Inside WSRP- backing file

Hello,
I have problems with remote portlets, events and page flow.
I have a remote portlet in the consumer. This portlet is generate from a pageflow. The portlet have a backing file with a customer method & the methods associated with the life cycle of the baking file.
Also the portlet have an event that it is thrown when a specific action in the page flow is executed.
The process is:
1- In the form the action is thrown
2- The Page Flow event is executed and it invoke a specific customer method on the backing file
3- This method is executed
4- The portlet goes to the next page.
In local mode this process is sucess but when I make a remote portlet the specific customer method in the backing file is never called.
I am looking for inside wsrp:
http://dev2dev.bea.com/pub/a/2005/03/inside_wsrp.html?page=5
However I have got others portlets that are not generated from page Flow with its associate backing file, specific customer method and it is sucess process.
I suppose the problem is I canÂ´t asociate correctly the method of the backing file with the portlet in the producer.
Can someone help me with this problem?

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

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WSRP portlets - consumer-side backing files

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Do NOT modify the URL, instead do a POST to your actionUrl and pass in the parameter in the POST body. You, will also need to do use a PortletXMLHttpRequest to avoid getting the entire page returned.
Good luck,
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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";
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I have configured the Portlet B's eventhandler to listen for the 'customEvent' and invoke the pageFlowAction 'listenForEvent'
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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

