PK52040: WCM API RENDER METHOD CLASSCASTEXCEPTION JSR 168 V6011

APAR status

• Closed as program error.

Error description

• A ClassCastException can occur when using the render method of
  the WCM API with a JSR 168 portlet:
  [8/23/07 7:20:22:101 EDT] 0000005e Cmpnt         W   IWKPC1087X:
   Exception while rendering embedded inlined component type class
   com.aptrix.pluto.cmpnt.ArrayCmpnt. Inline Component class is:
   class com.aptrix.pluto.cmpnt.CmpntReference - Exception: java.
   lang.ClassCastException: org.apache.pluto.core.impl.
   RenderResponseImpl.
   Will continue rendering.
                            java.lang.ClassCastException: org.
                   apache.pluto.core.impl.RenderResponseImpl
    at com.aptrix.pluto.cmpnt.IndexCmpnt.getCurrentPage
       (IndexCmpnt.java:582)
    at com.aptrix.pluto.cmpnt.MenuCmpnt.resolve(MenuCmpnt.java:183
    at com.aptrix.pluto.cmpnt.CmpntUtils.resolveToText
       (CmpntUtils.java:179)
    at com.aptrix.pluto.cmpnt.BaseReferenceCmpnt.resolve
       (BaseReferenceCmpnt.java(Compiled Code))
    at com.aptrix.pluto.cmpnt.Cmpnt.resolveCmpnt(Cmpnt.java
       (Compiled Code))
    at com.aptrix.pluto.renderer.PlutoRenderer.renderCmpnt
       (PlutoRenderer.java(Compiled Code))
    at com.aptrix.pluto.renderer.PlutoRenderer.render
       (PlutoRenderer.java:86)
    at com.aptrix.pluto.renderer.PageRequestProcessor.processReque
       (PageRequestProcessor.java:76)
    at com.aptrix.pluto.renderer.RendererModule.processCacheable
       Request(RendererModule.java:914)
    at com.aptrix.pluto.renderer.RendererModule.processPageRequest
       (RendererModule.java:780)
    at com.ibm.workplace.wcm.api.WCM_Workspace.render
       (WCM_Workspace.java:2371)
    at com.WCMAPI.renderertest.RendererTestPortlet.doView
       (RendererTestPortlet.java:48)
  ....
  The RendererTestPortlet is a test portlet that makes the
  following calls:
  getRepository
      public static com.ibm.workplace.wcm.api.Repository getReposi
  getWorkspace
      Returns a Workspace object representing a view of the reposi
      for the specified Principal.
  createRenderingContext
      Creates a new rendering context.
  setRenderedContent
      Sets the full path of the Content to render. This is of the
      /Library/Site/SiteArea/SiteArea/Content
  render
    Renders the content, according to the RenderingContext that is
    in ( set above by setRenderedContent)
  ..
  This issue only appears to happen on v6011 and is only happening
  when the portlet is coded using the JSR 168 spec using the
  IBM Portlet API the issue is not recreated.
  

Local fix

• None ( use IBM Portlet API if possible ).
  

Problem summary

• Problem Summary: ClassCastException is seen when a request is
  made from a JSR168 portlet .
  
  Detailed Problem Description:
  
  A ClassCastException can occur when using the render method of
  the WCM API with a JSR 168 portlet:
  [8/23/07 7:20:22:101 EDT] 0000005e Cmpnt         W   IWKPC1087X:
  Exception while rendering embedded inlined component type class
  com.aptrix.pluto.cmpnt.ArrayCmpnt. Inline Component class is:
  class com.aptrix.pluto.cmpnt.CmpntReference - Exception:
  java.lang.ClassCastException: org.apache.pluto.core.impl.
  RenderResponseImpl. Will continue rendering.
  java.lang.ClassCastException:
  org.apache.pluto.core.impl.RenderResponseImpl
    at com.aptrix.pluto.cmpnt.IndexCmpnt.getCurrentPage
  (IndexCmpnt.java:582)
    at
  com.aptrix.pluto.cmpnt.MenuCmpnt.resolve(MenuCmpnt.java:183)
    at com.aptrix.pluto.cmpnt.CmpntUtils.resolveToText
  (CmpntUtils.java:179)
    at com.aptrix.pluto.cmpnt.BaseReferenceCmpnt.resolve
  (BaseReferenceCmpnt.java(Compiled Code))
    at com.aptrix.pluto.cmpnt.Cmpnt.resolveCmpnt(Cmpnt.java
  (Compiled Code))
    at com.aptrix.pluto.renderer.PlutoRenderer.renderCmpnt
  (PlutoRenderer.java(Compiled Code))
    at com.aptrix.pluto.renderer.PlutoRenderer.render
  (PlutoRenderer.java:86)
    at
  com.aptrix.pluto.renderer.PageRequestProcessor.processRequest
  (PageRequestProcessor.java:76)
    at
  com.aptrix.pluto.renderer.RendererModule.processCacheableRequest
  (RendererModule.java:914)
    at
  com.aptrix.pluto.renderer.RendererModule.processPageRequest(Rend
  ererModule.java:780)
    at
  com.ibm.workplace.wcm.api.WCM_Workspace.render(WCM_Workspace.jav
  a:2371)
    at
  com.WCMAPI.renderertest.RendererTestPortlet.doView(RendererTestP
  ortlet.java:48)
  

Problem conclusion

• Problem Analysis:
  
  The call to obtain the PortletResponse object in the code makes
  the assumption that the request came from an IBM Portlet API
  portlet.
  
  Failing Module: WCM - Web Content Management (General)
  
  Problem Solution:
  
   Modified the code to cast the object to the parent class so
  that no ClassCastException would be thrown.
  
  An interim fix is available for this APAR from Fix Central at:
  
  http://www.ibm.com/eserver/support/fixes/fixcentral/swgquickorde
  r?brandid=2&productid=Workplace%20Web%20Content%20Management&fix
  es=6.0.1.2-WCM-PK52040
  
  You will need to cut/paste the entire URL into a browser to
  resolve the address.
  

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

  WRKPLC WEB CON

• Fixed component ID

  5724I2900

Applicable component levels

• R60D PSY

     UP

• R60E PSY

     UP