No backing file methods in dropdown

I am working through the <b>Establishing Interportlet Communications by Using Custom and Page Flow Event Handlers: An Example</b>http://edocs.bea.com/wlp/docs81/ipcguide/custevent.html#999127
I have created my backing files in step2 and have completed much of step 3. However, when I get to the point in the tutorial where I am to choose the backing file method, there is nothing in the dropdown. The backing files have been compiled and the classes are in WEB-INF/classes/backing folder.
Any ideas what might be causing this?

Stephen Davidson wrote:
I am working through the <b>Establishing Interportlet Communications by Using Custom and Page Flow Event Handlers: An Example</b>http://edocs.bea.com/wlp/docs81/ipcguide/custevent.html#999127
I have created my backing files in step2 and have completed much of step 3. However, when I get to the point in the tutorial where I am to choose the backing file method, there is nothing in the dropdown. The backing files have been compiled and the classes are in WEB-INF/classes/backing folder.
Any ideas what might be causing this?I think that you just point to the backing file and not a method
specifically. If you override the preRender method, it always gets
executed prior to rendering whatever resource (desktop, book, page or
portlet you have it bound to) and if you override the handlePostBack
method, it gets executed whenenever you do post back to the portal.

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No Backing File in Portlet

Hi All,
Is there any possibility of not having a backing file when we are implementing the IPC (Inter-Portlet Communication) in our portal application ??
Thanks in Advance
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Hello,
A backing file is not needed unless you want to do something "custom" with the events your portlet receives. All the options listed at http://edocs.bea.com/wlp/docs102/portlets/ipc.html#wp1055503 can be specified in your .portlet file, and only "invoke backing file method" actually requires a backing file.
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http://bs2000.fujitsu-siemens.com/download/Goodies/SMAWPlus/SMAWPldb4/html/ref/am_conf/re_source.html
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Hi Soudi,
I have not tried this myself but I did find a reference to someone else who did and you may find this useful:
http://tinyurl.com/ycr367
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Backing file init method always called for proxy portlets

Hello,
We are currently using Weblogic Portal 10 MP1. Deployed within our Portal EAR is a local proxy portlet and attached to this proxy portlet is a backing file, which currently implements the init() and prerender() methods from the backing interface.
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JDeveloper 12c
I have a table and a button on the page. When user selects certain table row I want to enable/disable the button.
My backing bean (which has backing bean scope in the task flow where the page is) is
package view.backing;
public class Studybrowse {
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Timo:
I changed my backing bean method like this:
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and the button disabled property like this:
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Still same problem in design time there is a warning and 500 error in runtime.
<Jan 22, 2014 11:36:15 AM CST> <Warning> <oracle.adf.view.rich.component.fragment.UIXRegion> <ADF_FACES-00009> <Error processing viewId: /studyBrowse URI: /studyBrowse.jsf actual-URI: null.
javax.el.PropertyNotFoundException: //C:/Documents and Settings/rade/Application Data/JDeveloper/system12.1.2.0.40.66.68/o.j2ee/drs/ADFOracleReports/ViewControllerWebApp.war/studyBrowse.jsff @41,46 disabled="#{backingBeanScope.Studybrowse.isUserAuthorized}": The class 'view.backing.Studybrowse' does not have the property 'isUserAuthorized'.
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at oracle.adfinternal.view.faces.renderkit.rich.PanelGroupLayoutRenderer$EncoderCallback.processComponent(PanelGroupLayoutRenderer.java:761)
at oracle.adfinternal.view.faces.renderkit.rich.PanelGroupLayoutRenderer$EncoderCallback.processComponent(PanelGroupLayoutRenderer.java:653)
at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:195)
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at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:511)
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at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:511)
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at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:478)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:303)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:208)
at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:137)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:460)
at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:120)
at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:217)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:81)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:225)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3367)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3333)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
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at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2146)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2124)
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at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:254)
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>
<Jan 22, 2014 11:36:15 AM CST> <Error> <javax.enterprise.resource.webcontainer.jsf.application> <BEA-000000> <Error Rendering View[/studyBrowse]
javax.el.PropertyNotFoundException: //C:/Documents and Settings/rade/Application Data/JDeveloper/system12.1.2.0.40.66.68/o.j2ee/drs/ADFOracleReports/ViewControllerWebApp.war/studyBrowse.jsff @41,46 disabled="#{backingBeanScope.Studybrowse.isUserAuthorized}": The class 'view.backing.Studybrowse' does not have the property 'isUserAuthorized'.
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111)
at org.apache.myfaces.trinidad.bean.FacesBeanImpl.getProperty(FacesBeanImpl.java:73)
at oracle.adfinternal.view.faces.renderkit.rich.ButtonRenderer.getDisabled(ButtonRenderer.java:436)
at oracle.adfinternal.view.faces.renderkit.rich.ButtonRenderer.encodeAll(ButtonRenderer.java:270)
at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1578)
Truncated. see log file for complete stacktrace
>

