages are to be published. The original local queue is deleted and replaced by an alias queue of the same name that resolves to the topic object. Also note that a point-to-point application that gets messages from WebSphere MQ can operate as a subscriber without any code changes by defining an administrative subscription to a topic.

Example 9.3 on page 220 shows how to setup a administrative subscription from a Topic to a destination queue

DEFINE SUB(SUB.RETAIL.CAT) TOPICOBJ(MATT.RETAIL.CAT) DESTCLAS(MANAGED)
DEFINE SUB(SUB.MATTRETCAT) TOPICSTR(‘matt/retail/cat’) DESTCLAS(MANAGED)
DEFINE SUB(SUB.PROVCAT) TOPICSTR(‘matt/retail/cat’) DEST(SUB.PROVCAT.DESTQ)