Portlet API: JSR 168 / 286 vs Vendor Extensions

Currently evaluating Websphere 5.1 vs WebLogic 8.1 Portal software.
It seems like both IBM and BEA push you towards using their Portal extensions as "value add" features. I am really interested in sticking to JSR 168 for portability.
Does anyone have any experience with these tools developing JSR 168? I would appreciate your observations about using the vendor extensions vs JSR 168 support in these tools. Please add any comments on other portal software you have had success with.
Any idea when will JSR 286 come out with final spec?
Message was edited by:
java@finance

sorry.Correction.I am using Oracle portal 10.1.4 .
-Vid-

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Online chat, Aug. 12, n the Portlet Specification (JSR 168)

The Portlet Specification, JSR 168 ( http://jcp.org/en/jsr/detail?id=168 ), establishes a standard API for creating portlets. It's designed to ensure interoperability between portlets and Java-based portal servers or other Web applications that implement the specification. Learn more about the Portlet Specification, and get questions answered in this chat with Portlet Specification co-lead Alejandro Abdelnur, and Sun ONE Portal Server product manager Adam Abramski. The chat is scheduled for Tuesday, August 12, at 11 A.M.-to-noon Pacific Daylight Time (6:00 P.M.-to-7 P.M. GMT).
To join the chat on August 12, go to http://developer.java.sun.com/developer/community/chat/index.html and click on "Join the current session".

The transcript of this chat is now available at http://developer.java.sun.com/developer/community/chat/JavaLive/2003/jl0812.html

Online Chat, Aug. 12, on the Portlet Specification (JSR 168)

The Portlet Specification, JSR 168 ( http://jcp.org/en/jsr/detail?id=168 ), establishes a standard API for creating portlets. It's designed to ensure interoperability between portlets and Java-based portal servers or other Web applications that implement the specification. Learn more about the Portlet Specification, and get questions answered in this chat with Portlet Specification co-lead Alejandro Abdelnur, and Sun ONE Portal Server product manager Adam Abramski. The chat is scheduled for Tuesday, August 12, at 11 A.M.-to-noon Pacific Daylight Time (6:00 P.M.-to-7 P.M. GMT).
To join the chat on August 12, go to http://developer.java.sun.com/developer/community/chat/index.html and click on "Join the current session".

The transcript for the chat is now available at http://developer.java.sun.com/developer/community/chat/JavaLive/2003/jl0812.html

Integration between portlets using JSR 168

I've developed 3 portlets but I want them talking with each other, in a way that is JSR 168 compliant.
For example, I have a search box portlet, where the user can only type search expressions, a search result portlet, where the user will see search results, and a search summary portlet, where the user will see statistics about search.
First question: how can I send data from one portlet to another? Is HttpSession a safe place to share data between portlets? Can I trust that all containers will create a single HttpSession per user?
Second question: how can one portlet force refresh of another, or even hide or show up another portlet?

Well it is a very smart question..
To be more precise i don't think it is been properly answered with
JSR 168 specification.
However,there few best practises followed in order to achieve it.
The idea of using HttpSession (PortletSession.getHttpSession() with Usage of AJAX) as you said it certainly one of the things which evryone would think.
http://www.ibm.com/developerworks/websphere/library/techarticles/0604_scott/0604_scott.html
http://www.doc.ic.ac.uk/~mo197/portlets/portlet_messaging/
http://wiki.java.net/bin/view/Portlet/JSR168FAQ(checkout the last part of the document)
http://www.michaelgilfix.com/techblog/2007/01/27/ajax-and-portlets
http://www.theserverside.com/news/thread.tss?thread_id=35385
http://blogs.jboss.com/blog/jviet/2005/07/14/The_recurring_interportlet_communication_dilemna.txt
http://portlets.blogspot.com/2005/07/inter-portlet-communication-library.html
http://docs.sun.com/app/docs/doc/819-5942/6n807tpc2?a=view
http://www.oracle.com/technology/products/ias/portal/pdf/oow06_S281756_jsr168ajax.pdf
http://docs.jboss.org/jbportal/v2.2/reference-guide/en/html/ipc.html#d0e1308
However,SUN is trying to revise it in their next specification JSR 286.
http://jcp.org/en/jsr/detail?id=286,
http://blogs.sun.com/nav/entry/understanding_portlet_2_0_jsr1,
http://apachecon.com/2006/US/presentations/FR8/FR8-JSR-286-updated.pdf
Second Question:how can one portlet force refresh >of another, or even hide or show up another portlet?As discussed earlier Usage of AJAX / (And storing Common Credentials in a Bean which scoped to HttpSession) in the dependent portlet would be quite handy in the above discussed case.
Hope this might help :)
REGARDS,
RaHuL

Java Portlets only JSR 168 compatible Portlet in Weblogic Portal 9.x?

