How to use jsf2 exception handled

hi,
i'm a new to jsf2
i want to catch the exception from action, and show it on a pop page, or alert the exception message in JS.
but i don't know how to catch the exception from service(like action, ejb), and show it on client(like page or js).
i'm try to user A4J.Ajax.onError (i use jsf 2 and richfaces4), but there is a js error A4J is not defined.
please help~

i'm try to user A4J.Ajax.onError (i use jsf 2 and richfaces4), but there is a js error A4J is not defined.Yes so you are doing it wrong and you need to read the manual. Fixing errors is a big part of your job you know, running to a forum the first hitch you get is not going to make you a valuable contribution to the software development market.
http://www.jboss.org/richfaces/docs

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How to use the exceptions in a RFC ?

I can use XI (through BPM) to call a RFC and get response from the "Export" of a RFC. But could I get the exception from the "exception" of a RFC ?
I tried to write a RFC which will generate a exception and I found it in the XI monitor, but how to use it ? i.e. sometimes I need to get the "export", but sometimes I need to get "exception". Is there any documents or examples for it ? thanks.

Hi,
But for fault message, I don't know how to send it to a receiver.
There is no other configurations that you need to do with respect to fault messages.
If the rfc returns an exception, this message, is passed on to the receiver instead of the response message.
The receiver of the fault message will be the system that sent the request.
(If I can use a transformation to mapping it to other message, I think it's ok too.)
You need not use a BPM, for this, in case you are using it only for fault message handling.
All you need to do is, create a message mapping, with source and target message types as RFC exceptions and carry out a one to one mapping.This would display the exception coming from the RFC as the fault response st the sender.
In case, the exception returned from the RFC is not self-explanatory, you could map constants to the target message type(in message mapping) which would explain the reason for the fault.
Regards,
Smitha.

How to use customized exception

Hi all,
I have a problem using struts-action-mappings.
I have a method for update in my app module, and i'm using that method with data action.
In that method, I have to throw my customized exception to user if there is error. I just don't know how to catch the exception and display it in page.
I've read about struts page flow diagram elements and know there are Exceptions and Global Exceptions. But i still don't know how to use them.
What i want to know is can I relate my custom exception with Exceptions/Global Exceptions in struts diagram? And if so, can anybody show me an example for it?
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1.Create a method GET_ACTORS using RH_GET_ACTORS,
2.Create a container element 'Actors' type string with multiline.
3.Create Task, where you can call the Method GET_ACTORS and pass the Container values of 'Actors' from Method->Task->Workflow
4.Create a Step type before creating the Step mail and include the previous Task.
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Regards,
Sriyash

How to implement this: Exception handler for managed bean

Hi, i'm using jdev 11g rel 1 , and i know i can use custom java class to extends DCErrorHandlerImpl, and override some method to customize the output or other info of my exceptions.
And then config it for databindings.cpx to make it available. But i found that this is only available for JboExceptions which are thrown from BC layer and through databindings.
If my exceptions are from managed bean, or just use application module to use the methods in it, while encounter exceptions, there's no way to handle it.
How can i handle it in managed bean in just one place(for architecuture layer)? ,
who can give some suggestion?

If my exceptions are from managed bean, or just use application module to use the methods in it, while encounter exceptions, there's no way to handle it.
How can i handle it in managed bean in just one place(for architecuture layer)? ,
who can give some suggestion?If you use application module methods in the managed bean, then use them through methodAction bindings so that the standard error handling works as expected.
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If you need to do a whole lot of error handling in the bean (instead of just showing a message once in a while), you might be putting too much business logic where it doesn't belong. Consider moving that logic to the AM

How to use common event handler for selected movie clips?

