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| Extracting meaningful info from ExceptionList |
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| sudhanshus |
 Posted: Tue Jan 28, 2014 12:34 am Post subject: Extracting meaningful info from ExceptionList |
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Novice
Joined: 28 Oct 2013
Posts: 19
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Hi,
I have a java compute node that has following code in the catch block of evaluate method:-
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| throw new MbUserException(this, "", "evaluate()", e.toString(), "", null); |
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Now there's a error handler subflow that extracts the meaningful out of this ExceptionList. Like where the exception ocurred, cause of the exception, type of the exception etc.
When I see ExceptionList, I don't find any definite pattern so that my error handler code fetches the relevant information from the exception list. Be it exception arising in java compute node or broker node.
It's a generic issue but after spending a lot of time doing googling, I couldn't find any conclusive procedure.
Please help.
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| Esa |
| Posted: Tue Jan 28, 2014 1:06 am Post subject: |
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Grand Master
Joined: 22 May 2008
Posts: 1387
Location: Finland
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| If you want to capture meaningful info you should serialise the stackTrace and throw it instead of e.toString(). |
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| sudhanshus |
| Posted: Tue Jan 28, 2014 1:28 am Post subject: |
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Novice
Joined: 28 Oct 2013
Posts: 19
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| Esa wrote: |
| If you want to capture meaningful info you should serialise the stackTrace and throw it instead of e.toString(). |
Done. Thanks.
| Code: |
throw new MbUserException(this.getClass().getName(), "PrepareForLogging evaluate", JCNodeMessages.MESSAGE_SOURCE,
JCNodeMessages.JCEX, "exception",new String[] {e.getMessage(), id, stackTraceToString}); |
The problem i am having is the location. I can see my stacktrace in one of the Insert node Text value. What's the location this stacktrace text would be populated in all the cases? Is there a way through which we could dictate how this exception list values and its locations are populated? |
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| dogorsy |
| Posted: Tue Jan 28, 2014 2:50 am Post subject: |
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Knight
Joined: 13 Mar 2013
Posts: 553
Location: Home Office
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| sudhanshus wrote: |
| Esa wrote: |
| If you want to capture meaningful info you should serialise the stackTrace and throw it instead of e.toString(). |
Done. Thanks.
| Code: |
throw new MbUserException(this.getClass().getName(), "PrepareForLogging evaluate", JCNodeMessages.MESSAGE_SOURCE,
JCNodeMessages.JCEX, "exception",new String[] {e.getMessage(), id, stackTraceToString}); |
The problem i am having is the location. I can see my stacktrace in one of the Insert node Text value. What's the location this stacktrace text would be populated in all the cases? Is there a way through which we could dictate how this exception list values and its locations are populated? |
You need to look for the UserException in the tree and get the data from there. The exception list tree structure is explained here:
http://pic.dhe.ibm.com/infocenter/wmbhelp/v9r0m0/topic/com.ibm.etools.mft.doc/ac00540_.htm
and examples on how to access the exception list tree using esql:
http://pic.dhe.ibm.com/infocenter/wmbhelp/v9r0m0/topic/com.ibm.etools.mft.doc/ac16830_.htm |
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| Esa |
| Posted: Tue Jan 28, 2014 3:19 am Post subject: |
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Grand Master
Joined: 22 May 2008
Posts: 1387
Location: Finland
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| sudhanshus wrote: |
The problem i am having is the location. I can see my stacktrace in one of the Insert node Text value. What's the location this stacktrace text would be populated in all the cases? Is there a way through which we could dictate how this exception list values and its locations are populated? |
Yes. You dictate it with your code. In your code example you are dictating that the stackTrace is to be put in the third Insert.
But why put a dummy "exception" in Exception.Text when you can put the stackTrace there directly:
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throw new MbUserException(this.getClass().getName(), "PrepareForLogging evaluate", JCNodeMessages.MESSAGE_SOURCE,
JCNodeMessages.JCEX, stackTraceToString",null); |
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