JR45349: REASSIGNING A TASK BACK TO THE SAME SET OF USERS AS DEFINED FAILS, LEAVING THE TASK NOT OPERABLE

Version 8.0.1 Fix Pack 1 for the IBM Business Process Manager products
Version 7.5.1 Fix Pack 2 for the IBM Business Process Manager products

APAR status

• Closed as program error.

Error description

• Reassigning a task back to the same set of users as defined (as
  potential owners of the task) before the task was claimed
  fails, leaving the task not operable, i.e. unclaimable.
  .
     This may also result in the following exception when trying
  to display the tasks.
  .
  [1/22/13 10:40:01:529 FNT] 0000008d servlet       E
  com.ibm.ws.webcontainer.servlet.ServletWrapper service
  SRVE0068E: Uncaught exception created in one of the service
  methods of the servlet /jsp/tiles/ProcessDetails.jsp in
  application IBM_BPM_Portal_bps.AppTarget. Exception created :
  java.lang.NullPointerException
   at com.ibm._jsp._ProcessDetails._jspService(_ProcessDetails.
  java:1048)
   at
  com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:99)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
   at com.ibm.ws.webcontainer.servlet.ServletWrapper.service
  (ServletWrapper.java:1657)
   at com.ibm.ws.webcontainer.servlet.ServletWrapper.service
  (ServletWrapper.java:1597)
   at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter
  (WebAppFilterChain.java:104)
   at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter
  (WebAppFilterChain.java:77)
   at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter
  (WebAppFilterManager.java:908)
   at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest
  (ServletWrapper.java:934)
   at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest
  (ServletWrapper.java:502)
  

Local fix

• N/A
  

Problem summary

• Problem Description:
  When defining task assignment (aka task routing) in terms of a
  custom user list, the sequence of claiming the
  task and assigning it back to the initial custom user list will
  result in the task not being assigned to
  any user or role, thus rendering the task not operable.
  
  Problem Summary:
  Custom user lists are internally mapped onto ad-hoc groups. In
  order to keep the number of ad-hoc group low, such
  groups are deleted internally after claiming a task. Such
  deletion concerns DB entries, but not the
  group entries maintained in a memory cache. When reassigning the
  task back to the initial custom user list, the
  initial ad-hoc group is found in the memory cache, but has no
  entry in the database.
  
  Problem Conclusion:
  The deletion of the ad-hoc group is removed, so that cach and
  database entries fr the ad-hoc group never get out of sync.
  Removal of unnecessary ad-hoc groups is covered by a separate
  mechanism.
  

Problem conclusion

• Problem fixed
  iFix available on top of V751 FP1
  

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:

  JR45350 JR45351

Fix information

• Fixed component name

  BPM ADVANCED

• Fixed component ID

  5725C9400

Applicable component levels

• R751 PSY

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