Coding a stack trace into LotusScript libraries eases error handling

• Rodney Rear
• Published: 10 Feb 2009

Once I became familiar with Java's stack trace information, I found that receiving the Lotus Notes error message: "Object Variable Not Set" no longer helped me properly trap and manage errors.

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I've found a way to code a stack trace into LotusScript libraries and agents. The trick is that you must have an error trap in every sub, function or method to capture useful information. Then, the code will build the stack as each error trap is tripped.

Following is output from my example:

Error: method ExampleClass.setup() 
has not been implemented.
 at [Exampleclass.New( ): 11]
 at [getObject('abstract').Getexampleobject: 8]  
 at [ExampleAgent.Initialize( ): 13]

(Click on code for enlarged view and script download.)

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