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Re: Better way to catch Class::DBI constraint failures?by tomhukins (Curate) |
on Aug 12, 2004 at 16:17 UTC ( [id://382338]=note: print w/replies, xml ) | Need Help?? |
I encountered this problem a few months ago and spent a little time investigating. To understand what's going on, take a look at the source for Class::DBI's add_constraint method. Constraints are just before_set triggers that, on failure, croak with the error message you observed. So, if you wrote a before_set_namespace trigger, you could behave as you choose on error. The particular problem I encountered was that I wanted to list all failed constraints. I used a combination of triggers and two layers Exception::Class events. I apologise if this seems a little vague: I don't have access to the code any more and don't recall exactly what I did. Oh, and of course Perl modules can be cool. Distrust anyone who claims otherwise.
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