PM55234: Evaluating absolute XPath expression against top-down constructed SDO may trigger ClassCastException

8.0.0.3: WebSphere Application Server V8.0 Fix Pack 3
8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15

APAR status

• Closed as program error.

Error description

• The problem occurs when attempting to evaluate an absolute XPath
  expression against a programmatically constructed Service Data
  Object which contains many-valued properties.
  
  ****************
  
  12/15/11 8:05:32:984 EST] 0000005b ProcessEngine I   CWWBE0069E:
  An
  error occurred during the selection of object
  'arrayOfStrings[1]'.
  com.ibm.bpe.plugins.DataXPathEvaluationFailedException:
  CWWBS0072E: The XPath expression evaluation failed:
  arrayOfStrings[1]  java.lang.ClassCastException:
  com.ibm.xml.sdo.model. TracingFastAccessCursor incompatible with
  com.ibm.xml.xci.dp.cache.dom.DOMCachedNode
  ****************************
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  Users of the Service Data Object (SDO) API  *
  *                  in IBM WebSphere Application Server V8.0    *
  *                  and WebSphere Process Server                *
  ****************************************************************
  * PROBLEM DESCRIPTION: Evaluating an absolute XPath            *
  *                      expression against a top-down           *
  *                      constructed Service Data Object may     *
  *                      trigger ClassCastException              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem occurs when attempting to evaluate an absolute
  XPath expression against a programmatically constructed
  Service Data Object which contains many-valued properties.
  An error such as the following may be seen:
  CWWBE0069E: An error occurred during the selection of object
  '<absolute XPath expression>'.
  com.ibm.bpe.plugins.DataXPathEvaluationFailedException:
  CWWBS0072E: The XPath expression evaluation failed:
  <absolute XPath Expression>  java.lang.ClassCastException:
  com.ibm.xml.sdo.model.FastAccessCursor incompatible with
  com.ibm.xml.xci.dp.cache.dom.DOMCachedNode
  With tracing enabled, it can be observed that the exception
  occurs in the CacheManager class as shown in the following
  stack trace:
  java.lang.ClassCastException:
  com.ibm.xml.sdo.model.TracingFastAccessCursor incompatible
  with com.ibm.xml.xci.dp.cache.dom.DOMCachedNode
  at
  com.ibm.xml.xci.dp.cache.dom.CacheManager.treatAsRoot(CacheManag
  er.java:1922)
  at
  com.ibm.bpe.xpathservice.impl.xci.XPathServiceImpl.evaluate(XPat
  hServiceImpl.java:489)
  at
  com.ibm.bpe.xpatheval.BasicXPathEvaluator.evaluate(BasicXPathEva
  luator.java:143)
  at
  com.ibm.bpe.engine.BpelActivityKindAssign.copyFromSpecVariablePa
  rtQuery(BpelActivityKindAssign.java:749)
  at
  com.ibm.bpe.engine.BpelActivityKindAssign.copyFromSpecVariablePa
  rtQuery(BpelActivityKindAssign.java:589)
  at
  com.ibm.bpe.engine.BpelActivityKindAssign.doActivate(BpelActivit
  yKindAssign.java:139)
  at
  com.ibm.bpe.engine.BpelActivityStateInactive.activateOrSkip(Bpel
  ActivityStateInactive.java:280)
  at
  com.ibm.bpe.engine.BpelEngineCore.continueControlLink(BpelEngine
  Core.java:290)
  at
  com.ibm.bpe.engine.BpelContinueLinkMessage3.execute(BpelContinue
  LinkMessage3.java:88)
  at
  com.ibm.bpe.engine.ProcessEngine.onMessage(ProcessEngine.java:15
  27)
  

Problem conclusion

• The problem has been corrected such that the
  ClassCastException will no longer occur.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.0.0.3.  Please refer to the Recommended Updates
  page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

Comments

APAR Information

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

  PM54591

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

Fix information

• Fixed component name

  WEBSPHERE APP S

• Fixed component ID

  5724J0800

Applicable component levels

• R800 PSY

     UP