WebSphere Message Brokers
File: ac16910_
Writer: Bill Oppenheimer

Task topic

This build: July 31, 2007 21:18:47

Accessing the MQRFH2 header

When you construct MQRFH2 headers in a Compute node, there are two types of fields:

To differentiate between these two field types, insert a value in front of the referenced field in the MQRFH2 field to identify its type; a value for the NameValue buffer is not required because this is the default. The value that you specify for the header structure is (MQRFH2.Field).

For example:

Start of changeThe MQRFH2 header can be parsed using either the MQRFH2 parser or the MQRFH2C compact parser. To consume less memory, use the MQRFH2C compact parser by selecting the Use MQRFH2C compact parser for MQRFH2 Header check box on the input node of the message flow. This results in paths that contain MQRFH2C instead of MQRFH2; for example: SET OutputRoot.MQRFH2C.psc.Topic = 'department';End of change

Start of changeTarget MQRFH2 fields are created only if the headers are copied, and the MQRFH2C parser option is not selected on the MQInput node. In all other circumstances, an MQRFH2C field is created on output.End of change

Related concepts
Message flows overview
ESQL overview
Message modeling
Related tasks
Designing a message flow
Defining message flow content
Managing ESQL files
Related reference
Compute node
Database node
Filter node
ESQL reference
CARDINALITY function
DECLARE statement
SET statement
WHILE statement
MQRFH2 header
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This build: July 31, 2007 21:18:47

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