JMS Bridge Components

A JMS bridge consists of two primary components:

• One or more links, each of which maps between a destination in the Message Queue broker and a destination in an external JMS provider or in another Message Queue broker

• A default Dead Message Queue (DMQ) where undeliverable messages are sent. Additional, special-purpose DMQs can also be specified.

To provide destination mapping, each link consists of:

• A source: the destination from which the JMS bridge receives messages. The source consists of a connection factory for creating connections to a JMS provider and a destination in that provider.

• A target: the destination to which the JMS bridge forwards messages received from the source. The target consists of a connection factory for creating connections to a JMS provider and a destination in that provider. Additionally, a target can optionally specify a message transformer that alters messages from the source before forwarding them to the target destination.

Links are unidirectional. Links that have an external JMS provider or another Message Queue broker as their source are called inbound links, and links that have the Message Queue broker as their source are called outbound links.

To configure these components, you specify several imq.bridge.bridgeName broker properties, and you create an XML configuration file that specifies the links, sources, targets, connection factories, destinations, and DMQs in the bridge. This XML configuration file must conform to the JMS bridge DTD.