Changing shell, look & feel dynamically in desktop backing file

(I apologize if this post is showing up twice - I tried posting with
google groups but it doesn't appear at forums.bea.com, so I wanted to
post again using xnews to make sure it shows up.)
I have a backing file that I am using with my desktop and I need to be
able to change the shell and look & feel dynamically, based on the page
that is currently active. I am doing the following in the preRender()
method:
String newLAF = "myLookAndFeel";
String newShell = "myShell";
// here is where I would determine the appropriate LAF and shell based on the current page
customizationContext = new CustomizationContext(Locale.getDefault(), request);
customizationContext.setVisitorMode(true);
DesktopView desktopView =
PortalBeanManager.getPortalCustomizationManager().getDesktopView(customizationContext, webAppName, new PortalPath(portalPath), new DesktopPath(desktopPath));
DesktopInstanceId dii = desktopView.getDesktopInstanceId();
DesktopInstance di = PortalBeanManager.getPortalCustomizationManager().getDesktopInstance(customizationContext, dii);
LookAndFeelDefinitionId lookAndFeelId = null;
for(int i = 0, n = lookAndFeelDefinitions.length; i < n; i++) {
if(newLAF.equals(lookAndFeelDefinitions.getDefinitionLabel())) {
lookAndFeelId = lookAndFeelDefinitions[i].getLookAndFeelDefinitionId();
break;
di.setLookAndFeelDefinitionId(lookAndFeelId);
ShellDefinitionManager shellManager = PortalBeanManager.getShellDefinitionManager();
ShellDefinitionId shellId = null;
ShellDefinition[] shellDefinitions = getShellDefinitions(webAppName, request.getLocale(), request);
for(int i = 0, n = shellDefinitions.length; i < n; i++) {
String shellName = shellManager.getShellView(customizationContext, shellDefinitions[i].getShellDefinitionId()).getMarkupView().getMarkupDefinition().getName();
if(newShell.equals(shellName)) {
shellId = shellDefinitions[i].getShellDefinitionId();
break;
di.setShellDefinitionId(shellId);
PortalBeanManager.getPortalCustomizationManager().updateDesktopInstance(customizationContext, di);
This works just fine, but I once the portal renders itself in my
browser, I usually have to refresh the page before the changes to the
shell and look & feel are visible. I would like to do this in the
init() method of the backing file but I do not know how to determine
the current active page from within init.
I would appreciate any help you all could give me in finding a solution
so I do not have to refresh the page in order to see the shell and look
& feel changes. Thanks in advance!
Andy

