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At 16:28 04/01/00 -0500, David Megginson <david@m...> wrote:
>John Aldridge <john.aldridge@i...> writes:
>
>> class QName {
>> public:
>> wstring ns () const; // http://www.w3c.org/1999/xhtml
>> wstring name () const; // p
>> wstring nsPrefix () const; // html
>> wstring prefixedName () const; // html:p
>>
>> bool operator== (const QName &rhs) const;
>> // ns & name both equal
>> private:
>> // Probably just a simple pointer to your internal data structures
>> };
>
>My biggest problem with this (and its Java equivalent) is figuring out
>how to handle equality: are two QNames with the same URI part and same
>local part equal? What if the prefix is different?
I'm sorry, I don't see the problem. The QNames are equal if ns() and
name() both match. The prefix is irrelevant. This is what I suggested in
my definition of the equality operator above.
if (qn1 == qn2) ...
just does the right thing. If some application really wants to compare the
prefixed name, it can always write:
if (qn1.prefixedName () == qn2.prefixedName ()) ...
I'm obviously missing something, since you and other knowledgable people
don't regard this as self evidently obvious -- can you explain the problem
to me, please?
--
Cheers,
John
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