Function
Set the priority header of a message.
tibems_status
tibemsMsg_SetPriority(tibemsMsg
message,tibems_int
value );
CALL "tibemsMsg_SetPriority" USING BY VALUE message, BY VALUE value, RETURNING tibems-status END-CALL.
Parameter
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Description
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message
|
Set the priority of this message.
|
value
|
Set the priority to this value.
|
Sending calls set the priority header automatically. The JMS specification defines this call for symmetry.
Sending calls record the priority of a message in this header, based on either a property of the producer, or on a parameter to the send call.
The JMS specification defines ten levels of priority value, from zero (lowest priority) to 9 (highest priority). The specification suggests that clients consider 0–4 as gradations of normal priority, and priorities 5–9 as gradations of expedited priority.
Priority affects the order in which the server delivers messages to consumers (higher values first). The JMS specification does not require all providers to implement priority ordering of messages. (EMS supports priorities, but other JMS providers might not.)
TIBCO Enterprise Message Service™ C and COBOL Reference System Release 4.3, February 2006 Copyright © TIBCO Software Inc. All rights reserved www.tibco.com |