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IC58382: CLASSCASTEXCEPTION FROM MQMESSAGEPRODUCER.GETDESTINATION() WITH TEMPORARY DESTINATIONS IN WEBSPHERE MQ VERSION 7

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APAR status

  • Closed as program error.

Error description

  • If a WebSphere MQ Version 7 Java Message Service (JMS)
    application uses a temporary destination to create an
    MQMessageProducer, MQQueueSender or MQTopicSubscriber and then
    calls either getDestination(), getQueue() or getTopic() (as
    appropriate), a ClassCastExeption will be thrown for the domain-
    specific methods. For the domain-independent methods, the class
    returned might cause ClassCastExceptions to be thrown later.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    This issue affects affect WebSphere MQ Version 7 Java Message
    Service (JMS) applications that create a
    com.ibm.mq.jms.MQMessageProducer (or domain specific subclasses)
    for a com.ibm.mq.jms.MQTemporaryDestination (or a subclass),
    and then makes either a getDestination(), getQueue() or getTopic
    () call.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows) +Java
    ****************************************************************
    PROBLEM SUMMARY:
    When an MQTemporaryDestination is used as the destination to
    create an MQMessgeProducer, it is held internally as a
    JMSDestination implementation (a "Common Client" destination).
    On a getDestination() call, this is not turned back into an
    MQDestination when it is returned.
    
    In the case of getQueue() or getTopic() calls, the returned
    destination is cast to an MQQueue or MQTopic as appropriate
    before being returned and a ClassCastException is thrown
    because the class being returned is of the wrong type.
    

Problem conclusion

  • The getDestination(), getQueue() and getTopic() methods on
    MQMessageProducer, MQQueueSender and MQTopicPublisher
    respectively have been changed to recreate objects of the
    correct type rather than Common Client objects, allowing them
    to be cast correctly.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.0.1
    --------           --------------------
    Windows            U200301
    AIX                U821414
    HP-UX (PA-RISC)    U820765
    HP-UX (Itanium)    U821296
    Solaris (SPARC)    U820766
    Solaris (x86-64)   U820880
    iSeries            tbc_p700_0_0_1
    Linux (x86)        U821407
    Linux (x86-64)     U821295
    Linux (zSeries)    U821294
    Linux (Power)      U820881
    
    The latest available maintenance can be obtained from
    'Websphere MQ Recommended Fixes'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
    
    If the maintenance level is not yet available, information on
    its planned availability can be found in 'Websphere MQ
    Planned Maintenance Release Dates'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC58382

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2008-10-13

  • Closed date

    2008-10-27

  • Last modified date

    2009-03-10

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    WMQ WINDOWS V7

  • Fixed component ID

    5724H7220

Applicable component levels

  • R700 PSY

       UP

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Document Information

Modified date:
10 March 2009