Interportlet Communication

Hi,
Have a query with regards to the following.
Appreciate if anyone could advise or correct my understanding:
For the current project implementation, there are the following portlets from various vendors, using various implementations:
1) A main portal, with a login portlet implemented using BEA workshop (BeeHive Apache NETUI)
2) a shopping portlet (product A) implemented using MVC
3) a checkout portlet (product B) implemented using JSR 168
A typical user process will be to login, shop and checkout as in the above order.
The 3 portlets above will need to communicate with each other.
(a) Interportlet communication
BEA allows these methods:
(i) event handlers
(ii) backing files
(iii) refresh?
Question 1: Are the above methods vendor-specific to BEA only?
Note: Assume all 3 portlets are deployed locally, i.e. with not as remote portlets.
Question 2: If yes, how can the login portlet "talk" to the other 2 portlets?
Given that checkout portlet is implemented using JSR 168, does this mean portlet session is the only way of sharing information?
Question 3: Can event handlers be used for IPC for this scenario, since its the most recommended way by BEA to implement this.
Understand event handlers are defined in .portlet file. Is this correct?
Question 4: Can both shopping and checkout portlet be "imported" to Workshop for development?
Will both of them have .portlet file? If yes, then I would think event handler method can be used?
Appreciate any advice or feedback.
Thanks.

BEA Weblogic Portal 9/10 i m using....
I have wriiten the code to hide the page using PageBackingContext....
PageBackingContext pbc = PageBackingContext.getPageBackingContext(getRequest());
pbc.setvisible(false);

Similar Messages

How to do interportlet communication in JSR 286 Portlet

HI,
We are using webcentre portlet producer appliaction and creating JSr 286 portlets. Using Jdeveloper 11.1.8.1 .
Now we have two portlets one is search and another is search result.
After the seacrh is clicked DAO should get called and search result should get refreshed with the search result.
PLease let me know how can we do this ?
Thanx in Advance.

Hi ,
You can refer below links to achieve interportlet communication.
Inter Portlet Communication with ADF portlets | Yannick Ongena's WebCenter And Enterprise 2.0 Blog
https://www.youtube.com/watch?v=NI2Zy6gRfF4
Thanks

Interportlet Communication Issue - Help!!

We are in the process of converting our site to 8.1 and have bumped into a problem
with the interportlet communication. We have two portlets on a page that need
to listen to each other (a Shopping Cart portlet and a Shopping Content portlet).
We have specified on each portlet that it listen to the other and while that
does fire the corresponding action on both portlets, it always fires portlet A
before portlet B, even when we take an action on portlet B.
It seems strange to me that in a listening portlet situation, it will always fire
one before the other, regardless of where the action was taken.
Any help that can be provided would be greatly appreciated!
Thanks.

Hi Paul,
I had issues with the inter-portlet communication also. From my understanding
both portlets are listening to the same outer request. For example in the begin
action method of Portlet_2 I have:
HttpServletRequest outerrequest = ScopedServletUtils.getOuterRequest(getRequest());
String param1 = outerrequest.getParameter("param1");
if (param1.equals("some_value"))
// do something
In the JSP of my portlet_1 I have the following:
<% HttpServletRequest outerrequest =
ScopedServletUtils.getOuterRequest(request);
String actionURLB = outerrequest.getRequestURI() + "?";
%>
<a href="<%=actionURLB%>param1=1 ">Do First</a>
<a href="<%=actionURLB%>param1=2 ">Do Second</a>
I don't have the Portlet_1 listening to the outer request. You may want to also
look at the example in the examples provided from BEA which kind of helped me.
However, I had problems incorporating their code that they provided even though
they work well in the BEA examples.
Mansoor
"Paul Merrigan" <[email protected]> wrote:
>
We are in the process of converting our site to 8.1 and have bumped into
a problem
with the interportlet communication. We have two portlets on a page
that need
to listen to each other (a Shopping Cart portlet and a Shopping Content
portlet).
We have specified on each portlet that it listen to the other and while
that
does fire the corresponding action on both portlets, it always fires
portlet A
before portlet B, even when we take an action on portlet B.
It seems strange to me that in a listening portlet situation, it will
always fire
one before the other, regardless of where the action was taken.
Any help that can be provided would be greatly appreciated!
Thanks.

