Handling general errors via class based exceptions

Fairly standard scenario: I've got this.
DATA: l_requester TYPE xubname.
CALL FUNCTION 'ENQUEUE_EZMYTAB'
    EXPORTING
      username             = i_username
    EXCEPTIONS
      foreign_lock         = 1
      system_failure       = 2
      OTHERS               = 3.
CASE sy-subrc.
    WHEN 1.
      l_requester = sy-msgv1.
      RAISE EXCEPTION TYPE zcx_my_exception EXPORTING textid   = zcx_my_exception=>lock_error
                                                      user     = i_username
                                                      lockedby = l_requester.
    WHEN 2.
      RAISE EXCEPTION TYPE zcx_my_exception.
ENDCASE.
But what I really want for WHEN 2 is the class based exception of
MESSAGE sy-msgid TYPE sy-msgty NUMBER sy-msgno WITH sy-msgv1...
I.e., in my calling code, I want to catch the exception, and display whatever the original error message was as generated by the ENQUEUE function module.
I suppose I could do this
DATA: ls_error TYPE scx_t100key.
WHEN 2.
ls_error-msgid = sy-msgid.
ls_error-msgty = sy-msgty.
ls_error-msgno = sy-msgno.
RAISE EXCEPTION TYPE zcx_my_exception EXPORTING textid = ls_error
but I can't help feel I'm missing something staggeringly obvious...
matt

Hi Matt,
this may sound too simple:
For me the real advantage of class-based-exception is that they can be raised in an inner block and caught in an outer block at any level.
I never use the exception attributes to communicate any details, but use
IF SY-SUBRC NE 0.
MESSAGE sy-msgid TYPE sy-msgty NUMBER sy-msgno WITH sy-msgv1... INTO lv_string.
Raise Exception type zcx_my_exception.
ENDIF.
Catching the exception I may (roughly) know where it comes from. As the message variables are present, I can check their values or repeat the MESSAGE without INTO. The main function of MESSAGE INTO is for transparency, the ability to see the whole message in debugger in lv_string and the where-used-list if message is created by programmer..
If I really need different reaction for different SY-SUBRC ( = different untyped exception), I'd rather create different class-based exceptions. This helps transparency.
In other oo language you do not have an ABAP message concept with everywhere-present message variables. Why use this crutch of putting the message variable filled by functions exception into exception object attributes only to convert them back to message output?
I prefer [KISS|http://en.wikipedia.org/wiki/KISS_principle].
Regards,
Clemens

Similar Messages

ENQUEUE and Class-based Exceptions

Hi,
If I use the ENQUEUE Function module in a method which also raises class-based exceptions, I'd like to be able to raise equivalent class-based exceptions which map to the standard ENQUEUE function module exceptions.
Normally I'd simply propogate the FM exception by calling MESSAGE ... RAISING and then raise my own exception with the message that the ENQUEUE FM returned in sy-msg* etc.
But you can't have normal exceptions and class-based ones in the same method interface. Does anyone know if there's a SAP standard CX exception which has all the same messages and parameters in it so that we can raise the relevant class-based exception in the method after an ENQUEUE fails?
Thanks
Paul

Hello Paul,
I am not sure whether I understand your problem correctly, so please excuse me if I am completely off track
I assume you want to transport the information that is normally stored in sy-msg variables via class-based exceptions.
If you define your own exceptions, you can add attributes to the exception class. Any attributes, basically. I did something along this line by adding all relevant fields (message class, type, number, the four variables) as attributes to my exception class. Then, if you raise an exception with RAISE EXCEPTION TYPE <yourExceptionClass> and you use, for example, drag-and-drop from SE80 or the pattern feature for that, in the EXPORTING part of the statement you can fill these fields. As they are public fields, any method catching your exception can look into these and figure out what went wrong with the ENQUEUE.
Hope this helps (if I understood your question right)
Joerg

How to store a class-based exception as container element?

