Skip to main content

Webcenter Menu: invalidate cache

We where getting an exception when executing some code that worked on PS3 on PS5. (We are reconstructing our menu based on user roles and we can masquerade as another user on click of a button)

The stack trace of the error included:



<SiteStructureResource><getChildren>
javax.naming.NamingException [Root exception is java.lang.NullPointerException]
at oracle.adfinternal.rc.jndi.CatalogContextWrapper.listBindings(CatalogContextWrapper.java:654)
at oracle.adfinternal.rc.jndi.CatalogContextWrapper.listBindings(CatalogContextWrapper.java:616)


Caused by: java.lang.NullPointerException
at oracle.adfinternal.rc.jndi.FolderContext.loadCache(FolderContext.java:338)
at oracle.adf.rc.spi.jndi.InMemoryContext.checkCacheLoaded(InMemoryContext.java:1401)
at oracle.adfinternal.rc.jndi.FolderContext.loadCache(FolderContext.java:383)

java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor916.invoke(Unknown Source)






  public void refreshMenu() {



        SiteStructure model = SiteStructureContext.getInstance().getCurrentModel();

        model.invalidateCache();

        if (this.getLeftMenu() != null)

            AdfFacesContext.getCurrentInstance().addPartialTarget(this.getLeftMenu());

  }





This may not be the best solution but it is a good workaround for what I think is a bug in PS5.











public void refreshMenu() {

        SiteStructure model = SiteStructureContext.getInstance().getCurrentModel();

        model.invalidateCache();

    redirectCurrentPage();

}













public static void redirectCurrentPage() {



  FacesContext fctx = FacesContext.getCurrentInstance();

  ExternalContext ectx = fctx.getExternalContext();



  ControllerContext controllerCtx = null;

  controllerCtx = ControllerContext.getInstance();

  String activityURL =   controllerCtx.getGlobalViewActivityURL(fctx.getViewRoot().getViewId());



  try{

    ectx.redirect(activityURL);

  } catch (IOException e) {

    //Can't redirect

    e.printStackTrace();



  }

}











References:

https://blogs.oracle.com/jdevotnharvest/entry/how_to_efficiently_redirect_an















Labels:































Comments









  1. Kailash SadwaniAugust 29, 2013 at 1:41 AM
    Hi Donovan,

    Did you get the root cause of this exception? we are facing the same issue in our code.

    Thanks,
    Kailash
    ReplyDelete
    Replies
    1. Donovan SherriffsAugust 29, 2013 at 9:03 AM
      Yes and no I stopped inside the web center code and left it because of the work around. From what I could see it is a timing issue the invalidated cache is accessed in the adf life cycle before being regenerated.

      Delete











Post a Comment



















Popular posts from this blog





















MANIFEST.MF merge JDeveloper for an executable jar




























Goto your project > properties. Then click on deployment in the menu.  Edit or add a jar deployment profile.  Fill in the details under jar options  (select Include manifest and give it a main class name)              Also remember that the merge functionality only works with a BLANK line at the end of the merge file. REALLY this caught me.     My merge file contents:       Class-Path: commons-codec-1.3.jar     [...empty line here CRLF...]  




















1 comment









Read more




























OJDeploy: Documentation for the tool




























Real DOCS:  http://docs.oracle.com/cd/E26098_01/user.1112/e17455/deploying_apps.htm#OJDUG645     OJDeploy Documentation if you run it from the command line - I keep looking for this so I though I would post it here so I remeber.       Oracle JDeveloper Deploy 11.1.2.1.0.6081   Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.     Usage:     ojdeploy -profile <name> -workspace <jws> [ -project <name> ] [ <options> ]     ojdeploy -buildfile <ojbuild.xml> [ <options> ]     ojdeploy -buildfileschema     Arguments:     -profile               the name of the Profile to deploy     -workspace      full path to the JDeveloper Workspace file(.jws)     -project              name of the JDeveloper Project within the .jws where the Profile can be...




















4 comments









Read more




























JBO-25013: TooManyObjectsException




























oracle.jbo.TooManyObjectsException: JBO-25013: Too many objects match the primary key oracle.jbo.Key[Key null ].   Ok so for you it may be trying to insert a duplicate record this should explain your problem (also check trigger they could be the cause.)   NOTE:  You can also try to create a new duplicate EO if you have a page with two VO's using the same EO. This could sort your problems.   For me I needed to add a launch listener on my LOV and clear the cache of my vo.   LOV  <af:inputListOfValues id="NameId"   popupTitle="#{bindings.Name.hints.label}"   value="#{bindings.RolName1.inputValue}"   label="#{bindings.RolName1.hints.label}"   model="#{bindings.RolName1.listOfValuesModel}"   required="#{bindings.RolName1.hints.mandatory}"   columns="#{bindings.RolName1.hints.displayWidth}"   shortDesc="#{bindings.RolName1.hints.tooltip}"   launchPopupListener="#{backingBeanScope.backingBean.launchPop...




















Post a Comment









Read more