Interportlet communication using JSR 168

Hi All
We are using JSR 168 portlets . My requirement is invoke the method of Portlet B on some event of Portlet A.
I need help on the implementation of Interportlet communication using JSR 168
Thanks

Hi,
Go through the below two discussions
Interportlet communication using JSR 168
Re: JSR 168 Portlets -- IPC with Custom Events
Thanks,
Venkat Sarvabatla

Problem in InterPortlet Communication

hello
I read about the WebLogic Portal IPC(Inter Portlet Comm) Model. I tried to develop the sample IPC portlets in WebLogic Portal SP4, i faced some problems.
In the event handler dialog box, under the event actions list only thsese ver listed
change window mode
change window state
activate page
fire generic event
fire custom event
There was no "Invoke backingfile method" event listed.
Has any1 suceesfully implemented IPC ??
Thnks,
Chhimi

Prashant S wrote:
UPS NAME:--> Smart-UPS RT 2000 RM XL
i need all events
and bad msg.
here is the attachment of that particular MIB. extension change MIB to xls.pls after downloading this file change it into MIB.
Can i get all traps including generic Trap.
Can u send me updated trap vi.
also can u tell me that how can i import the MIB file .
there is any Particular vi for this operation.
Prashan! You do realize that Mark has put up his SNMP library up for free use? If this library was part of the Internet Toolkit or some other NI Toolkit it would not be free, nowadays most likely password protected at least on library level, and you could at best put in an feature request and hope it is added in a few years.
If I was Mark I would feel your request to him to change it to suit your specific requirements all for free to be rather rude. Read the specs, understand how network communication works and make the few modifications to his library yourself! And then post the improvements so that others can benefit too! Once you have done that you will be able to make even more changes and also have improved your knowledge to be an even better engineer.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Interportlet communication JSR 168

I have two JSR portlets that use jsp files in their doView() methods. One portlet is menu and the other
portlet performs some action in response to selection in menu portlet.
My idea was to do the following menu.jsp for MyMenu portlet:
<%@ page import="some.package.MyMenuPortlet"%>
<%@ taglib uri="netui-tags-html.tld" prefix="netui"%>
<%@ taglib uri="http://java.sun.com/portlet" prefix="portlet"%>
<%@ taglib uri="http://www.bea.com/servers/portal/tags/netuix/render" prefix="render"%>
Menu:
<render:windowUrl var="windowUrl">
<render:param name="SELECTION" value="SOME_SELECTION_VALUE"/>
</render:windowUrl>
<netui:anchor href="<%=windowUrl%>"></netui:anchor> 
This creates a one option menu with a href identical to the calling http request with addition of
SELECTION parameter at the end.
As a next step I wanted to do follwoing doView() method in secon portlet.
public void doView(RenderRequest request, RenderResponse response) throws PortletException, IOException
response.setContentType("text/html");
String menuSelectionValue = request.getParameter("SELECTION");
if (menuSelectionValue == "SOME_SELECTION_VALUE")
/* do something regardind thin selection */
The proble is that request.getParameter("SELECTION") returns null. I think it takes parameters only from
context of portlet whom the doView() we are in.
Is there any way to retrieve parameter from http request?
Or is there any other way to compose request in a MyMenu.jsp? <portlet:renderURL> doesn´t work either.
It is visible only in MYMenuPortlet.doView() and not in MyOtherPortlet.doView(). Clearly a portlet scope
issue.
Is there any way to do this?
Another option is to use <portlet:actionURL> which would invoke MyMenuPortlet.processAction(). I could
then store selection value in user session (APPLICATION_SCOPE) and this would then be visible to my
other portlet.
Any suggestions?
Thanx

