[xsd-users] Customize sequence and optionals

[WEBER Stefan]

Hi,
 
so far I could successfully customize the mapping to suit my needs. Now,
I ran into problems with optionals and sequences.
 
In my schema, the reason to make some elements optional is mostly for
convenience of the user writing the XML, such that the user does not
have to explicitly specify the element in case he wants to use the
default value anyway. (e.g. for configuration data) Now I would like to
change the optional type such that whenever get() would return a NULL
pointer, I create an element of the default value and return the newly
created element.
 
In other words, instead of having a
 
typedef xsd::cxx::tree::optional<MyType> MyTypeOptional
 
I would rather provide a custom MyTypeOptional. Is this possible?
 
A similar thing for the sequences:
 
instead of having generated a
 
typedef xsd::cxx::tree::sequence<MyType> MyTypeSequence
 
I would rather provide a MyTypeSequence myself. The reason I want to do
that is that I would prefer to have a vector<MyType> as return value
rather than sequence<MyType> for sequences (because an 3rd party API
expects a const vector& and providing a custom sequence would save a lot
of explicit conversions).
 
Thanks,
 
Stefan

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