I have a 50-state map in a flash movie. Each state is a movie
clip.
Goal: when mouse moves over a state or is clicked in a state,
the state will be highlighted in a bright color and a small box
will pop up near the state and display some information about the
state.
Question: I know I can add mouse event handler for each state
movie clip. But this is simply not good since this has to be done
50 times and codes thus scattered different places. Ideally, I only
want to have one script that determines where the mouse position is
when events trigged and then do right things (highlight the state
and display info. in a pop-up). How can this be implemented?
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There are a number of ways. Which way is best depends on how
you have things set up so far.
E.g. If they have an enumerable naming convention:
e.g. each clip is like state_0 , state_1 etc.
Then you can loop through them and assign them all to the
same mouse event handler via the loop. You would need properties
other than the name of the clip to identify the state. E.g. each
clip could contain its own data or the index could be a pointer to
the state data (objects with state name and info properties) in a
separate array.
//state clips named
for (var i=0;i<50;i++) {
this["state_"+i].stateindex=i;
this["state_"+i].onPress= statePressHandler;
var stateData:Array = [{name:"StateName,info:"this state
Info"}, name:"StateName,info:"this state Info"}, etc...]
function statePressHandler() {
trace(this);
trace(stateData[this.stateindex].name+"="+stateData[this.stateindex].info);
Other ways are possible too but the best approach depends on
how you have named the clips and whether you're creating them with
code or whether they're already on stage from authoring (my guess).
If they're already on stage and they're called "Alaska" etc, then I
would be inclined to put them all inside a container clip that
contains nothing else other than states. It would avoid the need
for an array of clip names or for checking some other specific
property of each clip to determine if its a 'state' clip and not
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How to implement Exception Handling error in IDoc to File and RFC to File

Hi,
We are implementing the two below scenarios :
1. IDOC to File
2. RFC to File
We have to implement the Exception Handling for the above two cases. Kindly could you provide the inputs to implement the Exception Handling for the above two cases.
Please provide the precious inputs to implement this.
Thanks,
Ramesh

Hi Ramesh,
The exception handling for idocs
http://help.sap.com/saphelp_nw04/helpdata/en/dc/6b7f1543d711d1893e0000e8323c4f/frameset.htm
Exception handling in File to IDoc Scenario
For RFCs
Re: Passing SAP Exceptions to a sync SOAP Call
Error Handling when using RFC
Exception Handling while Calling RFC - BPM
handle exceptions in remote function modules
Regards,
Prateek

Exception Handling for many bean objects of a container class in a JSP page

Hello,
I have on container bean class. In this container class, there are several others class objects and the getter methods to get these objects out to the JSP pages.
I have one JSP page which will use different objects in the container class object through the getter methods of the container class.
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Please give me some suggestions. Thanks
Tu

Thanks for your reply.
Since the container is the accessor class, I have no other super class for this container class, I think I will try the try catch block in the getter methods.

Exception Handling in bounded taskflows - expected behaviour

Hi,
I'm currently reviewing exception handling in bounded task flows and some things does not seems to be very clear for me.
(q1) Does it make sense that a bounded task flow calls a method (via a method activity) defined on the page definition of another page (outside of the BTF) by using a #{data.xxxmyPageDef.myMethodName.execute} EL expression?
(q2) Is is correct to expect the application to execute the method marked as ExceptionHandler in the taskflow, whenever an exception occurs?
(q3) I created 5 different scenarios where I call a service method which throws an exception, from within a page fragment of the BTF.
(q3 – sc1) Call a service method through the binding layer of the current page (by using #{bindings.xxx.execute})
Result: A dialog containing the exception message appears.
This is what I expected. Althought, the exception handler method does not seems to be invoked.(q3 – sc2) Call a service method through a task flow method activity using #{bindings.xxx.execute}
Result: A dialog containing the exception message appears.
This is what I expected. Althought, the exception handler method does not seems to be invoked.(q3 – sc3) Call a service method through a task flow method activity using #{data.myPageFragementPagedef.xxx.execute} (accessing the pageDef of the page fragment)
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage.(q3 – sc4) Call a service method through a task flow method activity using #{data.myPageContainingThePageFragmentPageDef.xxx.execute} (accessing the page containing the BTF region)
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage. (q3 – sc5) Call a service method through a task flow method activity using #{data.aPageOutsideTheBTFPageDef.xxx.execute} (accessing a page outside the BTW)
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage. (q4) How can it be possible that – without an exception handler – exceptions occur when calling method activities, without the exceptions being translated to FacesMessages?
Thanks in advance,
Koen Verhulst
JDeveloper 11.1.1.4