We essentially have 2 "portals" running inside 1 .portal file. We'd
like to be able to use single sign on and entitlements to allow/restrict
access to various parts of the 2 portals (where certain books are
consider part of portal "A" and others part of portal "B"). If you are
logged in as a super-user, you will be able to access everything. If
you are logged in as user type "A" you can only access portal "A," and
similarly for user type "B" and portal "B."
Portals A and B have each have a distinct header, footer (i.e. shell),
and look and feel (skeleton and skin). If a super-user is looking at
portal A, the portal should have portal A's header, footer, and look and
feel, and similarly for portal B.
How would you recommend we accomplish this? Would it make more sense
(and is it possible) to have the header and footer jsps determine what
content to render based on the current book or page, and then use the
code you suggested below to change the look and feel dynamically?
Thanks,
Andy
jolleyc wrote:
in order to pick up the changes for that request you will need to do a redirect back to the server (our login examples shwo you how to do this). this is because the control tree has already been retrieved from the database (so you need to go back and get a new version).
I quick note: If you plan on doing this a lot this is quite a heavy process. if you just need to change the lookAndFeel on the fly you can look at the following ( i t think this is in the tutorial portal)
A) Modify the shell to include a jsp and backing file
<netuix:header>
<netuix:jspContent backingFile="com.acme.DynamicLookAndFeelHeaderBacking" contentUri="/portlets/lookAndFeel/dynamicLookAndFeelHeader/dynamicLookAndFeelHeader.jsp"/>
</netuix:header>
B) backing file looks like
public void init(HttpServletRequest request, HttpServletResponse response)
// Get the session from the request
HttpSession session = request.getSession();
// Get the LookAndFeel object from the PrimaryTheme in the request
LookAndFeel lookAndFeel = LookAndFeel.getLookAndFeel(request);
if (request.getParameter("defaultButton") != null)
session.setAttribute("skin", "default");
if (request.getParameter("textButton") != null)
session.setAttribute("skin", "text");
if (request.getParameter("classicButton") != null)
session.setAttribute("skin", "classic");
String selectedSkin = (String) session.getAttribute("skin");
if (selectedSkin != null)
lookAndFeel.setSkin(selectedSkin);
lookAndFeel.setSkeleton(selectedSkin);
lookAndFeel.reinit();

How to receive the custom event in the listening portlet (No backing file)

I have couple of portlets (JPF based). Portlet A is firing an event
     public Forward processAction()
          PortletBackingContext context =PortletBackingContext.getPortletBackingContext(this.getRequest());
          String message = "XXXXX";
          context.fireCustomEvent("customevent", message);
          Forward forward = new Forward("success");
          return forward;
I have configured the Portlet B's eventhandler to listen for the 'customEvent' and invoke the pageFlowAction 'listenForEvent'
     @Jpf.Action(forwards = { @Jpf.Forward(name = "success", path = "test2.jsp") })
     public Forward listenForEvent() {
          Forward forward = new Forward("success");
          return forward;
Portlet B's method listenForEvent is indeed getting invoked, but is there a way I can retrieve the 'Event' object (as fired by Portlet A) inside the listenForEvent. I could have done this via the Backing file, but for some reasons i cann't use the backing file. Is there a way i can get the CustomEvent and the associated payload in my listening JPF portlet, without a backing file?
The WLP version is 10.3

Hello,
I originally said:
All you should need to do is to modify the method signature for your event-receiving method. The method signature should be:
public void listenforEvent(HttpServletRequest request, HttpServletResponse response, Event event)
where Event is a com.bea.netuix.events.Event object. You can then cast this to a CustomEvent object.
But I mis-read your earlier post about catching the custom event and invoking a pageflow action. When you do that, you will lose the custom event's payload (your message), and there is no way to retrieve it from your pageflow action.
The only way you can actually retrieve the event's payload is using a backing file for the portlet, with a method having the signature I mentioned above. You can then set a request attribute with the event's payload and still have it invoke the pageflow action, at which time you could retrieve the request attribute value-- assuming you don't need to run this portlet over WSRP. Over WSRP, the event-handling and pageflow action-invoking lifecycles will happen with independent request objects, so you would need to store the event payload in session to work over WSRP.
Kevin
Edited by: kfrender on Aug 31, 2009 3:34 PM

