I have a situation where I want control to return to the main script when an error occurs in an object. There the main script can decide how to deal with the error.

I have been enclosing object creation and method calls in the eval{...}; if ($@) {...} technique.

1.) Main creates Object A.

2.) Object A creates Object B.

3.) Object B creates Object C.

4.) An error occurs in Object C and Object C dies.

5.) Object B catches the error and logs it and dies.

6.) Control returns to Object A, but before Object A can test the $@ value the destructors for Object C and Object B are called in that order. The calls to the destructors wipe out the $@ value and Object A continues without processing the error in its "if ($@) {} block".

How can I improve my design here? Is it a bad practice to catch an error and then call die again?

There seem to be many approaches to the art of error handling. I am not sure of the best practice here. If an error occurs in Object C, I would like to destroy the chain of objects A-B-C, log their errors, and return to Main to process the error.

In reply to Error Handling in Object-Oriented Perl by hackdaddy

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