Re: Inherit XML::DOM::Document?

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Re^2: Inherit XML::DOM::Document? by braden (Novice) on Apr 06, 2006 at 08:50 UTC
`use XML::DOM; @ISA = qw( XML::DOM::Document );` [download] yields: `Global symbol "@ISA" requires explicit package name at lib/Literally +/Document.pm` [download] and `use XML::DOM::Document; @ISA = qw( XML::DOM::Document );` [download] yields: `Can't locate XML/DOM/Document.pm in @INC` [download] I'd like to do the normal thing for which one uses inheritance: extend existing functionality. The particular problem I'm trying to solve involves creating a DOM tree from scratch; while that's not directly related to my desire to use inheritance, it is another thing that the XML::DOM documentation doesn't make obvious (rather, it focuses on operating on a DOM tree constructed with the parser).	[reply] [d/l] [select]
Re^3: Inherit XML::DOM::Document? by herveus (Prior) on Apr 06, 2006 at 11:57 UTC
Howdy! The error message from your first snippet simply means that 'strict vars' is in effect, and you haven't told it that @ISA is ok. `use vars qw ( @ISA ); use XML::DOM; @ISA = qw(XML::DOM::Document);` [download] should compile fine. The current package will now be a subclass of XML::DOM::Document. Whether that acutally does what you want is a separate problem. yours, Michael	[reply] [d/l]
Re^4: Inherit XML::DOM::Document? by braden (Novice) on Apr 07, 2006 at 05:08 UTC
Ah, thanks. Presumably that would get me as far as the other problem: that I simply cannot inherit `XML::DOM::Document`.	[reply] [d/l]
Re^3: Inherit XML::DOM::Document? by Anonymous Monk on Apr 06, 2006 at 10:33 UTC
Looking at XML-DOM, XML::DOM::Document is a documentation module, consisting of POD only. You cannot inherit anything from in. Try XML::DOM as base class instead.	[reply]
Re^4: Inherit XML::DOM::Document? by braden (Novice) on Apr 07, 2006 at 05:06 UTC
Aha. I suspected something along those lines. I don't think inheriting from `XML::DOM` is what I want; the package I'm writing has the semantics of being a document. I probably don't want to use inheritance at all; and instead just contain a `XML::DOM::Document`. Thanks.	[reply] [d/l] [select]