Hello,
In a BO type method, there are situations where unexpected class-based exceptions can occur, I handle them with TRY ... CATCH ... ENDTRY.
If such an error occurs, my BO type method also returns a BO type method exception using a return code (as usually).
1) Now, my question is how can I store the exception instance in the task container ? (so that to get more information about what happened... it is an unexpected error as I said)
Note that my question may apply to any class instance.
2) To achieve this, I have an idea but not sure if it's realistic (maybe the question is not realistic too ). I'll create a new BO type ZOOINSTANC with string attribute containing the serialized instance, with a method to display it.
Example how it could work, in my BO type method (it returns EXCEPTION parameter of type ZOOINSTANC):
TRY.
CATCH cx_root INTO lo_exc.
    DATA l_exc TYPE string.
    CALL TRANSFORMATION id
        SOURCE oo = lo_exc
        RESULT XML l_exc.
    DATA l_bor_zooinstanc TYPE swc_object.
    swc_create_object l_bor_zooinstanc 'ZOOINSTANC' ''. "no key
    swc_set_property l_bor_zooinstanc l_exc.
    swc_set_element container 'EXCEPTION' l_exc.
    exit_return 1001 '' '' '' ''.
ENDTRY.
One important issue is that I don't know any API to display the instance :-p
Do you have any ideas, advices, ... ?
Thx
sandra

Hi Mike, thank you for your answer, and sorry for the delay.
> I'd rather go with the idea of returning the error details in a structured format that you can view in the container
Yes, but that's the issue as I don't know which exceptions can be triggered, as I'd like to handle all exceptions.
> I'd also ask why it's necessary to use BOR for this?
When a BOR method fails, I want technical support to have all the details of the error, not only a generic error message. It's why I want to store the exception in the workitem container, and be able to display it later.
> It's obviously your own development, so why not use classes. Subclasses of CX_BO_ERROR are recognised by workflow and you can even bring a proper message back to the WF log. There's also some info on this in the second edition of the WF book.
I did a test using demo workflow WS56400159 ("absence"), where I forced CX_BO_ERROR right after SWX_FORMABS_CREATE call in CL_SWF_FORMABSENC / CREATE method, but it seems that only the short text of the exception is kept.
So, I'm a little disappointed to see that we have a great exception "tool" with class-based exceptions, but only the last text is kept in the system! That would have been great to be able to store the whole information (the attributes, and the whole bunch of cascading exceptions (PREVIOUS attribute), instead of only a simple text).
sandra

Where-used list for class-based exception texts

G'Day,
With traditional exceptions, one can look at a message, go to SE91 and do a where-used for that particular message. This is not possible with ZCX classes, a where-used can be done for the entire class but there doesn't seem to be a way to find where individual exception texts are raised.
Now whilst exception classes do offer the possiblity of a far better structuerd approach that reduces the need for a where-used in first place, this is still a shortcoming of exception classes... or is it? (or am I missing some other way to search for it?)
Cheers,
Mike

D'Oh! That one was so obvious that I was blinded by it
(Believe it or not I've been using ex. classes for some time!)
However it still leaves another issue (which was actually the one that sparked this debate here in the office): In the old message concept it was far easier to navigate from an error to find the offending code. One could click on a message, see the message class/ID, drop into SE91 and (provided the where used is small enough) go straight to the offending code via a where-used.
Unless class-based exceptions are caught and re-raised as an old MESSAGE statement with a message number, this is not so simple anymore. Or is it?
Thanks,
Mike

How do Standard class based exceptions understand an exception?

Dear All,
Can any one explain how does the standard class based exceptions understand and identify the specific exception. For example CX_SY_ZERODIVIDE is an exception class we use to catch the divide by zero exception. How does the class understand it. To clear my point please refer the code below
data: v1 type i,
v2 type i.
try.
v2 = v1 / 0.
catch CX_SY_ZERODIVIDE.
The above code will work and an exception will be handled properly. But how??
suppose if i write..
try.
v1 = Apple
catch CX_SY_ZERODIVIDE.
it obviously doesnt work.
so my point is how does an exception class understand the exception?
I have very poor knowledge about it, i have checked the class CX_SY_ZERODIVIDE and its methods. There is no code in it. .
Any help would be greatly appreciated.
Thanks and Regards,
Abdullah.

1) You can write your own log class. Call the log method from your catch
2) Upgrade to JDK1.4.0 and you can use the Logger function
3) Check jakarta for log4j