You have the following alternatives...
Sure, the portlet session with APPLICATION_SCOPE
Or,
you can get the HttpServletRequest from the request like the following:
request.getAttribute("javax.servlet.request");
I have two JSR portlets that use jsp files in their
doView() methods. One portlet is menu and the other
portlet performs some action in response to selection
in menu portlet.
My idea was to do the following menu.jsp for MyMenu
portlet:
<%@ page import="some.package.MyMenuPortlet"%>
<%@ taglib uri="netui-tags-html.tld"
prefix="netui"%>
<%@ taglib uri="http://java.sun.com/portlet"
prefix="portlet"%>
<%@ taglib
uri="http://www.bea.com/servers/portal/tags/netuix/ren
der" prefix="render"%>
Menu:
<render:windowUrl var="windowUrl">
<render:param name="SELECTION"
ION" value="SOME_SELECTION_VALUE"/>
</render:windowUrl>
<netui:anchor
href="<%=windowUrl%>"></netui:anchor> 
This creates a one option menu with a href identical
to the calling http request with addition of
SELECTION parameter at the end.
As a next step I wanted to do follwoing doView()
method in secon portlet.
public void doView(RenderRequest request,
RenderResponse response) throws PortletException,
IOException
response.setContentType("text/html");
String menuSelectionValue =
e = request.getParameter("SELECTION");
if (menuSelectionValue == "SOME_SELECTION_VALUE")
/* do something regardind thin selection */
The proble is that request.getParameter("SELECTION")
returns null. I think it takes parameters only from
context of portlet whom the doView() we are in.
Is there any way to retrieve parameter from http
request?
Or is there any other way to compose request in a
MyMenu.jsp? <portlet:renderURL> doesn´t work either.
It is visible only in MYMenuPortlet.doView() and not
in MyOtherPortlet.doView(). Clearly a portlet scope
issue.
Is there any way to do this?
Another option is to use <portlet:actionURL> which
would invoke MyMenuPortlet.processAction(). I could
then store selection value in user session
(APPLICATION_SCOPE) and this would then be visible to
my
other portlet.
Any suggestions?
Thanx

Portlet communication problem

hello
i am pretty new to portlets
the problem is that
i want that i dispaly a list of record in one portlet and if user click on that record then on the next protlet this record is shown.
this require two portlets
i followed a lot of links but i dnt get clear understaning about the functions and ipc ie when is processAction() called and when is doedit called etc etc
can any one give complete example or links or help me how to do tht
i am working with jsf.

It seems you are trying Inter Portlet Communication for JSF Portlets. Check this article : http://developers.sun.com/portalserver/reference/techart/ipc.html . This describes InterPortlet Communication that was added as an extension to JSR 168(implemented in OpenPortal Portlet Container 1.0_02).
Regards,
Deepak

Inter portlet communication, load order, portal server 7

Hi.
I�m struggling with a portlet application, which uses interportlet communication. PortletOne creates an ArrayList of objects and add the list to the portletSession. PortletTwo displays the first object in the ArrayList.
The trouble seams to be the load order of the portlets. If portletTwo loads before PortletOne, the ArrayList is empty, and it displays nothing.
Any idea how I can be sure that my page loads PortletOne before PortletTwo?

If your intention is to transfer data(Array List of Objects) from from one portlet to the other, you need to use InterPortlet Communication API rather than putting the data in the session. In the first portlet set the event data and fire the event and in the second portlet, get the event data.
The order in which the events are fired is not guaranteed. i.e if portlet fires an event to portlet1, portlet2 and portlet3, the order in which the portlet1, 2 & 3 will receive the events is not guaranteed. Load order of portlets does not cause any problems.