Unable to create temporary backing file

My program is throwing out the error:
temporary open: /var/tmp/BDB20825: Too many open files
unable to create temporary backing file
This happens after my program has been running for about 4 hours. The program appears to run out of file descriptors. The listing of /proc/<PID>/fd shows hundreds of lines naming the same file (/var/tmp/BDB20825), like this:
lrwx------ 1 zobell users 64 Jul 28 14:41 622 -> /var/tmp/BDB20825 (deleted)
That file does not exist. I suspect that someone is deleting but failing to close the file. A few open file descriptors with this deleted file occur slowly in the early hours, but not at a fast enough rate to bring the program down when it does. It looks like there is a sudden flood at the end.
The program repeats this error slowly, and is stuck inside the db code. Here is the gdb backtrace I am seeing every time I interrupt:
(gdb) where
#0 0x00e74410 in __kernel_vsyscall ()
#1 0x003d51dd in ___newselect_nocancel () from /lib/libc.so.6
#2 0x002e5d39 in __os_sleep () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#3 0x002e43f1 in __os_openhandle () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#4 0x002e52ad in __os_open () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#5 0x002c0357 in __db_tmp_open () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#6 0x002c006c in __db_appname () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#7 0x002d50c9 in __memp_bhwrite () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#8 0x002d4a27 in __memp_alloc () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#9 0x002d62ec in __memp_fget () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#10 0x00232003 in __bam_new_file () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#11 0x002abc79 in __db_new_file () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#12 0x002abaff in __db_open () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#13 0x002a5d15 in __db_open_pp () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb-4.6.so
#14 0x0080644c in Db::open () from /devel/tfm/external/RH4_32/dbxml/latest/install/lib/libdb_cxx-4.6.so
#15 0x0053ebbe in DbXml::DbWrapper::open (this=0x405bbee0, txn=0x0, type=DB_BTREE, flags=65537, mode=0) at Transaction.hpp:62
#16 0x00549247 in CacheDatabase (this=0x405bbed8, env=0x9c5a848, type=DB_BTREE, compare=0) at CacheDatabase.cpp:28
#17 0x005497e2 in DocDatabase (this=0x405bbed8, env=0x9c5a848, compare=0) at CacheDatabase.cpp:46
#18 0x00584ced in DbXml::Manager::createDocDatabase (this=0x9c5a830, compare=0) at Manager.cpp:694
#19 0x00519467 in DbXml::CacheDatabaseMinderImpl::verify (this=0xfffffdfe, entry=@0x6ac2f790, cid=-514) at CacheDatabaseMinder.hpp:31
#20 0x00519398 in DbXml::CacheDatabaseMinderImpl::findOrAllocate (this=0x6ac5b4f0, cid=1, allocate=true) at CacheDatabaseMinder.cpp:71
#21 0x00518e59 in DbXml::CacheDatabaseMinder::findOrAllocate (this=0x6acd9fa0, mgr=@0x9c5a830, cid=1, allocate=true) at CacheDatabaseMinder.cpp:21
#22 0x0055b12d in LazyDIResults (this=0x6acd9f98, context=0x6acd9fa0, contextItem=0x4979abc0, expr=@0x9ce5de8, txn=0x0, flags=0) at /devel/tfm/developers/szobell/berkeley-db-xml/dbxml-2.4.16/dbxml/include/dbxml/XmlManager.hpp:80
#23 0x0052f9cd in DbXml::QueryExpression::execute (this=0x9ce5de8, txn=0x0, contextItem=0x4979abc0, context=@0xbfcb0e04, flags=0) at /devel/tfm/developers/szobell/berkeley-db-xml/dbxml-2.4.16/dbxml/include/dbxml/XmlQueryContext.hpp:86
#24 0x00565a3a in DbXml::XmlQueryExpression::execute (this=0x0, contextItem=@0xfffffdfe, context=@0xbfcb0e04, flags=4294966782) at /devel/tfm/developers/szobell/berkeley-db-xml/dbxml-2.4.16/dbxml/include/dbxml/XmlValue.hpp:186
#25 0x0805af4b in XmlRecordWithCounts::ExtractQueryString (this=0xbfcb0dd0, select=@0xbfcb0e2c, result=@0xbfcac1d0, qDocument=0xbfcb0e14) at src/XmlRecordWithCounts.cpp:401
#26 0x080585f6 in OdRecord::GetRequiredContent (this=0xbfcb0dd0, name=@0xbfcac1e0, origin=@0xbfcac1d0, dest=@0xbfcac1c0, type=@0xbfcac1b0, dist=@0xbfcac198, totalCount=@0xbfcac194, route=@0xbfcac1a0, qDocument=0x0) at src/OdRecord.cpp:143
#27 0x0804d9c3 in ProcessOd (fpPrivate=0x8e11098, odDb=@0xbfcb0dd0, fdDb=@0xbfcb0d20) at src/BuildFdDb.cpp:263
#28 0x0804f4c8 in ProcessOneDest (fpPrivate=0x8e11098, odDb=@0xbfcb0dd0, fdDb=@0xbfcb0d20, dest={static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<No data fields>}, Mp = 0x9da758c "LAX"}, static Sempty_rep_storage = {0, 0, 69041, 0}}) at src/BuildFdDb.cpp:464
#29 0x080501cd in main (argc=6, argv=0xbfcb10c4) at src/BuildFdDb.cpp:589
At this time, the program is trying to extract fields out of an XmlDocument that is the result of a query. The program uses a pre-calculated XmlQueryExpression to extract a specific field. This may not be the best way to extract a field from a document, given the apparent overhead of needing a temporary file!
My program queries two database files (OD.dbxml and FD.dbxml.new), and uses the information to add records to the second file. The databases are rather big:
bash-3.2$ ls -l /tmp/*dbxml*
-rw-rw---- 1 zobell users 5233745920 Jul 28 14:42 /tmp/FD.dbxml.new
-rw-rw---- 1 zobell users 6539427840 Jul 13 10:16 /tmp/OD.dbxml
(I keep them in /tmp because everywhere else uses NFS and performance is awful with NFS.)
My environment:
Red Hat Enterprise Linux Client release 5.3 (Tikanga) 32 bit.
Berkeley DB XML 2.4.16, C++ interface.
Disk space should not be an issue:
bash-3.2$ df /tmp /var
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-tmp
28948572 13044384 14409968 48% /tmp
/dev/mapper/VolGroup00-root
144742920 5333544 131938272 4% /
I ran this program about a year ago and did not see this issue. I have made a few changes and linked to the newer version of the XML database since then. Any help is appreciated.