Backing file question

Very basic question
I have three page --page 1 , page2 and page 3
I have attached the below backing file to page2
The println statement always says curPage to be page2 even when I click other pages (page1 and page3) I;m not clear why backing file is executed when page 1 and page 3 is clicked. any pointers?
package age;
import com.bea.netuix.servlets.controls.page.PageBackingContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class testPageBackingFile extends com.bea.netuix.servlets.controls.content.backing.AbstractJspBacking
public boolean handlePostbackData(HttpServletRequest request, HttpServletResponse response) {
PageBackingContext testContext = PageBackingContext.getPageBackingContext(request);
String curPage = testContext.getLabel();
system.out.println("curPage" + curPage);
String newPage;
try {
Integer.parseInt(request.getParameter("age"));
newPage = "page5";
} catch (NumberFormatException nfe) {
newPage = "page2";
if(!curPage.equals(newPage)) {
testContext.setupPageChangeEvent(newPage);
return true;
} else {
return false;
}

Hello,
Unless "Control Tree Optimization" is turned on, the handlePostbackData() method of every backing file in the whole desktop will generally be run, even if the page / book / portal the backing file is attached to is not being displayed.
Kevin

Backing file at Page level

Hi,
I am working on Weblogic portal 9.2. I have single Portal that hold one page and 3 portlet.
Conditionally I wanted to visible and hide these portlet so I added backing file at Page level and after using setVisible() method of portlet I can hide or show these portlet.
But the problem is Portal page is not visible in portal administrator until and unless you created desktop template from existing portal web app.
But consider somebody created new page on portal administrator and added these 3 portlet.and now want to see visibility and hiding functionality of portlet. So Page level Backing file approach will be fail as this page will not have any backing file support.
So in this scenario how do I hide and show portlet without help of backing file

Hi Kevin
Just curious where exactly the BackingFile information gets stored for Pages, Books, Desktops etc in the Portal DB Schema. As per my understanding, from IDE we create .portal file. Add books/pages and portlets to the pages. We assign BackingFiles to Page/Book and portlets. When we deploy and create Desktop, this .portal file is parsed and all the information gets stored in the DB Tables. When we run portal in streamline mode, it gets all the details from the DB tables and NOT from the .portal file any more. In PF_PORTLET_DEFINITION Table, I could see a column to store the BackingFile full path. And in .EAR file we have this .class file. But in PF_PAGE_DEFINITION, PF_BOOK_DEFINITION, I could not see any such columns. So my question is in streamline mode when a desktop is rendered by reading all these tables, where exactly the BackingFile is getting triggered/called from which table. Does it still refer .portal file.
Thanks
Ravi Jegga

Backing file???

Hi,
Is their any place where i can found more detailed documentation of the "Backing
File"? Specifically the significance of the methods of the Backing file.
I know that the backing file is called before the JSP is called but in my case
the method "isRequestTargeted(request)" always returns false when i tried using
the backing file from the Portlet tutorial (portlet/login/LoginBacking.java).
When is the "handlePostbackData" method called? Why is it called more than once?
My JSP has 2 fields username and password.
Any help/info will be appreciated.
Raghu

Correction:
Put the class name for the Backing File:
backing.test
So, the class name is test and the filename is test.java. However, it is recommended that uppercase letter should be used for a class name. Like it should be Test.java instead.
I hope this makes sense.
Mansoor

Portlet state in backing file

I need to check whether the portlet is minimized in the portlet's backing file's
preRender() method.
Does anybody know if i can find the current mode (minimized, maximized, normal)
of the portlet somehow? From the javadocs it looks like i need to get a reference
to a PortletState object....
Thanks,
Oyvind

How about something like the following?
PortletBackingContext aContext =
PortletBackingContext.getPortletBackingContext(
aRequest
sLogger.info("current window state is: \t" +
aContext.getWindowState().getName());
"Oyvind Johansen" <[email protected]> wrote in message
news:40617642$[email protected]..
>
I need to check whether the portlet is minimized in the portlet's backingfile's
preRender() method.
Does anybody know if i can find the current mode (minimized, maximized,normal)
of the portlet somehow? From the javadocs it looks like i need to get areference
to a PortletState object....
Thanks,
Oyvind