Portlets Communication

Hi,
I am basically trying to pass data between two portlets. I have Portlet_A and when a hyperlink is clicked in portlet_A, I want to pass some data (String) to portlet_B and have porltet_B update in real time. Both portlets are part of the same page and are visibile at the same time.
I am using WL10.
I am not sure how would I do that. I read through some posts here in this forum but still confused.!
Any help would be greatly appreciated !

There are two approaches:
1) send the data in request when u click the hyper link portlet_A, and let the other portlet portlet_B check if it find that data in request then it will process it.
2) Use the inter-portlet communication (BEA recommended method). I do not know the URL for WLP10 for inter-portlet communication, but i think it should be same as 8.1.
http://e-docs.bea.com/workshop/docs81/doc/en/core/index.html
search for "How Do I: Establish Interportlet Communications".
Hope it will help.
Thanks

Linking between tabs

Hi,
Sorry if I'm repeating a prior post. I have searched but
can't find the answer I'm looking for.
It's pretty simple. How do I link between tabs on the same
Index page? My entire site is basically just the index page with
many tabs on it. How do I (hyper)link between tabs? Say from:
Index\Tab01\SubtabB to Index\Tab02\SubtabA.
My site is here
www.praiadecima.com
Thanks

Hello everybody.
It seems that it's not possible to link analytics between tabs, at least based on this official SAP response:
Based on the case description I have further investigated on your requirement and would like to inform you that in Interportlet Communication its not currently possible between tabs because we treat each tab as a seperate dashboard.
So I have to redesign my dashboards layout.
Thanks to all.

