Triggering maps to run

The run unit within a IBM® Integration Bus execution group is a message flow. A message flow contains one or more input nodes that wait for input. After the nodes receive the input, they run the rest of the message flow.

When you use a IBM Transformation Extender map with IBM Integration Bus, the map can only be triggered to run within the context of a message flow, by a TX Map node. The message flow must also contain one or more input nodes. The TX Map node is not an input node, and can not start a message flow.

To configure a message flow that triggers a map to run, using the Message flow editor of the IBM Integration Toolkit, connect a TX Map node into a message flow, and then connect the input terminal of the TX Map node to the output terminal of a preceding node. Connections between objects in your message flows are called wires.

When the message flow is running, a message, which was propagated from the output terminal of the preceding node, arrives at the input terminal of the node in the form of a broker message tree. The TX Map node uses the content of the message tree to run the map.