Working with class based exception and dynamic method calls

Hi Gurus,
we just changed out ERP from EHP6 to EHP7.
Since we did so we are facing an issue with an Z-Report we are using quite often.
This reports looks up Workitems and executes the according methods so that we can go into debugging if we were facing any problems or errors.
since the EHP Upgrade this statement has problems:
data: lt_parmbind type abap_parmbind_tab, lt_excpbind type abap_excpbind_tab, lo_runtime type ref to object. call method lo_runtime->(iv_cls_method) parameter-table lt_parmbind exception-table lt_excpbind.this CALL METHOD Statement has Problem with the Exception Table. We are quite often getting DYN_CALL_METH_EXCP_NOT_FOUND short dumps with Exception "CX_SY_DYN_CALL_EXCP_NOT_FOUND".
The system has problems handling the content of lt_excpbind. if i clear this table the CALL METHOD statement works fine.
AS an example we are trying to call /IDXGC/CL_PD_PROCESS_STEPS-->CREATE_DATA. This method has 2 exceptions
/IDXGC/CX_PROCESS_ERROR
Process Layer Exception
CX_BO_TEMPORARY
Temporary Business Exception
The Content of LT_EXCPBIND is
INDEX
NAME
VALUE
2
/IDXGC/CX_PROCESS_ERROR
1
2
CX_BO_TEMPORARY
2
From my point of view the Problem ist, that they are marked as "class based". I think so because if you looked up the SAP Help for the EXCEPTION-TABLE Statement it is written that is statement only works for none-classbased exception.
I think that restriction is quiet clear. But what i am wondering about is.. that restriction also exists for EHP6. And in EHP6 it work. Does anyone know why? Or how i can change me CALL METHOD Statement that i will work again?
Best Regards
Udo

Class-based exceptions must be caught using try/catch statement.
Calling dynamically a method catchable exceptions are:
CX_SY_DYN_CALL_EXCP_NOT_FOUND
CX_SY_DYN_CALL_ILLEGAL_CLASS
CX_SY_DYN_CALL_ILLEGAL_METHOD
CX_SY_DYN_CALL_PARAM_MISSING
CX_SY_DYN_CALL_PARAM_NOT_FOUND
CX_SY_REF_IS_INITIAL
Anyway catching cx_root (as shown by Matthias) will catch everything is catchable.

Class based exception handling

Hi everyone....
I am new to object oriented abap.
I would like to know more about exception handling using classes.
please provide some good material or links on the topic?
Points will be rewarded.......

hi,
Download the PDF from here.
http://www.esnips.com/doc/6d16a298-9227-4d32-acf1-e91164c89daf/3-ABAP-Objects(P283)
Follow this link too for tutorials.
http://www.****************/Tutorials/OOPS/MainPage.htm
Hope this helps, Do reward.
Edited by: Runal Singh on Mar 14, 2008 3:28 PM

Catch class based exceptions

hi
i am calling a outbound proxy class from a inbound proxy class. when i dragged the ourbound proxy the below code is inserted by system directly.
TRY.
CALL METHOD oref1->SEND_OUT
EXPORTING
    OUTPUT = output
CATCH CX_AI_SYSTEM_FAULT .
ENDTRY.
i want to know the difference between writing just
CATCH CX_AI_SYSTEM_FAULT .
and
CATCH CX_AI_SYSTEM_FAULT . into objref. where objref refers to exception class CX_AI_SYSTEM_FAULT .
how does the system behave in either of the case if exception is raised.
thanks

In both cases, no short dump is generated, because the exception is caught. However, no info about the actual error can directly be retrieved like is done in the following example.
DATA: lv_message TYPE string,
      lr_error TYPE REF TO cx_sy_zerodivide,
      y TYPE i VALUE 10,
      x TYPE i.
TRY.
    x = y / 0.
CATCH cx_sy_zerodivide INTO lr_error.
    lv_message = lr_error->get_text( ).
ENDTRY.
But this will only be of interest, when you want to determine the error. If the catch is part of another TRY ENDTRY block, the error is navigated upwards the chain.
Hope this was somehow helpful.

Error Handling and Error Messages

I already posted this in the java programming forum, but I dont think the people responded understand patterns, or what I was asking. Here is my original post, for reference I am not asking how to catch and exception, or how to display an error, I am asking about the pattern implementation.
I am currently in the process of creating my Exception model for my program, and I have a question about error messages. I was reading the book "Effective Java Programming" which deals with patterns and it states that an exception should state the error and report information on all relavent states. For instance If you have a class the modeled some sort of memory array, and an access was requested to a block of memory outside the array you should throw an ArrayIndexOutOfBoundsException("Index:" + index + ", start:" + 0 + ",end:" + Array.length) or if you made your own MemoryAddressOutOfBoundsException(same as above) which when printed should read
ArrayIndexOutOfBoundsException: Index:-1, start:0, end:0
stack trace
The pertinate information is the index, start index, and end index.
The book CLEARLY states as an industry design pattern that exceptions weather checked or unchecked should not contain user error messages. For instance with the above example one might be tempted to use this as the exception message: "The memory addres index is not a valid memory address." This is clearly a user error message.
So heres my situation. In a gui environment (command line console not visible) how do you generated a user error message, letting the user know that an internal exception has occured.
In my previous implementation of my project, I used the exception message the user error message and just reported the message on a dialog. I have heard of people using error catalogs, which centrallizes all the error messages into a single class or file.
I was wondering if and Error catalog was a good approach, how I might go about implementing one, and if not how do you the community handle user error messages.

