WAS v8.5 > WebSphere applications > Service integration > MediationsMediation points
A mediation point is a location in a messaging engine at which messages are stored and mediated.
A mediation point is a specialized message point. When an administrator associates a mediation with a bus destination, one or more mediation points are created on the bus member, depending on the type of destination. For a mediated queue (used in point-to-point messaging), a mediation point is created for each queue point on the bus member. For a mediated topic space (used in publish/subscribe messaging), a mediation point is created for each publication point on the bus member.
A mediation point has a property called Initial State that determines the state of the mediation point when the messaging engine starts. Default is Started.
A mediation point also has a runtime property called Send Allowed that controls how messages are routed. This property overrides the properties set for the mediated destination.
The mediation point properties are described in the following table:
Mediation point properties. The first column contains the mediation point property names. The second column provides the property values. The third column includes the comments of the properties.
At run time, the administrator can control message delivery by starting and stopping mediations at mediation points using the dmgr console. For example, if the administrator starts a mediation at a mediation point, any messages sent to the destination are processed immediately by the mediation. If the administrator subsequently stops the mediation, any further messages that arrive at the destination are stored at the mediation point until the mediation restarts. The runtime state of a mediation point represents a runtime instance of the mediation.
Property name Value Comment Send Allowed Boolean: True or False True routes messages to the mediation point. False re-routes messages to a mediation point that has Send Allowed set to True. Messages are not routed to the exception destination. Note that if all mediation points are set to False, applications cannot send messages to that destination. Initial State Started or Stopped Default is Started. Initial State specifies the state of the mediation point when the host messaging engine is started for the first time. It is not a runtime control.
Related concepts:
Message points
Related
Configure mediation points
Operating mediations at mediation points
Administer messages on mediation points
Related information:
Mediations [Collection]
Mediations [Settings]
Mediation points [Collection]
Mediation points [Settings]