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

WebSphere MQ V7.0 for i5/OS Fix Pack 7.0.0.2
WebSphere MQ V7.0 Fix Pack 7.0.0.2
WebSphere MQ V7.0 Fix Pack 7.0.1.1
WebSphere MQ V7.0.1 for i5/OS Fix Pack 7.0.1.1
WebSphere MQ V7.0 Fix Pack 7.0.1.2
WebSphere MQ V7.0.1 for i5/OS Fix Pack 7.0.1.2

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 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

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