Koen,
+(q1) Does it make sense that a bounded task flow calls a method (via a method activity) defined on the page definition of another page (outside of the BTF) by using a #{data.xxxmyPageDef.myMethodName.execute} EL expression?+
No. Exceptions should be handled locally.
+(q2) Is is correct to expect the application to execute the method marked as ExceptionHandler in the taskflow, whenever an exception occurs?+
Only for exceptions that are before Render Response. The Render Response Phase is not handled in ADFc. So exceptions that occur in managed beans may fall through
+(q3) I created 5 different scenarios where I call a service method which throws an exception, from within a page fragment of the BTF.+
+(q3 – sc1) Call a service method through the binding layer of the current page (by using #{bindings.xxx.execute}) Result: A dialog containing the exception message appears.+
This is what I expected. Althought, the exception handler method does not seems to be invoked.
The binding layer has an error handler you can override in the DataBinings.cpx file
+(q3 – sc2) Call a service method through a task flow method activity using #{bindings.xxx.execute}+
Result: A dialog containing the exception message appears.
This is what I expected. Althought, the exception handler method does not seems to be invoked.
Again, you use the binding layer to invoke the service
+(q3 – sc3) Call a service method through a task flow method activity using #{data.myPageFragementPagedef.xxx.execute} (accessing the pageDef of the page fragment)+
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage.
Never use such a call. Its bad practice as there is no guarantee the container you reference is active. Always have the method call activity have its own binding defined when accessing a method call activity. I know there are lots of example floating aroundthat you #{data ...} and many are from 10.1.3. This should be avoided alltogether though
+(q3 – sc4) Call a service method through a task flow method activity using #{data.myPageContainingThePageFragmentPageDef.xxx.execute} (accessing the page containing the BTF region)+
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does not seems to be invoked, I expect the ADF Error Handler to create a FacesMessage.
Again, this is not a proper use of the ADF framework.
+(q3 – sc5) Call a service method through a task flow method activity using #{data.aPageOutsideTheBTFPageDef.xxx.execute} (accessing a page outside the BTW)+
Result: Nothing happens. This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage.
accessing a page outside the BTW (!!!) This should ring a worst practices alarm on your laptop (obviously doesn't do it either)
+(q4) How can it be possible that – without an exception handler – exceptions occur when calling method activities, without the exceptions being translated to FacesMessages?+
Exceptions are not handled in a single place but stacked. The business service raises an exception and passes it to the binding layer if not handled. The binding layer handles the exception and if it can't passes it to ADFc. ADFc can handle this exception if it is not during Render Response.
Bottom line: There is no single point of exception handling. So as a recommendation for best practices
- Catch and handle exceptions as close as possible to their origins
- If things can go wrong, thy will - use try/catch blocks in managed beans
- Use an exception handling activity in all bounded task flows. In the case of task flow call activities being used exceptions can bubble up to the caller. However, this would take users out of their current application context
- Exceptions not handled in ADFc can be intercepted by overriding the application task flow exception handler (used by the exception handler activities). This would give you a chance e.g. to handle issues during Render Response
- Never fight the framework, never bend the framework: Don't use out of scope access to page definitions and resources. Exception handling is not a replacement for bad code practices (sorry for saying this, its not meant to be rude) :-)
Though I don't have a qualified numbers of bugs open for exception handling in ADF between 11.1.1.4 and now (and some that are open), but there are issues reported in this area. If there is something that really feels wrong, please go ahead and file a bug and provide a test case for development to have a look. The Render Response issue, for example is something we are aware of and that is in discussion (afaik knows, there is a change in exception handling in JSF 2 that may have an impact to what we can do in ADFc).
thanks
Frank