I have more information about this problem.
If I "disable" the routine __os_zerofill() in os_fzero.c, by having it always return (0), I no longer get an exception and my application appears to run smoothly. However, I have not determined what in this routine leads to the exception. And, I have no idea what the short and long term consequences of "disabling" this routine will be....
-Coralie

I am not able to use two backing files in same portal page

hi to all
i am using backing files in remote portlet.
but i have two portlets in my portal page and in both i need to use backing files. i used seperate backing files for both the portlets but only one works at a time.
please help me out frnds..
did this happening because of same object MarkupRequestState.KEY..... following is code that i am using. similar code used for another portlet, just a change of state varible and parameter variable
am i missing something?
package backempno;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.bea.netuix.servlets.controls.content.backing.AbstractJspBacking;
import com.bea.wsrp.ext.holders.MarkupRequestState;
import com.bea.wsrp.ext.holders.SimpleStateHolder;
public class sendempno extends AbstractJspBacking
public boolean preRender(HttpServletRequest request,HttpServletResponse response)
SimpleStateHolder state2 = new SimpleStateHolder();
String empno=request.getParameter("empno");
state2.addParameter("empno",empno);
request.setAttribute(MarkupRequestState.KEY, state2);
return true;
}

Hi Susan,
In that case I will recommend that you consult a local technician/IT team and see if there is some network connectivity issue with your machine.
- Abhishek Maurya

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();

Backing Files Stop Working For No Apparent Reason. Help?

I have a portal application accessing a remote WSRP PageFlow portlet. The remote portlet populates a backing file and the producer application reads the data. It was working fine and then it stopped working for no apparent reason. The data was simply null, no errors or warnings. I put traces in the backing file and verified that the life-cycle methods were indeed being called and that data was there, and yes, both were indeed the case. Data is being set on the SimpleStateHolder and it's just not transferring over to the producer side.
In order to rule out environmental issues, I've done this on multiple machines. Also, I started a whole new project, got backing file setup, verified that it worked, started developing with it and one time I deployed and it was broken again. I rolled out the changes I had just made but it didn't matter. The earlier code still failed to work although it had been working moments earlier.
So, any ideas? Has anybody else encountered backing file issues like this and if so do you have any suggestions on debugging or fixing them?
Ryan

I have a portal application accessing a remote WSRP PageFlow portlet. The remote portlet populates a backing file and the producer application reads the data. It was working fine and then it stopped working for no apparent reason. The data was simply null, no errors or warnings. I put traces in the backing file and verified that the life-cycle methods were indeed being called and that data was there, and yes, both were indeed the case. Data is being set on the SimpleStateHolder and it's just not transferring over to the producer side.
In order to rule out environmental issues, I've done this on multiple machines. Also, I started a whole new project, got backing file setup, verified that it worked, started developing with it and one time I deployed and it was broken again. I rolled out the changes I had just made but it didn't matter. The earlier code still failed to work although it had been working moments earlier.
So, any ideas? Has anybody else encountered backing file issues like this and if so do you have any suggestions on debugging or fixing them?
Ryan

How can I have a backing file call a JavaScript function?

I have a Weblogic portal with a JSP portlet. The portlet has a backing file. How can I get the backing file to call a JavaScript function in my portlet?
thanks

Hi
your questions are not correct because you are mixing up server side operations with client side operations.
First server side code executes then the page is sent to the browser , then any javascript executes on the browser. So asking for javascript to be called from backing file (server side) doesn't make sense or asking for javascript to read a parameter doesnt exactly work either.
However in your server code suppose you have a variable action in the request that you want javascript to know then in your JSP you would add something like
<script type="text/javascript">
var action = '${requestScope.action}';
alert(action);//or whatever you want to do
<c:if test="${requestScope.someOthervariable == ''xyz'}"><%-- this check is done on the server --%>
callSomeJavascript(); <%--this javascript is only executed when the server side value of someOtherVariable is xyz --%>
</c:if>
</script>
i.e. you can output the javascript that has the variables you need or the function calls you want.
Like I said understand whats server side and whats client side.

How to call a database controller in backing file

Hello,
First of all, I'd like to apologize if this question is posted by someone else before. But because I haven't been to find the answer so I just post this question here with hope that someone will have the answer for me.
I am using weblogic 8.1 SP3. I am trying to build a web portal which requires users to login and logout. Based on the tutorials from BEA and the documents that I read in this forum, I decided to use backing file to check for the username and password. I am using MySQL database and I have a page flow controller which is based on the database control. How can I call that control in the backing file? Or is there anyway to compare the username and password that the user enters to the ones in the MySQL tables? I don't want to create a database connection in that backing file since the page flow controller can do that for me already.
Any help is appreciated
Thanks in advance
TL

select ename from emp@dblink
...lose the double quotes.
Scott

How can i get the path to config folder placed inside the jar file?

