U++ forum: Welcome to the forum

Mon, 11 January 2010 13:57

mdelfede
Messages: 1307
Registered: September 2007

Ultimate Contributor

I need to save/restore a class hyerarchy to/from stream; the result should be something like that :

<Pages>
    <Page class = "myclass">
    ....here object content, as per Xmlize
    </Page>
</Pages>

I already have a class factory able to create class by name, but I don't know how to put all together. In particular, I need to work with streams, not files; the code should be able to read/write from the current byte of stream, and leave it positioned on next data.
Assuming 'Page' is my hierarchy base class, it should be :

Page *CreatePage(const char *className);  <== DONE
Array<String> GetAvailablePages(void);    <== DONE

class page
{
    protected:
        virtual void Xmlize(XmlIo xml) = 0;  <== EASY, I think
    public:
        static Page *LoadStream(Stream &s);  <== ???
        virtual bool SaveStream(Stream &s);  <== ???

}

Any hint on how to do it ?

Ciao

Max

Report message to a moderator