I and need to develop a JSR 168 Portlet that contains JSF components. I have looked through a lot of the training material, newsgroups and web sites for any information on how to perform this within the Weblogic Portal tools and have been unsuccessful.
Is there a way in Weblogic Portal 9.x to create a Portlet that is JSR 168 compliant and capable of containing JSF components through the tool interface?

I and need to develop a JSR 168 Portlet that contains JSF components. I have looked through a lot of the training material, newsgroups and web sites for any information on how to perform this within the Weblogic Portal tools and have been unsuccessful.
Is there a way in Weblogic Portal 9.x to create a Portlet that is JSR 168 compliant and capable of containing JSF components through the tool interface?

JSR 168 portlets

Hi,
Once again I find myself struggling to keep on top of the bleeding edge of Portal technology - I remember developing PL/SQL portlets in WebDB 3.0 Beta when there was no documentation not too many years ago!
I am working with a client that wants to make some "legacy" PL/SQL portlet applications portable to SAP Portal. SAP NetWeaver support for JSR 168 is planned in the near future, and the client wants to be able to publish the portlets there. The existing applications are deployed in Oracle Portal and consist of 30 PL/SQL, along with a few bits of custom java / servlet functionality for file upload and download. Some of these portlets have very complex functionality both clientside (javascript) and serverside (SQL).
Am I correct in assuming that these will have to be redeveloped as JSR 168-compliant JSP portlets...?
From what I can gather there shouldn't be too many restrictions, but I was wondering if anyone else has gone through or is going through this kind of process and/or has any tips or suggestions?
Thanks for your assistance,
Mark Austin

Hi,
Yes. You should convert these portlets to jsr 168 portlets. But there is no tool available in Oracle Portal to convert these portlets to jsr 168 portlets.
Thanks,
Sharmila

Use JSF with Portlet JSR 168 Specification

Hi
I need to know.... is possible run JSF application with Portlet Specification JSR 168, using Pluto Portal and Apache Tomcat ???
Best Regards
Mauricio

Hi,
the Apache Jetspeed2 - Project has a bridge,
that is designed to work with MyFaces.
http://cvs.apache.org/viewcvs.cgi/jakarta-jetspeed-2/portals-bridges/myfaces/
Hope it helps you.
Regards,
Matthias

What is the difference between JSR 168 portlets and WSRP portlets?

What is the difference between JSR 168 portlets and WSRP portlets?

Here is the difference between JSR168 and WSRP:
The WSRP specification does not make any statements as to implemention. Java's portlet specification, JSR 168, and WSRP are not competing technologies. JSR 168 may be used to define a portlet, and WSRP may be used to define a portlet's operations to remote containers. JSR 168 portlets and WSRP may be used together to define a portlet and to provide remote operations. Similarly, .NET portlets may be created for use with WSRP. Interoperability between JSR 168 and .NET WSRP implementations has been demonstrated

JSR 168 and UIX.

Hi,
Iam a newbie working on an JSR 168 app that makes an existing portlets as JSR 168 compatible. The portlets was orginaly developed usign the JPDK api and to incorporate standards we are making it as JSR 168 compatible.
We used the UIX pages as the front end for showing portlet content. Is it possible to leverage the existing UIX pages using the JSR 168 API. For Rendering the UIX content we used the JPDK classes like the RenderManager , PortletContainerRenderer etc.
As i understand JSR 168 provides the RenderRequest which represents the request sent to the portlet to handle a render. Can this RenderRequest be used to display UIX pages.
Just wanted to know a couple of things.
a) JPDK providers RenderManager , PortletContainerRenderer etc are there equivalents in the JSR 168 API
b) Difference between the RenderRequest of the JSR and the PorletRenderRequest class .
At a brief Iam looking for an equivalents of in the JSR 168 API which can accomplish this.
Thanks
Mouli