Announcing: Developing JSF Portlets with WebLogic Portal Whitepaper

Just Released: Developing JSF Portlets with WebLogic Portal Whitepaper
A supplemental developer's guide has been published to help guide WLP 10.x customers that wish to use JSF as the web framework for building portlets on WebLogic Portal. This is a sizable document (150 pages) that covers a large number of topics. It also coaches developers on best practices and common pitfalls.
Important: It also clarifies the supported configuration of JSF within Portal Web Projects. Workshop for WebLogic by default configures a web project in a configuration that is not supported by WebLogic Portal. The guide explains how to address this:
* Change from the unsupported MyFaces JSF implementation to the supported Sun Reference Implementation (RI)
* Change from the unsupported "client" STATE_SAVING_METHOD to the supported "server"
The guide can be downloaded here:
http://download.oracle.com/technology/products/weblogic/portal/weblogic-portal-jsf-whitepaper.pdf
To help internet searches locate this document, the table of contents is reproduced below:
Introduction
1.1. Prerequisites...................................................................... 8
1.2. Applicable Versions............................................................ 8
1.3. Native Portlet Bridges and Standard Portlet Bridges .......... 8
1.4. JSF Portlet Support Roadmap ........................................... 9
1.5. Whitepaper Structure ....................................................... 10
1.6. Look Before You Leap ..................................................... 10
1.7. For More Information........................................................ 10
Part 1: Converting JSF Applications into Portlets
2. IDE Support for JSF Portlets Chapter ...................................... 12
2.1. Workshop for WebLogic – WebLogic Portal's Supported IDE 12
2.2. Workshop Features for JSF Support in WebLogic Portal.. 12
3. Introduction to JSF Portlets Chapter ........................................ 18
3.1. Creating Your First JSF Portlet......................................... 18
3.2. Essentials of JSF Portlet Views........................................ 21
3.3. WebLogic Portal Artifacts................................................. 22
4. Configuring JSF within WebLogic Portal Chapter..................... 24
4.1. JSF Library Modules in WebLogic Server ........................ 24
4.2. Installing the JSF Libraries into a Portal Web Project ....... 25
4.3. JSF Configuration Settings............................................... 27
4.4. Configuring JSF 1.2 ......................................................... 29
4.5. Building an Unsupported JSF Implementation Library Module 31
4.6. Faces Configuration is Web Application Scoped.............. 31
5. Navigation within a JSF Portlet Chapter................................... 33
5.1. Navigating within a Portlet with the JSF Controller ........... 33
5.2. Redirects.......................................................................... 34
6. Namespacing Chapter ............................................................. 35
6.1. Namespacing Managed Bean Names.............................. 35
6.2. Client ID Namespacing with the View and Subview Components 35
6.3. Client ID Namespacing with the WLP NamingContainer .. 36
7. Logging, Iterative Development, and Debugging Chapter ........ 39
7.1. Logging............................................................................ 39
7.2. Iterative Development ...................................................... 39
7.3. Debugging ....................................................................... 40
8. Custom JavaScript Chapter ..................................................... 42
8.1. DOM Manipulation within a JSF ....................................... 42
8.2. Form Validation within a JSF Portlet ................................ 45
9. Preparing JSF Portlets for Production Chapter ........................ 46
9.1. Configuration.................................................................... 46
9.2. Performance and Scalability............................................. 47
9.3. Security............................................................................ 49
9.4. Localization...................................................................... 50
Part 2: Interacting with the Portal Environment
10. Native Bridge Architecture Chapter ...................................... 54
10.1. Container Architecture Overview.................................. 54
10.2. Container Architecture.................................................. 54
10.3. Container Interactions .................................................. 55
11. Interportlet Communication Chapter .................................... 56
11.1. Using Session and Request Attributes for IPC (Anti-pattern) 56
11.2. Using the WLP Event Facility for IPC with JSF Portlets 56
11.3. Notifications ................................................................. 60
11.4. Comparison of the IPC Approaches ............................. 60
12. Scopes Chapter ................................................................... 62
12.1. Conceptual Scopes for Standard JSF Applications ...... 62
12.2. Conceptual Scopes for Portal Applications................... 63
12.3. Implementation Patterns for Portal Scopes .................. 63
13. State Sharing Patterns Chapter ........................................... 66
13.1. State Sharing Concepts ............................................... 66
13.2. HttpSession Versus HttpServletRequest ...................... 66
13.3. Base Code for HttpSession Patterns ............................ 67
13.4. Single Portlet Pattern ................................................... 68
13.5. Multiple Portlet Patterns ............................................... 69
14. Rendering Lifecycles Chapter .............................................. 77
14.1. WLP and JSF Lifecycles .............................................. 77
14.2. Invocation Order of WLP and JSF Lifecycle Methods... 77
14.3. Accessing WLP Context Objects from JSF Managed Beans 78
15. Portal Navigation Chapter .................................................... 80
15.1. Programmatically Constructing JSF Portlet URLs ........ 80
15.2. Changing the Active Portal Page.................................. 80
15.3. Redirects within a Portal............................................... 83
16. Ajax Enablement Chapter .................................................... 85
16.1. Ajax in JSF Portlets...................................................... 85
16.2. Partial Page Rendering Pattern.................................... 85
16.3. Stateless API Request Pattern ..................................... 86
16.4. Portlet Aware API Request Pattern .............................. 87
16.5. Controlling the WLP Ajax Framework........................... 91
17. Additional WLP Features Chapter........................................ 93
17.2. Portlet Container Features ........................................... 93
17.3. Portal Container Features ............................................ 98
18. Example: Implementing a Login Portlet Chapter .................. 99
18.1. Login Portlet Motivation................................................ 99
18.2. Login Portlet Design..................................................... 99
18.3. Login Portlet Implementation...................................... 101
Part 3: Integrating Third Party Libraries
19. Integration Overview Chapter............................................. 111
19.1. Types of Libraries....................................................... 111
19.2. Roadmap for MyFaces Trinidad and ADF Faces Rich Client 111
20. Using the Facelets View Technology Chapter.................... 113
20.1. Introduction to Facelets .............................................. 113
20.2. Configuring Facelets Support ..................................... 113
21. Using the Apache MyFaces Tomahawk Component Library Chapter 115
21.1. What is Apache MyFaces Tomahawk? ...................... 115
21.2. Support for Tomahawk in WLP................................... 115
21.3. Tomahawk Component List........................................ 116
21.4. Installing and Configuring Tomahawk......................... 119
21.5. Resolving the Duplicate ID Issue................................ 120
21.6. Referring to Resources .............................................. 120
21.7. forceId Attribute.......................................................... 124
21.8. File Upload................................................................. 125
22. Using the Apache Beehive Navigation Controller Chapter . 126
22.1. Apache Beehive Page Flow ....................................... 126
22.2. JSF and Page Flows .................................................. 126
22.3. Configuring the JSF Integration with Page Flows ....... 127
Appendices
23. Appendix 1: Consolidated List of Best Practices ................ 130
24. Appendix 2: Known Issues and Workarounds.................... 132
24.1. CR383659, CR383662 Inconsistent failures with JSF portlets 132
24.2. CR342124: IllegalStateException due to duplicate client-id 132
24.3. CR384916: IllegalStateException due to duplicate client-id when using certain components such as Tomahawk and Trinidad...... 133
24.4. CR361477 Problems with the integration of JSF portlets with Apache Beehive Page Flows.................................................................. 133
24.5. CR377945 JSF 1.2 suffers from a memory leak during iterative development .............................................................................. 134
25. Appendix 3: The JSFPortletHelper Class ........................... 135
26. Appendix 4: The CleanupPhaseListener Class .................. 147

