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From "Robert Liguori (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-3093) Client should provide handling of JMSPriority messages outside of range 0-9.
Date Thu, 16 Dec 2010 17:43:00 GMT
Client should provide handling of JMSPriority messages outside of range 0-9.
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                 Key: AMQ-3093
                 URL: https://issues.apache.org/jira/browse/AMQ-3093
             Project: ActiveMQ
          Issue Type: Bug
    Affects Versions: 5.4.2
            Reporter: Robert Liguori
            Priority: Minor


The JMS spec states, "JMS defines a ten-level priority value, with 0 as the lowest priority
and 9 as the
highest. In addition, clients should consider priorities 0-4 as gradations of
normal priority and priorities 5-9 as gradations of expedited priority."

As such, you would assume that the client would abide by these rules and only set the priority
between 0 and 9.

The ActiveMQ web console allows for inputting any string.  It appears as if the client is
looking for a value of type "byte" as it t transforms 128 into -128, and character strings
to 0.

I would recommend error handling for this condition by the client.  For example, if the value
is over 9, set the value to 9, 4 (highest normal) or 0 (lowest priority).... whatever makes
the most sense.... or don't process the message at all, as it's malformed (in a sense).

Note: Really large integers appears to mess up the queue altogether.


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