RS01007: [DIAGRAMMER] NPE IN ILVSUBGRAPHRENDERER.DRAWICON WHEN SAVING THE MANAGER WITH SVGSTREAMFACTORY

IBM ILOG JViews Charts Fix Pack 8.8.0.9
IBM ILOG JViews Diagrammer Fix Pack 8.8.0.9
IBM ILOG JViews Enterprise Fix Pack 8.8.0.9
IBM ILOG JViews Gantt Fix Pack 8.8.0.9
IBM ILOG JViews Maps Fix Pack 8.8.0.9
IBM ILOG JViews Maps for Defense Fix Pack 8.8.0.9
IBM ILOG JViews Telecom Graphic Objects Fix Pack 8.8.0.9
IBM ILOG JViews Charts Fix Pack 8.8.0.10
IBM ILOG JViews Diagrammer Fix Pack 8.8.0.10
IBM ILOG JViews Enterprise Fix Pack 8.8.0.10
IBM ILOG JViews Gantt Fix Pack 8.8.0.10
IBM ILOG JViews Maps Fix Pack 8.8.0.10
IBM ILOG JViews Maps for Defense Fix Pack 8.8.0.10
IBM ILOG JViews Telecom Graphic Objects Fix Pack 8.8.0.10

APAR status

• Closed as program error.

Error description

• NPE occurs when writing a manager with a subgraph
  (IlvSubgraphRenderer) to a SVGStreamFactory.
  java.lang.NullPointerException
  at
  ilog.views.sdm.renderer.IlvSubGraphRenderer.drawIcon(IlvSubGraph
  Renderer.java:2308)
  at
  ilog.views.sdm.renderer.IlvSubGraphRenderer.access$300(IlvSubGra
  phRenderer.java:276)
  at
  ilog.views.sdm.renderer.IlvSubGraphRenderer$GraphicManagerFrame.
  draw(IlvSubGraphRenderer.java:1644)
  at ilog.views.IlvManager.drawFrame(IlvManager.java:11381)
  at ilog.views.IlvManager.draw(IlvManager.java:11280)
  at
  ilog.views.svg.GenericGraphicTranslator.translate(GenericGraphic
  Translator.java:163)
  at
  ilog.views.svg.SVGDocumentBuilder.translate(SVGDocumentBuilder.j
  ava:805)
  at
  ilog.views.svg.SVGDocumentBuilder.fillElement(SVGDocumentBuilder
  .java:598)
  at
  ilog.views.svg.SVGDocumentBuilder.translate(SVGDocumentBuilder.j
  ava:684)
  at
  ilog.views.svg.SVGDocumentBuilder.doBuildDocument(SVGDocumentBui
  lder.java:466)
  at
  ilog.views.svg.SVGDocumentBuilder.buildDocument(SVGDocumentBuild
  er.java:330)
  at ilog.views.svg.SVGOutputStream.write(SVGOutputStream.java:67)
  at ilog.views.IlvManager.write(IlvManager.java:8019)
  at ilog.views.IlvManager.write(IlvManager.java:8057)
  at ilog.views.IlvManager.write(IlvManager.java:8075)
  
  There are two problem areas in this issue:
  
  1. SVGDocumentBuilderConfigurator.setTransformer does not accept
  identify transformer because it treats null transformer as
  identity transformer:
  
  2. IlvSubgraphRenderer.drawIcon assumes that the transformer
  parameter is not null so it accesses the transformer without
  checking if it is not null:
  

Local fix

• If the transformer of the current view is identity, temporary
  translate the transformer, set the transformer to the
  SVGDocumentBuilderConfigurator, then re-translate the
  transformer of the current view back to identify.
  
  public void saveAsSVG(IlvDiagrammer diagrammer, File f) throws
  IOException {
      IlvSDMView currentView = diagrammer.getView();
      // Create a view at the needed size
      IlvManager manager = currentView.getManager();
      // workaround
      boolean identity =
  currentView.getTransformer().isIdentity();
  
      SVGStreamFactory streamFactory = new SVGStreamFactory();
      manager.setStreamFactory(streamFactory);
      // workaround
     if( identity )
       currentView.translate(1, 1, false);
  
  streamFactory.getBuilderConfigurator().setTransformer(currentVie
  w.getTransformer());
      if( identity)
       currentView.translate(-1, -1, false);
      /**/
      // ends workaround
      manager.write(f.getCanonicalPath());
    }
  

Problem summary

• [Diagrammer] NPE in IlvSubgraphRenderer.drawIcon when saving
  the manager with SVGStreamFactory
  

Problem conclusion

• Source code has been modified to fix this problem.
  

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

  ILOG JVIEWS DIA

• Fixed component ID

  5724Y3500

Applicable component levels

• R880 PSY

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