Changing current page from backing file

Using WL 8.1 SP4
I have a User Acceptance Policy page in my portal, and I want to ensure that users have viewed this page before I allow them to view any other content.
When users have viewed the UAP, I set a session variable. I then use the session variable in my entitlements, so there's no problem with them viewing content they shouldn't.
The problem I have is that if users try to access a page directly (or their session has expired), they're left with a blank page (as they're not entitled to see anything), rather than being sent to something helpful (i.e. the UAP).
So I need a backing file. It can either be on every page (except the UAP), or I can put it on the book - whatever is recommended.
I've tried this as a page backing file:
public class UAPCheck extends AbstractJspBacking {
public boolean handlePostbackData(HttpServletRequest request, HttpServletResponse response){
PageBackingContext pbc = PageBackingContext.getPageBackingContext(request);
if (pbc.getLabel().equals("uap_page")
|| request.getSession().getAttribute("UAP Accepted") != null){
return true;
} else {
pbc.setupPageChangeEvent("uap_page");
return true;
I've applied this to pages in my book, however nothing happens - the page change request never fires!
So what's happening here? Am I misunderstanding what setupPageChangeEvent is for?
Help is appreciated.
darren

In the past I have done it as follows:
1. Create a backing file for the book that has these pages.
2. In the preRender of the backing file do the following
BookBackingContext bbc=
BookBackingContext.getBookBackingContext(getRequest());
if( //check to see if page change event is needed)
{PageBackingContext pbc_current =
        bbc.getActivePageBackingContext();
    pbc_default.setActive(false);
    PageBackingContext pbc_pageToBeShown=
        bbc.getPageBackingContextByDefinitionLabel("//
        def label of page to be shown, in your
        case 'uap_page'");
    pbc_pageToBeShown.setActive(true);
    return true;
else return true;
3. link the backing file to book
Recommendations:
* Don't use backing files for Portal components if they are not needed. (From your post, if I am not wrong, you are using backing files for all pages in the book which is not necessary and can cause unnecessary complications)
* Read this doc to understand life-cycle methods of portal components http://edocs.bea.com/wlp/docs81/pdf/taxonomy.pdf
Peruse the above document to understand what is going wrong with your code.
* Remember that the life cycle methods for components that are not active will not be rendered if treeOptimizationEnable parameter is set to true ( this parameter can be seen in workshop under property editor)
* When calling one of the setupxxevent methods, it must be done on the backing context that the backing file is tied to. If you do not do this the event may not get fired. For more info click http://e-docs.bea.com/wlp/docs81/whitepapers/netix/body.html
Seenu
Seenu.

Setting Portlet Preference in Backing File for Clipper Portlet

Hi All,
I have a clipper portlet, and I am setting the preferences(for form based authentication & passing application data dynamically) in the backing file which is then associated to the Clipper portlet. I looked up at the clipper constants that are available; and the example they have given is
portlet.setPreference(LOGIN_FORM_EXTRA_PARAMS, "name1=value2&name3=value4")
My question is what is this "portlet"?? is it an instance?? then whose instance/object it is?? how am I suppose to declare it in my Backing File??
Any input on this would be appreciated.
Thanks,
G

Hi,
I'm guessing here... but I think that the example is referring to a PortletPreferences object, which can be obtained through a PortletBackingContext with the getPortletPreferences() method. To obtain a PortletBackingContext you just use the static method PortletBackingContext.getPortletBackingContext() and pass in the request in the backing file. See also: Using the Preferences API to Access or Modify Preferences
Hope this helps,
Petri

Prerender() in backing file... setting desktop titles dynamically

I have a link in page1 (with pageflow1 and portlet1), clicking on which the user is taken to page2 (with pageflow2 and portlet2) and the begin action method gets called in pageflow2. The begin action forwards to another another action (say, action2). action2 sets some request attributes, then finally forwards to the JSP that needs to be rendered. I have a backing file for portlet2 that has the prerender method implemented. The prerender() checks the request attribute set in action2() and accordingly sets the desktop title.
Now my problem is, the prerender is getting called BEFORE begin action is invoked. Shouldn't the prerender get invoked just beofre the JSP is rendered? If not, then how can I set the desktop title dynamically based on some data in an action?
Thanks in advance!

There are two backing files you can give for a portlet.
1. Backing file for a portlet
2. Backing file for a JSP
Try giving the backing file reference in JSP instead of portlet.
-sampath

No backing file methods in dropdown

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