Exception Handling in Message Mapping and Alert

Hello,
1. Pls let me know the concept of Exception Handling and Alerts.
2. Pls provide some blogs for Exception Handling in Message Mapping.
3.What are Alerts and how it help us in XI. Pls provide some blogs for Alert
4.How are Alerts and Exception Handling can be related say for some scenario
Regards

Hi,
Plz check out these blogs of Sravya on Error Handling:
/people/sravya.talanki2/blog/2006/11/22/error-handling-framework-xiout-of-the-box-episode-1
/people/sravya.talanki2/blog/2006/11/23/error-handling-framework-xiout-of-the-box-episode-2
Also check this SAP Presentation:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/9418d690-0201-0010-85bb-e9b2c1af895b
/people/alessandro.guarneri/blog/2006/01/26/throwing-smart-exceptions-in-xi-graphical-mapping
Error Handling :
http://help.sap.com/saphelp_nw04/helpdata/en/56/b46c3c8bb3d73ee10000000a114084/frameset.htm
Alerts:
/people/michal.krawczyk2/blog/2005/09/09/xi-alerts--troubleshooting-guide
/people/michal.krawczyk2/blog/2005/09/09/xi-alerts--step-by-step
http://help.sap.com/saphelp_nw04/helpdata/en/56/d5b54020c6792ae10000000a155106/content.htm
BPM:
/people/arpit.seth/blog/2005/06/27/rfc-scenario-using-bpm--starter-kit
Working with acknowledgements
regards

ESB Exception handling

Dave,
In your Advanced Architecture presentation you mentioned about default and custom error handlers for non transactional end points. And you mentiond JMS:// and BPEL:// handlers as an example. So my question is how to configure this? I assume this involves editing ESB service files. Any documentation in this regard is appreciated. I know BPEL supports this via inbound activation specs but not sure about ESB.
By transactional you mean Asynch invocations, right? If I invoke a BPEL either via SOAP or internal Java binding, can I still use the exception handling for a Asynch invocation?
Thanks in advance.
Regards,
Rajesh

Hi Dave,
I checked this document yesterday, it contained 18 pages.
Some great info in the additional 7 pages, just in time as well: at a customer site we are hitting bug 5547165, the rejected messages being empty. I checked the rejection handlers for BPEL and was investigating how these could be used in case of ESB. Seems you have provided the answer.
Any chance a fix for the bug mentioned here is in the 10.1.3.3 patch set?
One more thing: by default the rejected messages for ESB are written to file system, in a directory below the 'home' OC4J instance. Could this be turned into a configurable space in a next release?
Thanks and best regards, Sjoerd

Is Exception handler necessary for every stored subprogram

Hi All,
I knwo exception handler is very important. But is it necessary for every stored procedure or function?
For example,
procedure test(p_index_code IN varchar2(10)
p_changed_code OUT varchar2(15))
as
begin
IF p_index_code = 'A' then
p_changed_code := 'A'|| p_index_code;
elsif p_index_code = 'B' then
p_changed_code := 'B'|| p_index_code;
else
p_changed_code := p_index_code;
end if;
end;
This kind of simple procedures, do I have to add the 'exection when others than raise_application_error(-20001,'error in this SP')'?
I can't see obvious drawbacks without the exception handler in this CASE.
Best regards,
Leon
Edited by: user12064076 on Nov 11, 2010 7:12 PM