class MyAppErrors {
   public static final int FILE_NOT_FOUND = 0;
   public static final int DIR_NOT_FOUND = 1;
   public stat final String[] errMsgs = {
      "The file was not found.",
      "The directory was not found.",
   public String getErrMsg( int n ) { return errMsgs[n]; }
[\code]
And a nicer version would allow the calling code to pass in a substring so you could say "The file 'somename.ext' was not found."

Class based error handling

Hi evrybody,
i'd like to implemt some own errorclasses, but i cand find anything about the namespace to use. Am i right that evry class based error handling must start with cx? So which namespace is for customoers?
cu
Rainer

Hi Rainer,
if you already have a regulation for class names, just replace CL by CX and apply them accordingly.
For example, if your classes are named ZCL_... or YCL_..., your exception classes will be named ZCX... or YCX_..., respectively.
See T100 message OO 145 for the details. Here is the German version:
+Kurztext
Klassenname &1 ist für den gewählten Klassentyp nicht zulässig
Diagnose
Namenskonvention für Klassen :
Für eine persistente Klasse ist der Präfix 'CL_' bzw. Namensraum+Präfix 'CL_' ( z.B. 'ZCL' oder '/NAMESPACE/CL_' ) vorgeschrieben.
Für eine Exceptionklasse ist der Präfix 'CX_' bzw. NamensraumPräfix 'CX_' ( z.B. 'ZCX' oder '/NAMESPACE/CX_' ) vorgeschrieben.
Best regards,
Thorsten Franz

ABAP OO Exception Class based processing

Hi there,
Note: In going forward with SAP WAS 6.20, one can handle exceptions using exception-class based handling using RAISE EXCEPTION TYPE abc and then CATCHing it in TRY/ ENDTRY block. Standard method like GET_TEXT can be used to get the text of the exception raised.
Question: If I know the EXCEPTION CLASS and Exception ID of my exception class, is it possible to get the exception text directly from the repository without creating the exception class object?
E.g. Exception class is CX_MY_SECRET_ID
and Exception IDs for this class are
ID_NOT_FOUND,
ID_EXPIRED,
ID_IS_FOR_SPECIAL_ACCESS
E.g. last two exception IDs are my warning conditions, and if such conditions are encountered, all I want to do is collect the warning messages. Whereas first exception ID condition (i.e. ID_NOT_FOUND) is an error for me, in which I have pass the exception back to the calling program. E.g. the source code is like this:
PERFORM.......
If ID is not found
   RAISE EXCEPTION TYPE ZCX_MY_SECRET_ID
           EXPORTING TEXT_ID = 'ID_NOT_FOUND'.
else if ID has expired
   ...... then do I have to first raise the exception like raised above and CATCH it before I can get its text? or can I get the exception text directly without raising the exception first (as I know i have to retrieve the text of ZCX_MY_SECRET_ID exception class for Exception ID ID_EXPIRED)?
In other words, if a certain condition is warning for my program, can I get the condition for that exception (from exception class based on exception class name and exception ID), or do I have to RAISE it first explicitely and then CATCH it immediately and execute GET_TEXT to get its text?
Thanks very much!

Hello Chetan,
in basic the raise exception type xxx creates an exception object and aborts normal execution continuing in the enclosing try block.
The Abap runtime contains some optimizations regarding the try block has an 'into xxx' clause. But as long you use the same exception you cant take benefit from this.
As far I understand your problem you have two different kind of severities. So I would use 2 differnt exception classes (maybe derived from a common parent type, or one from the other).
So both the code which throws the exception and the one which catches it are aware of the different semantic.
Kind Regards
Klaus

B2BStarter - Exception Error -: AIP-50014: General Error

i have configured 2 trading partners and then the communication between them is through RNIF. The communication was fine and i was receving purchase order and ack properly. then i added a JMS queue and configured the IDC for JMS and now when i restart the B2B server i get the error:- B2BStarter - Exception Error -: AIP-50014: General Error
Please help
Edited by: user10552310 on Nov 6, 2008 11:35 PM

