WAS v8.5 > WebSphere applications > Messaging resources > Interoperation with WebSphere MQ > Interoperation using a WebSphere MQ link > Publish/subscribe messaging through a WebSphere MQ link > Topic mapping on a WebSphere MQ linkWild cards in topic mapping
Wild cards can be used in topic mapping on a WebSphere MQ link for publish/subscribe messaging, but there are differences between wild cards in WAS service integration, and wild cards in a WebSphere MQ network.
Publish/subscribe messaging in the WebSphere MQ network uses wild cards # and +. These wild cards are represented as /. and * respectively in the service integration bus. However, the publish/subscribe bridge on the WebSphere MQ link supports only the /. wild card, and only at the end of the topic. For example, stock//. in the service integration bus is equivalent to stock/# in the WebSphere MQ network, meaning all messages with "stock" at the beginning of the topic.
When we use wild cards in the topic mappings that you enter on the WebSphere MQ link dmgr console panels, use the publish/subscribe bridge symbols, not the equivalent WebSphere MQ network symbols. The publish/subscribe bridge handles conversion automatically.
Related
Add or modifying topic mappings on the WebSphere MQ link publish/subscribe broker
Reference:
Topic names and use of wildcard characters in topic expressions