Hi Peter!
First, I wish to thank you for the great work.
We followed your whitepaper and managed to deploy a JSF portlet on WLS.
But we are not able to register it (consume it) as remote portlet in Oracle Portal 10.1.4. The error log is as follows:
An error occurred while trying to refresh the provider. (WWC-43190)
An error occurred during the call to the WSRP Provider:
java.rmi.RemoteException: serialization error: serialization error:
unexpected null value for literal data; nested exception is:
serialization error: serialization error: unexpected null value for literal data
com.sun.xml.rpc.encoding.SerializationException: serialization error:
serialization error: unexpected null value for literal data
com.sun.xml.rpc.encoding.SerializationException: serialization error:
unexpected null value for literal data
Java stack trace from root exception:
unexpected null value for literal data
at
oracle.webdb.wsrp.RegistrationContext_LiteralSerializer.doSerialize(RegistrationContext_LiteralSerializer.java:107)
at
com.sun.xml.rpc.encoding.literal.LiteralObjectSerializerBase.internalSerialize(LiteralObjectSerializerBase.java:119)
at
com.sun.xml.rpc.encoding.literal.LiteralObjectSerializerBase.serialize(LiteralObjectSerializerBase.java:70)
at
oracle.webdb.wsrp.GetServiceDescription_LiteralSerializer.doSerialize(GetServiceDescription_LiteralSerializer.java:88)
at
com.sun.xml.rpc.encoding.literal.LiteralObjectSerializerBase.internalSerialize(LiteralObjectSerializerBase.java:119)
at
com.sun.xml.rpc.encoding.literal.LiteralObjectSerializerBase.serialize(LiteralObjectSerializerBase.java:70)
at
com.sun.xml.rpc.client.StreamingSender._writeRequest(StreamingSender.java:473)
at com.sun.xml.rpc.client.StreamingSender._send(StreamingSender.java:62)
at
oracle.webdb.wsrp.WSRP_v1_ServiceDescription_PortType_Stub.getServiceDescription(WSRP_v1_ServiceDescription_PortType_Stub.java:63)
at
oracle.webdb.wsrp.client.design.v1.OraWSRP_v1_ServiceDescription_PortType.getServiceDescription(Unknown
Source)Do you have any idea why this happens? Or you can provide some useful links to WLP -Oracle Portal federation?
Thank you and best regards,
PaKo