Hi,
Please make sure the following steps,
if you are using weblogic JMS,
1. Add the weblogic.jar in the classpath by following the below instructions:
a. copy the weblogic.jar in $ORACLE_HOME/ip/lib/ folder
b. go to the $ORACLE_HOME/opmn/conf/ folder
c. update the opmn.xml (take the backup of opmn.xml)
c.1 add this line <variable id="CLASSPATH" value="$ORACLE_HOME/ip/lib/weblogic.jar" append="true" />
after <variable id="CLASSPATH" value="$ORACLE_HOME/ip/lib/maverick-all.jar" append="true" /> line
d. restart the B2B
2. make sure the below properties are set
polling interval <polling Interval time>
Destination Provider Properties java.naming.factory.initial=weblogic.jndi.WLInitialContextFactory;java.naming.security.credentials=weblogic;java.naming.security.principal=weblogic;java.naming.provider.url=t3://<IP Address>:<Port>/
isTopic false
Connection Factory Location <Connection Factory Name>
Message Type bytes
Factory Provider Properties java.naming.factory.initial=weblogic.jndi.WLInitialContextFactory;java.naming.security.credentials=weblogic;java.naming.security.principal=weblogic;java.naming.provider.url=t3://<IP Address>:<port>/
In case of AQ based JMS please follow the below thread,
Re: Creating JMS internal delivery channel ?
Regards
Nandagopal.S

How to handle the plsql error occuring in the exception block

We know how to handle exceptins which occur in BEGIN block.
But am unable to catch the exception in the exception block. Am writing an erroeneous code so that the control will go to exception block and there is also one plsql error, but am unable to handle that error, it's returning the error to the calling environment.
DECLARE
cnt NUMBER(5):=0;
BEGIN
select 'debalina' INTO cnt from dual;
DBMS_OUTPUT.PUT_LINE(to_char(cnt));
EXCEPTION
WHEN invalid_number THEN
DBMS_OUTPUT.PUT_LINE('error has occured inside begin block');
cnt:='deba';
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('error has occured inside begin block');
END;
please suggest me how to catch this exception?

Hi,
DECLARE
cnt NUMBER(5):=0;
BEGIN
select 'debalina' INTO cnt from dual;
DBMS_OUTPUT.PUT_LINE(to_char(cnt));
EXCEPTION
WHEN invalid_number THEN
DBMS_OUTPUT.PUT_LINE('error has occured inside begin block');
cnt:='deba';
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('error has occured inside begin block');
END;
First of all your namee exception which you have posted i.e invalid_number itself is wrong.
You need to use named exception VALUE_ERROR for catching the exception in the main block.
SQL> DECLARE
2 cnt NUMBER(5):=0;
3 BEGIN
4 select 'debalina' INTO cnt from dual;
5 DBMS_OUTPUT.PUT_LINE(to_char(cnt));
6 EXCEPTION
7 WHEN Invalid_number THEN
8 DBMS_OUTPUT.PUT_LINE('error has occured inside main block');
9 end;
10 /
DECLARE
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: character to number conversion error
ORA-06512: at line 4
SQL> DECLARE
2 cnt NUMBER(5):=0;
3 BEGIN
4 select 'debalina' INTO cnt from dual;
5 DBMS_OUTPUT.PUT_LINE(to_char(cnt));
6 EXCEPTION
7 WHEN VALUE_ERROR THEN
8 DBMS_OUTPUT.PUT_LINE('error has occured inside main block');
9 end;
10 /
error has occured inside main block
PL/SQL procedure successfully completed.Your doubt regarding catching the exception in exception block, you can execute as below, by nesting a Begin block inside the exception block itself.
SQL> DECLARE
2 cnt NUMBER(35):=0;
3 BEGIN
4 select 'debalina' INTO cnt from dual;
5 DBMS_OUTPUT.PUT_LINE(to_char(cnt));
6 EXCEPTION
7 WHEN Value_error THEN
8 DBMS_OUTPUT.PUT_LINE('error has occured inside main block');
9 Begin
10 cnt:='deba';
11 Exception
12 WHEN OTHERS THEN
13 DBMS_OUTPUT.PUT_LINE('error has occured inside exception block');
14 End;
15 END;
16 /
error has occured inside main block
error has occured inside exception block
PL/SQL procedure successfully completed.Hope your doubt is clear.
Twinkle