user12064076 wrote:
I knwo exception handler is very important. But is it necessary for every stored procedure or function?It is important to know WHY an exception handler is needed. There are couple of basic reasons why you want to use an exception handler.
The exception is not an error.
The exception raised is a technical error, but may not be a business or processing error. The typical example is the NO_DATA_FOUND exception. The business logic may say "+when there is no fixed discounts found, apply a 5% dis-count+". So not finding (dis-count) row data in such a case is not an exception. What does you exception handler do? It fixes the exception and there is not an exception anymore. In other words, the caller that called your code will never know that there was an exception.
Making the exception meaningful
An exception, like NO_DATA_FOUND, is not very meaningful. What is meaningful is NO_INVOICE_FOUND or NO_CUSTOMER_FOUND. Thus your exception handler can catch a generic exception and make it more meaningful by returning a custom application exception instead.
Action stations
Some exceptions will require you to clean up and fix what you can - kind of like action stations when a ship takes a hit. But as you cannot fix the exception, the exception must be passed to the caller so that it too can decide how to re-act to that exception. For example, you may have an open ref cursor or open UTL_FILE handle that needs to be closed when your code terminates. If not, your code will leak resources. So you need to trap exceptions that can occur, clean up, and then re-raise the exception (this is called a resource protection code block in other languages). You may have done a partial transaction - and the exception handler may need to roll back the changes your code made. The bottom line here is that you must re-raise the exception after you have done your "+action stations+" bit. You did not fix the exception. You did not make it more meaningful. In that case you must pass it back to the caller so that it can decide what it needs to do about that exception.
Using an exception for any other reason - that would likely be the wrong thing to do most of the time.

Exception Handling : Memory Leak???

Hi all
I have a problem in my system.It use radius-ldap for authentication and insert accounting to Oracle DB.In accounting table,I put a trigger with using an exception handling to update or insert some data to other tables in Oracle schema and ldap schema.When error occured,exception would be handled but when it completed,trigger didn't not release all of connections between Oracle DB,radius and ldap.Many many TCP connections were established but not destroyed and my system spent all memory for these connections.This may be caused by exception handling.
Does any body have a same problem?How can I solve this?
Sincerely Yours.

Does anybody know how to solve this problem?

How to use an infopath form field in the designer workflow

Hi,
I need to send an email to a person field from Infopath form. Can i access it in the workflow. If not, is there a way i can send an email on form submission from within the infopath form.
Please help. Thank you.

Hi Prajk,
There are three ways of achieving it, one i will say its pretty straightforward and covers the basic of Infopath Forms Development
1)Populate Fields From Infopath Form at the time of Publishing.
The moment you done with your form and to publish you click FIle>Publish>SharePoint Server >Enter the Url of Site> Then Click Next twice upto a point where wizard asks "The fields listed below will be available as SharePoint Columns" ,
Click Add, select the placeholder in myfields for Person Field , expand the "person" group field and choose "AccountId", give the name to column(this will be SharePoint List Column Name) and for function select "first" and then
click next and Finish.
And use this field in Designer Workflow to send email.
2)Second way is to write VSTA based C# code on click of your Submit action on the form and upload and activate this form on form library via Central Admin.
3)Now other way of doing this is via Event Recievers.
Every infopath Form is an XmL File so on ItemAdded event you can extract its content and implement email sending c# code there:-
http://www.bizsupportonline.net/infopath2007/how-to-use-sharepoint-event-handler-object-model-submit-data-infopath-form-sharepoint-list.htm
Mark as Answer if helped!! To be or Not to Be..The question is this only......

Exception handling without BPM

Hello,
I have done exception handling with BPM.
i.e. when there exception comes in mapping I have use Block Exception Handler.
Can this be done without BPM.
Please snd me blog for it.
Regards

Hi,
As explained by Michal it is correct, but in message mapping , we can raise an alert .
See the below links
Alerts with variables from the messages payload (XI) - UPDATED - /people/michal.krawczyk2/blog/2005/03/13/alerts-with-variables-from-the-messages-payload-xi--updated
Triggering XI Alerts from a User Defined Function - /people/bhavesh.kantilal/blog/2006/07/25/triggering-xi-alerts-from-a-user-defined-function
Regards
Chilla

How to use CTU_Params ??

How to use CTU_Params to handle Table Control in BDC ??

See this post
How to insert data in table control through bdc ....problem is every system displays different no of rows in the table control when you enter the application....for ex .. purchase order, pur req, bom....
Solution:
Use CALL TRANSACTION 'ME21N' OPTIONS FROM w_ctu_params.( type CTU_PARAMS)
This structure contains the follwing.
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UPDMODE: Update mode (like the UPDATE addition)
CATTMODE: CATT mode (controls a CATT)
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How to use jsf2 exception handled

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