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MQSeries.net Forum Index » Workflow Engines - IBM MQ Workflow & Business Process Choreographer » Workflow Error Handling

Workflow Error Handling

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modene

Posted: Wed Apr 06, 2005 12:28 am Post subject: Workflow Error Handling

Newbie

Joined: 06 Apr 2005
Posts: 7
Location: South Africa

Hi, forum members
I am new to MQ Workflow.
I would like to know how we can handle errors in Workflow.
If an external application responds to a UPES with an error, how do we go about telling Workflow about the error message?
I assume that we must set a non-zero value in PROGRAMRC. But, the application is responding with a specific error message (30 characters). How do we tell Workflow to display this error message to the client?
Are there specific values that must be set in PROGRAMRC and what is their meaning? Is it integer only?
Is a there a relation between PROGRAMRC and _RC?

Regards
modene (apprentice)

Ratan

Posted: Wed Apr 06, 2005 8:25 am Post subject:

Grand Master

Joined: 18 Jul 2002
Posts: 1245

populate the error message into one of the o/p container members and map it back to i/p container.
Set _RC to non 0 and set the exit condition to _RC =0

this will create a workitem for the UPES activity if the exit condition fails.
Assign the UPES activity to a perticular user, so that all the failed activities will be on his worklist.

ProgramRC and _RC are the same.
_________________
-Ratan

hos

Posted: Thu Apr 07, 2005 5:45 am Post subject:

Chevalier

Joined: 03 Feb 2002
Posts: 470

Modene,

you need to use the <Exception> tag in your UPES response. You can only use valid MQWF return code values in your exception object (see chapter 33 in the Programming Guide). The errorReason().messageText() method uses the MQWF message catalog to create the error message.
You can pick any suitable message that takes one or more parameters and provide the parameter values via the
<Parameter> tag (see e.g. chapter 34 The General Error Message). In
general RC=1113 should be used for UPES exception messages.

For instance your error message could look like this:

<ActImplCorrelID>RUEAAAABALQABwAAAAAAAAAAAAAAAgAAAAEAs0ABAAAAAAAAAAAAAAACQQA
AAAEAtAALAAAAAAAAAABF</ActImplCorrelID>
<Exception>
<Rc>1113</Rc>
<Parameters>
<Parameter>any;application;specific;text</Parameter>
<Parameter> <null/> </Parameter>
</Parameters>
<MessageText></MessageText>
<Origin>Upes Framework</Origin>
</Exception>
</ActivityImplInvokeResponse>
</WfMessage>

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