A user-defined input node is an extension to the broker that provides a new input node in addition to those supplied with the product. You create user-defined input nodes using either the C or Java programming language, to provide message input to a message flow from a message queue when you want your broker to accept messages from a transport protocol other than WebSphere MQ.
You can use a user-defined input node to receive data from an external data source and to allow that data to be processed within a message broker. In this way, you can complement the primitive input node types provided by WebSphere Message Broker
You cannot use a user-defined input node to provide the in terminal to a message subflow. If you want to provide the in terminal to a subflow, you must use the supplied Input node.
Before writing a user-defined node, you should make sure you are familiar with the concepts introduced in Planning user-defined extensions and User-defined extensions in the runtime environment .
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