Hi Mouli,
In case of JPDK always you will get single request i.e., HttpServletRequest from the portlet.you can get the PortletRenderRequest from HttpServletRequest.
Way to get PortletRenderRequest from HttpServletRequest :
===========================================
PortletRenderRequest portletRenderRequest=(PortletRenderRequest)oHttpServletRequest.getAttribute("oracle.portal.PortletRenderRequest");
[NOTE : you need to import the following class.
import oracle.portal.provider.v2.render.PortletRenderRequest;]
In case of JSR 168 generally you will get two kinds of request ie., RenderRequest & ActionRequest.Where PortletRequest is the parent interface for this two interfaces.
For Ex.whenever the portlets first time loaded on portalpage the portlet will get RenderRequest & it will create its own portlet markup.When ever you perform any operation in any portlet then it will have ActionRequest & remaining portlets will have RenderRequest.
Please feel free to ask anything related to portal technology..Let me know if i specified anything wrong.....
Thanks & Regards.,
Bala S Murugan.,
sendrequestgetresponse At Gmail Dot Com
http://balamurugan-portlets.blogspot.com/

JSR 168 Under WebSphere?

If we develop portlets using JSR 168/ WSRP for Plumtree using WebSphere Studio and WebSphere (rather than WebLogic), should they work?
If there were problems that required a Plumtree fix, would such a fix be provided under normal support?
Thanks.

If we develop portlets using JSR 168/ WSRP for Plumtree using WebSphere Studio and WebSphere (rather than WebLogic), should they work?
If there were problems that required a Plumtree fix, would such a fix be provided under normal support?
Thanks.

Is it possiable to use "ALI SCRIPTING FRAMEWORK API " in JSR 168 Portlets?

Hi,
Is it possiable to use "ALI SCRIPTING FRAMEWORK API " in JSR 168 Portlets.
With Regards
Dheeraj Sai

If you want to use (let say it's possible) "ALI SCRIPTING FRAMEWORK API" in JSR 168 then these porlets are not "JSR-168" compatible anymore. So you automatically lost the main benefit of JSR-168 portlet - works over different portal vendors.
I guess if you have decided use JSR-168 you did this for reasons. Then stay this way and don't use any proprietary technologies.
By the way, this topic may help:
http://forums.bea.com/bea/message.jspa?messageID=500025455&tstart=0
Edited by Bryazgin at 05/18/2007 6:36 AM

Support of JSR 168 and JSR 286 portlets

Hi,
As far as I know there is no direct support for JSR 168 compliant portlets in the SAP portal. Remote portlets can be consumed using WSRP. I was wondering whether the SAP portal will provide direct support for JSR 168 or even JSR 286 portlets in future releases?
Regards,
Kevin

Hi Kevin,
Long time ago SAP promised to implement JSR 168. Nowadays, you don't find much official documentation stating SAP portal is JSR168 compliant.
SAP introduced the Federated Portal Network (Consumer and Producer portals), also with WSRP support.
Check:
cheers,
Noë

Error while deploying a JSR 168 portlet developed in JDeveloper 10.1.3.2

When deploying a JSR 168 portlet created using JDeveloper 10.1.3.2 (Web Center Suite edition), I get the error :
"Shared library "oracle.wsrp" could not be found."
Error Log:
---- Deployment started. ---- Sep 20, 2007 9:31:42 AM
Target platform is Oracle Application Server 10g 10.1.3 (PolestarAppServerConnection).
Wrote WAR file to C:\Projects\eAlliance\JSR168\ViewController\deploy\jsr168.war
Wrote EAR file to C:\Projects\eAlliance\JSR168\ViewController\deploy\jsr168.ear
Backing up generic archive file :/C:/Projects/eAlliance/JSR168/ViewController/deploy/jsr168_generic.ear
Creating WSDLs for the WSRP Application
WSDLs for the WSRP Application have been created
Uploading file jsr168.ear ...
Uploading file jsr168.ear ...
Application Deployer for jsr168 STARTS.
Copy the archive to /home/soahome/orasoa/j2ee/home/applications/jsr168.ear
Initialize /home/soahome/orasoa/j2ee/home/applications/jsr168.ear begins...
Unpacking jsr168.ear
Done unpacking jsr168.ear
Unpacking jsr168.war
Done unpacking jsr168.war
Initialize /home/soahome/orasoa/j2ee/home/applications/jsr168.ear ends...
Starting application : jsr168
Initializing ClassLoader(s)
application : jsr168 is in failed state
Operation failed with error:
Shared library "oracle.wsrp" could not be found.
Deployment failed
Elapsed time for deployment: 39 seconds
#### Deployment incomplete. #### Sep 20, 2007 9:32:21 AM
Steps To recreate the error:
1)Create a new Application in JDeveloper
2)Click "New" in "ViewController" and click on WebTier->Portlets->Standards based(JSR 168) from the wizard.
3)Go thru JSR 168 Portlet wizard steps 1 thru' 8 accepting all defaults.
4)Click "New" in "ViewController" and click on General->Deployment Profiles->WAR File from the wizard.
5)Enter a name and hit OK. Then in the "WAR Deployment Profile Properties" page, select "Specify J2EE Web Context Root" and enter the name similar to what is in the "Enterprise application name" text box in the same screen. Hit OK.
6)Right click on the deploy file created under "Resources" and select "Deploy to AppServer" (I am deploying to a remote 10.1.4 Portal Server that has already been configured in my connections tab.
7)Note the above noted error message in the Deployment Log tab.
Can you give me any suggestions?
Thanks,
Bipin Raj