Query- IPC using JSF Portlets in WebLogic Portal

The question is how to pass data when doing InterPortlet Communication using Local JSF portlets in Weblogic Portal.
I will eloborate on the particular scenario we have below.
Two JSF portlets are build (both are not using Java Page Flows). The first porltet has a table of data. When the user clicks on one of the items in the table (which is coded using <h:commandLink/> option), the second portlet should show some details on the item clicked.
For example:
If there is a list of books in first portlet, when clicking on one of the book name, the details of book should come up in the second portlet.
To achieve this, faces event was enabled in first portlet with requestAttrPersistence option set to session.
For example :
<netuix:content>
<netuix:facesContent contentUri="/bookList.faces" requestAttrPersistence="session">
<netuix:facesEvents>
<netuix:facesEvent action="/bookDetails.faces" eventName="bookDetailEvent"/>
</netuix:facesEvents>
</netuix:facesContent>
</netuix:content>
The second portlet was configured to handle faces events, particularly the bookDetailEvent.
Example:
<netuix:handleFacesEvent eventLabel="handleFacesEvent1" eventName="bookDetailEvent" fromSelfInstanceOnly="false" onlyIfDisplayed="true" sourceDefinitionLabels="JSFPortlet_1" sourceDefinitionWildcard="this">
<netuix:invokeFacesAction action="/bookDetails.faces"/>
</netuix:handleFacesEvent>
Going by this method, how can we find the particular book whose detail has to be shown? As in JSF, we dont directly access the request attributes, what is the ideal way to pass data from one page to other?
Please help on this.

i am also having the same problem.I tried by passing _nfls=false but it didn't work.Can you suuggest where do i need to set this or any other parametrs such as this programmatically?

No backing file methods in dropdown

I am working through the Establishing Interportlet Communications by Using Custom and Page Flow Event Handlers: An Examplehttp://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 Establishing Interportlet Communications by Using Custom and Page Flow Event Handlers: An Examplehttp://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.

Detection portlet backing file under weblogic portal

Hi all
I am try to work out a interportlet communication example under instruction listed below
http://download.oracle.com/docs/cd/E13218_01/wlp/docs92/portlets/ipc.html#wp1025202
Everything works fine until add action to a backing file. I cannot find such option under event handler wizard. From the documentation, it mentions that
"The Invoke BackingFile selection will not appear unless a backing file is detected by WebLogic Portal. "
Is any way that can trigger weblogic portal to detect particular backing file? or any example that I can refer to setup such action manually?
Any help would be apprectiate, thanks.
wayne

Hello Wayne,
The WebLogic Portal forum is a better place to ask WLP questions:
WebLogic Portal
However, to answer your question, you can add a backing file to the portlet in Workshop, or manually in the .portlet file as described (at the bottom of the section) here:
http://download.oracle.com/docs/cd/E13218_01/wlp/docs92/portlets/building.html#wp1077130
Kevin

Excel error - linking between tabs?

We recently upgraded to Essbase 6.2.2 on AIX (from 5.0.2 patch 10). All usershave the Excel Add-in on their desktops. We have a couple users who are having problems linking cells in Excel. When they hit = and then flip to another tab, Excel is highlighting multiplerandom cells. When the user tries to select the cell she wants to link and thenhits enter....nothing happens. The linked cell does not have her formula. She usually gets out of Excel and comes back in and it will work for awhile and then the strange behavior starts again.I know this is more an Excel issue, but it has only been occurring sincewe upgraded so I was curious if any one else is having this problem. Like I said, we only have 2 people experiencing this problem, but it is very frustratingfor them.Thanks,Diane

Hello everybody.
It seems that it's not possible to link analytics between tabs, at least based on this official SAP response:
Based on the case description I have further investigated on your requirement and would like to inform you that in Interportlet Communication its not currently possible between tabs because we treat each tab as a seperate dashboard.
So I have to redesign my dashboards layout.
Thanks to all.

Interportlet Communication

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