Comments on: Moose with Rose::DB::Object. Roose? Morose? http://blogs.aarohan.biz/2009/05/07/moose-with-rosedbobject-roose-morose/ Writings on Linux, Perl and related topics from Aarohan Tech Fri, 30 Jul 2010 22:03:28 +0000 http://wordpress.org/?v=2.0.5 by: John http://blogs.aarohan.biz/2009/05/07/moose-with-rosedbobject-roose-morose/#comment-37709 Thu, 07 May 2009 12:20:34 +0000 http://blogs.aarohan.biz/2009/05/07/moose-with-rosedbobject-roose-morose/#comment-37709 One issue you may encounter is that both Moose and Rose::DB::Object define and rely on a method named meta(). (For the record, Rose::DB::Object had it first.) This means that you can't make a Rose::DB::Object-derived class that also inherits from Moose, and you can't make a Moose class that inherits from a Rose::DB::Object-derived class. What people usually do instead is use composition rather than inheritance. That is, make a Moose-derived class that "has a" Rose::DB::Object-derived object within it, rather than one that "is a" (i.e., inherits from) Rose::DB::Object. The reverse will also work: a Rose::DB::Object-derived object that "has a" Moose-derived object. Good luck! And don't forget about the Rose::DB::Object mailing list if you run into any problems: http://groups.google.com/group/rose-db-object One issue you may encounter is that both Moose and Rose::DB::Object define and rely on a method named meta(). (For the record, Rose::DB::Object had it first.) This means that you can’t make a Rose::DB::Object-derived class that also inherits from Moose, and you can’t make a Moose class that inherits from a Rose::DB::Object-derived class.

What people usually do instead is use composition rather than inheritance. That is, make a Moose-derived class that “has a” Rose::DB::Object-derived object within it, rather than one that “is a” (i.e., inherits from) Rose::DB::Object. The reverse will also work: a Rose::DB::Object-derived object that “has a” Moose-derived object.

Good luck! And don’t forget about the Rose::DB::Object mailing list if you run into any problems: http://groups.google.com/group/rose-db-object

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