Hi i have developed an RCP application using eclipse.
In my application config directory is there.
When i export my RCP application as JNLP Project the jar file is created which contains config folder inside it.
When i download the application using java web start , how can i get the path to config folder placed inside the jar file?
Will the config folder exists in local cache in my system?
Help needed.
-Deepak

-- This works in CS6:
tell application "Adobe InDesign CS6"
set myDocument to active document
set selectedRectangles to selection of myDocument
set theGraphicsLink to file path of item link of (graphic 1 of (item 1 of selectedRectangles))
--> "Macintosh HD:folder/folder/filename.tif"
end tell

Portlet backing file vs content backing file

Hi,
could someone explain the differences between a "portlet backing file" and a "content backing file". Both are properties available on a portlet.
Thx
Emmanuel

According to the documentation, here is the difference:
Scoping and Backing Files
The difference between having a backing file as part of <netuix: portlet backingfile =some_value> or part of <netuix: jspContent backingfile=some_value> is related to scoping.
For example, if you have the backing file on the portlet itself, you can actually stop the portlet from rendering. If the backing file is at the jspContent level, the portlet portion of the control tree has already run; you use this implementation to run processes that are specifically for the JSP in the portlet.
See http://download.oracle.com/docs/cd/E13155_01/wlp/docs103/portlets/building.html#wp1077130 for more info.
Brad

How to get PortetSession object in backing file

Hi all,
Is it possible to get PortletSession object for current portlet in a backing file. If it is then could you please tell me how?
regards
-saurabh

Pl see your duplicate post here - How to capture SQL *Loader program parameter value in control file?
Srini

Is it possible to use a portlet backing file on the dvt_enabler portlet?

We currently have a 9.2 portal with a simple login form portlet that uses a backing file to do much security checking, authentication against ActiveDir, etc. Our requirement is to convert to WLP 10.3 using the DVT enabler portlet or something like it for login (because DVT/DISC is to be turned on for the portal). will it be possible to specify that backing file against the DVT enabler portlet?

I'm not sure using the DVT enabler portlet will do what you want. It basically just specifies the render dependencies to bring in the dojo and dvt javascript libraries. It doesn't provide any login support itself; the javascript it brings responds to the logged-in state of the user (accessed via DISC), so something else is required to login the user.
Greg

Problem with backing file in weblogic portal

Hi friends,
Hope all are good. How to call the backing file methods,before begin method of jpf portlet of weblogic.
Thanks,
Ramanuja kolla.

Serge, can you post this in weblogic.servlet.interest.portal? There is a
          chance portal gurus might be able to answer this query
          --Nagesh
          "Serge" <[email protected]> wrote in message
          news:403080b2$[email protected]..
          >
          > Hello.
          >
          > I am developing Portal Web application now using WebLogic Workshop 8.1
          with Service
          > Pack2 and I have a problem with Default Page in Portal.
          >
          > The problem is following: when I click on ANY link (even on Minimize or
          Maximize
          > in Portlet titlebar) on the page that is not default for my application,
          default
          > page is always shown. Why does it happen? Can you help me?

Call class inside a jar file??

Hello group,
I have a class with a main mathod and this class is inside a .jar file. This jar file reside under my
web-inf\lib or class-path directory in my application at Weblogic Server.
How can I call this class by command line?
I have to create a cliente to do it?
Is it possible? IÂ´m having problems because the weblogic server is using the jar file at the same time that I trying use it calling by command line.
Where can I find more information?
Message was edited by:
Denimar

Authcloud9981 wrote:
Hi I have an executible JAR file that I can call from command line by using the command - "java -jar file.jar".
Is there a way for me to call this JAR file inside a Java class in another Java Program?There can be more going on in a jar than just as a container for classes.
The manifest defines the behavior. So to replicate the behavior you must do exactly that.
As an example of that.
[http://java.sun.com/developer/Books/javaprogramming/JAR/basics/manifest.html#download]
Additionally by running it in your application you must consider what the scope of that is. If you just load the classes directly then they will be in the system class loader and thus cannot be unloaded. Using a class loader solves that.

Inside WSRP- backing file

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