Does the \j2ee\home\shared-lib directory contain a directory oracle.wsrp?
Does the <OC4J_HOME>/j2ee/home/config/server.xml file contain a shared-lib declaration for oracle.wsrp?
<shared-library name="oracle.wsrp" version="1.0">
<code-source path="wsrp-container.jar"/>
<code-source path="wsrp-types.jar"/>
<code-source path="wsrp-jaxb.jar"/>
<code-source path="jaxb-api.jar"/>
<code-source path="jaxb-impl.jar"/>
<code-source path="jaxb-libs.jar"/>
<code-source path="namespace.jar"/>
<code-source path="xsdlib.jar"/>
<code-source path="relaxngDatatype.jar"/>
<import-shared-library name="oracle.gdk"/>
<import-shared-library name="oracle.xml"/>
<import-shared-library name="oracle.jdbc"/>
<import-shared-library name="oracle.cache"/>
</shared-library>

How to debug jsr 168 portlet in jdeveloper 10.1.3.4

Does anyone know how to locally debug a jsr 168 portlet in jdeveloper 10.1.3.4.
When I click on run it asked for a start page so I supply the view.jsp page.
The following error occurs on the page:
500 Internal Server Error
java.lang.NullPointerException at helloworld.html._view._jspService(_view.java:61) [helloworld/html/view.jsp] at com.orionserver[Oracle Containers for J2EE 10g (10.1.3.4.0) ].http.OrionHttpJspPage.service(OrionHttpJspPage.java:59) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:462) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:122) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].server.http.HttpRequestHandler.run(HttpRequestHandler.java:111) at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260) at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:234) at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:29) at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:879) at com.evermind[Oracle Containers for J2EE 10g (10.1.3.4.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298) at java.lang.Thread.run(Thread.java:595)
This is the first jsr 168 portlet I have tried.
Previously we have been created portlets using the Oracle PDK. Those portlets are easy to debug because the wizard creates an index.jsp page for the start page.
If anyone can provide some insight to my issue it would be greatly appreciated.
Thanks,

Is this a portlet you built from scratch using the JSR 168 APIs, or is this a JSF Portlet using the JSF Portlet Bridge. If the latter, you can debug your JSF application. If the former, you can do remote debugging (let me know if you need information on this).
Hope this helps,
Peter

Consuming web services in a jsr 168 portlet best practices.

I am building portlets (jsr 168 api in Websphere Portal 6.0 using web service client of Rational). Now needed some suggestions on caching the web services data on the portlet. We have a number of portlets (somewhere around 4 or 5) on a portal page which basically rely on a single wsdl Lotus Domino Web Service.
Is there a way I can cache the data returned by webservice so that I dont make repeated calls to the webservice on every portlet request. Any best practices/ideas on how I could do avoid multiple web service calls would be appreciated ?

Interestingly, as it often happens with Oracle portal, this has started working without me doing anything special.
However, the session events my listener gets notified of are (logically, as this portlet works via WSRP) different from user sessions. The problem I'm trying to solve now is that logging off (in SSO) doesn't lead to those sessions being destroyed. They only get destroyed after timeout specified in my web.xml (<session-config><session-timeout>30</session-timeout></session-config>). On the other hand, when they do expire, the SSO session may still be active, in which case the user gets presented with the infamous "could not get markup" error message. The latter is unacceptable in our case, so we had to set session-timeout to a pretty high value.
So the question is, how can we track when the user logs off. We have found the portal.wwctx_sso_session$ and portal.WWLOG_ACTIVITY_LOG1$ (and ...2$) tables, but no documentation for them. However, the real problem with using those tables is that there's no way we could think of to match the portlet sessions with SSO sessions/actions listed in the tables. (Consider situation when someone logs in from two PCs.)
Any ideas?

Portlet API: JSR 168 / 286 vs Vendor Extensions

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