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Mapping from a BLOB message to an output message using a graphical data map
You can use the Graphical Data Mapping editor to transform from a WebSphere® Message Broker message in the BLOB message domain.
When you create a new map, the BLOB message is available under the "IBM® supplied message models" category in the map input and output selection tree. Select the BLOB message as the map input, and then select your required output message and set its domain in the output message assembly (for example, XMLNSC).
For more information about creating a new map, see Creating a graphical data map file from a Mapping node.
The BLOB message provides a single element value of type xsd:hexBinary. When you transform a BLOB message, you must wire the value element of the input BLOB message into a transform that accepts an xsd:hexBinary type. For example, you could use a Move transform to set the BLOB binary data into an XML output message element with either an xsd:hexBinary or xsd:base64Binary type.