WebSphere Message Brokers
File: ar00840_
Writer: Cerys Giddings

Concept topic

This build: July 31, 2007 21:36:00

Message mappings overview

Message mappings define the blueprint for creating a message, where the created message is known as the target message. Messages can contain the following components: Messages can contain protocol-specific headers, which might need to be manipulated by WebSphere Message Broker. Dynamic setting of a message destination (routing) within the WebSphere Message Broker might also be required. Values for target message elements can be derived from: The logic to derive values can be simple or complex; conditional statements might be needed, as might loops, summations and other functions. All of the above mappings can be achieved using a Mapping node.

You can also create a reusable form of message map known as a submap. Submaps can be called from message maps and ESQL code.

You must have message definitions for any messages that you want to include in a message mapping. You can select the messages from your existing message definitions when you create a new message map. The following message domains are supported by the Mapping node: If you use an unsupported parser to perform mappings, for example IDOC, BLOB or a user-defined parser, error messages might be generated when messages pass through your message flow. See Change the target message domain for information about setting the message domain for the target message.

Find out more about message flows, ESQL, and mappings.

This section also contains information about Advanced schema structures.

Related concepts
Message flows, ESQL, and mappings
Message flows overview
Related tasks
Developing message mappings
Related reference
Message mappings
Mapping node
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This build: July 31, 2007 21:36:00

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