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WebLogic: The Definitive Guide by Avinash Chugh, Jon Mountjoy

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WebLogic’s Messaging Bridge

A messaging bridge provides interoperability between any two messaging systems. Messages arriving at one end of the bridge are forwarded automatically to other end, according to specified quality of service (QoS) and transaction semantics. You can set up a messaging bridge in the following scenarios:

  • You can configure a bridge between two JMS servers running in your domain, or between two JMS servers running in separate domains, even on different versions of WebLogic.

  • You can configure a bridge between WebLogic JMS and any other third-party JMS-compliant product — say, IBM MQSeries.

Clearly, it is up to the messaging bridge to handle all the forwarding and any necessary conversions, if it is interfacing with non-JMS products.

A messaging bridge runs between two destinations: a source destination from which messages are received, and a target destination to which the messages are sent. These bridge destinations can be either topics or queues. The bridge establishes a pipe between the source and target destinations, and ensures that messages received on the source destination are forwarded to the target destination. Applications that rely on WebLogic JMS can use bridges to integrate easily with other messaging products.

A messaging bridge provides additional facilities as well. In particular, a bridge can provide a certain QoS when forwarding messages from the source to the target destination. For instance, a bridge that provides an “exactly-once” guarantee ...

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