An exception of class OutOfBounds Exception was not handled

When starting a vodafone application for my Merlin 3g card I get a failure message: "An exception of class OutOfBounds Exception was not handled. Application must shut down"
I unintentionally deleted an info.plist file when trying to get rid of Apple´s latest WWAN update. Could this be the reason? And how to get back the info.plist file?
Thank you
MacBookPro Mac OS X (10.4.8)

I finally managed to find an Info.plist on the web. I managed to copy it to the IOSerialFamily.kext file and restarted.
Upon startup I was told that the IOSerialFamily.kext was not installed correctly and cannot be used.
This is the content I used:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>IOSerialFamily</string>
<key>CFBundleGetInfoString</key>
<string>Apple Computer, Inc 2005-01-12 IOKit Serial Port Family</string>
<key>CFBundleIdentifier</key>
<string>com.apple.iokit.IOSerialFamily</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>IOKit Serial Port Family</string>
<key>CFBundlePackageType</key>
<string>KEXT</string>
<key>CFBundleShortVersionString</key>
<string>9.0</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>9.0.0d30</string>
<key>IOKitPersonalities</key>
<dict>
<key>IOSerialBSDClient</key>
<dict>
<key>CFBundleIdentifier</key>
<string>com.apple.iokit.IOSerialFamily</string>
<key>IOClass</key>
<string>IOSerialBSDClient</string>
<key>IOProbeScore</key>
<integer>1000</integer>
<key>IOProviderClass</key>
<string>IOSerialStream</string>
<key>IOResourceMatch</key>
<string>IOBSD</string>
</dict>
<key>IOSerialBSDClientSync</key>
<dict>
<key>CFBundleIdentifier</key>
<string>com.apple.iokit.IOSerialFamily</string>
<key>IOClass</key>
<string>IOSerialBSDClient</string>
<key>IOProbeScore</key>
<integer>1000</integer>
<key>IOProviderClass</key>
<string>IOSerialStreamSync</string>
<key>IOResourceMatch</key>
<string>IOBSD</string>
</dict>
</dict>
<key>OSBundleCompatibleVersion</key>
<string>1.0.4</string>
<key>OSBundleLibraries</key>
<dict>
<key>com.apple.kpi.bsd</key>
<string>8.0.0</string>
<key>com.apple.kpi.iokit</key>
<string>8.0.0</string>
<key>com.apple.kpi.libkern</key>
<string>8.0.0</string>
<key>com.apple.kpi.mach</key>
<string>8.0.0</string>
<key>com.apple.kpi.unsupported</key>
<string>8.0.0</string>
</dict>
</dict>
</plist>
Any help what I did possibly wrong?

How to handle ADF_FACES Errors/Exceptions and display customized message.

Hi All,
My question here is, 
Is there any way to handle the validation/PPR kind of run time exceptions/errors. I have tried to handle these errors by extending the lifecycle and overridden the reportErrors method. But this method is being called in the PREPARE_RENDER phase. But the exception is happening in the JSF_PROCESS_VALIDATIONS phase. I have tried to handle the exceptions in the custom PagePhaseListener. But these exceptions could not be handled in the custom PagePhaseListener.
I would like to display a customized message to the user instead of displaying the PPR exception.
The details are given below.
I have a use case related to the security like if there is a drop down list in a page. Drop down list is having a af:validateRegExp component which allows only alphabets. Dropdown is populating alphanumeric values.
One option is selected in the drop down list and submitted the value with the help of the commondbutton.
With the help of some tools, we modified the submitted value(index of the list submitted) to some alphabets.
Its throwing some validation exception. Some of the statements are given below.
<UIXRegion> <_warn> Error processing viewId: /Validate_TF/validate URI: /validate.jsff actual-URI: /validate.jsff.
java.lang.NumberFormatException: ADF_FACES-60034:SelectOne could not convert index 0asd
<LifecycleImpl> <_handleException> ADF_FACES-60098:Faces lifecycle receives unhandled exceptions in phase PROCESS_VALIDATIONS 3
<RegistrationConfigurator> <handleError> ADF_FACES-60096:Server Exception during PPR
displaying a popup dialog with error message like:
ADF_FACES_60034:could not convert index
ADF_FACES_60097:server exception
ADF_FACES_60096: some exception occurred during PPR,
I don't want to show these kind of messages to user. Please suggest me whether is it possible or not.
Thanks in advance.
Regards,
SatishRaj Dasari.

Hi,
Try reading one of Franks post :
[url https://blogs.oracle.com/jdevotnharvest/entry/extending_the_adf_controller_exception_handler]
Nigel

Handling general errors via class based exceptions

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