PM82189: RDz 7.6.2.4, NullPointerException and performance problem in LPEX

APAR status

• Closed as program error.

Error description

• APAR Error Description:
  Abstract: In Rational Developer for System Z (RDz) version
  7.6.2.4, editing a COBOL file results in NullPointerExceptions
  
  Problem: The following errors are raised:
  
  a) error found in .log:
  Caused by: java.lang.NullPointerException
  at com.ibm.lpex.core.TextWindow$AccessibleListener.shown()
  at com.ibm.lpex.core.ViewListenerList.shown()
  
  b) error during copy/paste
  java.lang.NullPointerException
  at
  com.ibm.systemz.cobol.editor.lpex.parser.LpexMessageHandler.hand
  leSimpleMessage()
  at
  com.ibm.systemz.cobol.editor.lpex.parser.LpexMessageHandler.hand
  leMessage()
  at lpg.runtime.LexStream.reportLexicalError()
  at lpg.runtime.LexStream.reportError()
  at lpg.runtime.LexStream.reportError()
  at
  com.ibm.systemz.cobol.editor.core.copy.handler.CopyStatementHand
  ler.lexCpyBook()
  at
  com.ibm.systemz.cobol.editor.core.copy.handler.CopyStatementHand
  ler.parseCpyStmt()
  at
  com.ibm.systemz.cobol.editor.core.parser.CobolLexerLpgLexStream.
  handleCopyStatement()
  
  c) Another exception can also be found in the
  ?workspace?\.metadata\plugins\com.ibm.lpex\Editor.log
  java.lang.NullPointerException
      at org.eclipse.jface.text.AbstractDocument.getOffset(Unknown
  Source)
      at
  org.eclipse.jface.text.AbstractDocument.computeIndexInPositionLi
  st(Unknown
  Source)
      at
  org.eclipse.jface.text.AbstractDocument.computeIndexInPositionLi
  st(Unknown
  Source)
      at
  org.eclipse.jface.text.AbstractDocument.addPosition(Unknown
  Source)
      at
  org.eclipse.jface.text.AbstractDocument.addPosition(Unknown
  Source)
      at
  org.eclipse.jface.text.source.AnnotationModel.addPosition(Unknow
  n
  Source)
      at
  org.eclipse.jface.text.source.AnnotationModel.addAnnotation(Unkn
  own
  Source)
      at
  org.eclipse.ui.texteditor.AbstractMarkerAnnotationModel.addMarke
  rAnnotation(Unknown
  Source)
  
  
  Local fix:
  
  There is no known workaround at this time for b)
  
  For a) and c), a workaround is to turn off the Quick Diff ruler
  in menu  Windows ? Preferences, General ? Editors ? Text Editors
  ? Quick Diff
  

Local fix

Problem summary

• While editing in LPEX, the following errors may be found in the
  editor and workspace logs:
  a) error found in .log:
  Caused by: java.lang.NullPointerException
  at com.ibm.lpex.core.TextWindow$AccessibleListener.shown()
  at com.ibm.lpex.core.ViewListenerList.shown()
  
  b) error during copy/paste
  java.lang.NullPointerException
  at
  com.ibm.systemz.cobol.editor.lpex.parser.LpexMessageHandler.hand
  leSimpleMessage()
  at
  com.ibm.systemz.cobol.editor.lpex.parser.LpexMessageHandler.hand
  leMessage()
  at lpg.runtime.LexStream.reportLexicalError()
  at lpg.runtime.LexStream.reportError()
  at lpg.runtime.LexStream.reportError()
  at
  com.ibm.systemz.cobol.editor.core.copy.handler.CopyStatementHand
  ler.lexCpyBook()
  at
  com.ibm.systemz.cobol.editor.core.copy.handler.CopyStatementHand
  ler.parseCpyStmt()
  at
  com.ibm.systemz.cobol.editor.core.parser.CobolLexerLpgLexStream.
  handleCopyStatement()
  
  c) Another exception can also be found in the
  <workspace>\.metadata\plugins\com.ibm.lpex\Editor.log
  java.lang.NullPointerException
      at org.eclipse.jface.text.AbstractDocument.getOffset(Unknown
  Source)
      at
  org.eclipse.jface.text.AbstractDocument.computeIndexInPositionLi
  st(Unknown Source)
      at
  org.eclipse.jface.text.AbstractDocument.computeIndexInPositionLi
  st(Unknown Source)
      at
  org.eclipse.jface.text.AbstractDocument.addPosition(Unknown
  Source)
      at
  org.eclipse.jface.text.AbstractDocument.addPosition(Unknown
  Source)
      at
  org.eclipse.jface.text.source.AnnotationModel.addPosition(Unknow
  n Source)
      at
  org.eclipse.jface.text.source.AnnotationModel.addAnnotation(Unkn
  own Source)
      at
  org.eclipse.ui.texteditor.AbstractMarkerAnnotationModel.addMarke
  rAnnotation(Unknown Source)
  

Problem conclusion

• Occasionally when editing, certain timing issues caused problems
  while updating various parts of the editor model, and were
  logged in the log files.  LPEX will now attempt to prevent these
  timing issues and prevent errors from being logged.
  
  The problem listed in this APAR has been resolved with
  IBM Rational Developer for System z V7.6.2.5 Fix Pack which
  is available from the Recommended Fixes support download page:
  http://www-1.ibm.com/support/docview.wss?rs=2294&uid=swg27006335
  

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

  RATL DEV FOR SY

• Fixed component ID

  5724T0700

Applicable component levels

• R762 PSY

     UP