WAS v8.5 > WebSphere applications > Messaging resources > Interoperation with WebSphere MQ > Interoperation using a WebSphere MQ server

WebSphere MQ queue points and mediation points

A WebSphere MQ queue point is used, by a bus destination on a WebSphere MQ server, to hold messages that are ready to be put onto a WebSphere MQ queue. If messages for the WebSphere MQ queue (or queue-sharing group) are processed by a mediation before being made available to WebSphere MQ, then the service integration destination uses a WebSphere MQ mediation point.


WebSphere MQ queue point

A service integration queue-type destination includes one or more queue points. The destination can use these queue points to hold messages that are ready for a consumer to consume them. When you configure the destination on a bus member that is a WAS single server or cluster, these queue points are service integration message points. When you configure the destination on a bus member that is a WebSphere MQ server, the destination has a single queue point that is a WebSphere MQ queue and is called a WebSphere MQ queue point.

Message consumers, including message-driven beans, receive messages from a queue point. When the queue point is a WebSphere MQ queue point, message consumers receive the messages from the WebSphere MQ queue.

If there is no mediation associated with the destination, and the messages are not redirected to another destination or consumed by a message consumer, then message producers place messages on a queue point. If the queue point is a WebSphere MQ queue point, message producers place messages on the WebSphere MQ queue.


WebSphere MQ mediation point

We can mediate a service integration queue-type destination. When you mediate a destination it is split into two parts called pre-mediated and post-mediated. The pre-mediated part comprises mediation points, the post-mediated part comprises queue points.

The mediation receives messages from the pre-mediated part. If the messages are not redirected to another destination or consumed by a message consumer, the mediation places messages on the post-mediated part. Messages on the post-mediated part are delivered to a message consumer.

When you mediate a destination on a bus member that is a WebSphere MQ server, the destination has a single mediation point that is a WebSphere MQ mediation point, and the post-mediated part is a single queue point that is a WebSphere MQ queue.


Related concepts:

WebSphere MQ server and mediated exchange scenarios
Mediations
Permanent bus destinations


Related


Create a queue-type destination and assigning it to a WebSphere MQ queue
Mediating a destination using a WebSphere MQ queue as the mediation point


Reference:

createSIBDestination command
createSIBDestinations command
mediateSIBDestination command
unmediateSIBDestination command


Related information:

A practical introduction to message mediation -- Part 1

A practical introduction to message mediation -- Part 3

A practical introduction to message mediation -- Part 4

A practical introduction to message mediation -- Part 5
WebSphere MQ queue points [Collection]
WebSphere MQ queue points [Settings]


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