PI26025: REFERENCE AND INJECTION ERROR SCENARIOS SHOULD BE IMPROVED

8.5.5.4: WebSphere Application Server V8.5.5 Fix Pack 4
8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• The CWNEN0030E message refers to a factory, which does not make
  sense.  Additionally, the message is not clear that it is
  referring to entries in the java:comp/env/ namespace rather than
   the default JNDI namespace.  Finally, this message is
  unconditionally printed rather than being included in an
  exception message, which means expected JNDI lookup failures
  result in spurious messages being printed.
  
  An IllegalArgumentException occurs if an object being injected
  does not match the type of the field or method declared for
  injection, but it is not possible to determine the type of the
  injected object or which field was being processed.
  
  The CWNEN0047W message includes a stack trace that does not
  provide additional information and clutters the log files.
  
  The web container does not clearly display error messages that
  occur during injection failures.
  
  Application class loaders are retained by the reference and
  injection logic processing after the application is stopped.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Liberty Profile                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Reference and injection error scenarios *
  *                      need to be improved                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The CWNEN0030E message contained misleading information, and it
  was printed unconditionally rather than being included as part
  of an exception message.
  If an injected object does not match the type of the field or
  method being injected, then Java reflection will throw an
  IllegalArgumentException.  This text of this exception was
  included in the injection error message, but it does not contain
  sufficient detail to diagnose the problem.
  The CWNEN0047W error message unnecessarily includes a stack
  trace even though similar messages such as CWNEN0048W,
  CWNEN0049W, and CWNEN0050W do not.
  The web container was generating an FFDC incident when an
  injection error occurs, but it was not printing the injection
  error message text.
  The reference and injection engine tracks per-application data
  for java:global.  However, the application stop logic that
  should have been calling an internal "remove" method was
  incorrectly calling an "add" method, which results in incorrect
  retention of per-application state, including application class
  loaders.
  

Problem conclusion

• The CWNEN0030E message has been rewritten for clarity.
  Additionally, the message inserts for the reference name have
  been updated to include an explicit "java:comp/env/" prefix to
  make it clear that the names are relative to that context rather
  than the server default JNDI namespace.  Finally, the message is
  no longer explicitly printed and is instead included as
  exception message text.
  If an IllegalArgumentException is thrown by Java reflection, it
  is caught and a new CWNEN0074E message is included in the
  exception message text.
  The webcontainer has been updated to print the injection error
  message text.
  The reference and injection engine has been fixed to use the
  internal "remove" method during application stop.
  The fix for this APAR is currently targeted for inclusion in fix
  pack 8.5.5.4.  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:

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

Fix information

• Fixed component name

  WAS LIBERTY COR

• Fixed component ID

  5725L2900

Applicable component levels

• R855 PSY

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