[xsd-users] Problems with generated schema

[ope]

Hi Boris,

> You get these errors because XML Schema validation is enabled by
> default and the parser cannot find the schema since none is
> specified in the instance or elsewhere. You have three options:
> 
> 1. Disable validation.
> 
> 2. Add schemaLocation attributes to your XML documents.
> 
> 3. Programmatically specify the schema location.
> 
> These options are discussed in more detail in Section 2, "Validaion
> and Parsing" of the FAQ:
> 
> http://www.codesynthesis.com/projects/xsd/documentation/cxx/tree/faq/#2

I did try the 3rd Option without success.

---8<---
    class metalink_parser
    {
    private:
        typedef std::vector<std::string> metalink_files_t;

    public:
        metalink_parser();
        metalink_parser(const std::string& file);

    public:
        void append(const std::string& file);
        void load();

    private:
        metalink_files_t 		m_metalink_files;
        std::auto_ptr<metalink::metalinkType>	m_metalink;
        xml_schema::properties 		m_metalink_props;
    };

---8<---
metalink_parser::metalink_parser() {
    m_metalink_props.schema_location (
        "http://www.metalinker.org/",
        "file:///home/ope/Projects/cpp/test/schema/metalink.xsd");

    m_metalink_props.no_namespace_schema_location (
        "file:///home/ope/Projects/cpp/test/schema/metalink.xsd");
}

metalink_parser::metalink_parser(const std::string& file){
    m_metalink_files.push_back(file);
}

void metalink_parser::append(const std::string& file) {
    m_metalink_files.push_back(file);
}

void metalink_parser::load() {
    assert(m_metalink.get() == 0);

    // TODO: a lot of checks
    const std::string metalink_file = m_metalink_files.front();

    try {
        // take ownership
        //m_metalink = metalink::metalink(metalink_file,
xml_schema::flags::dont_validate);
        m_metalink = metalink::metalink(metalink_file, 0, m_metalink_props);

        metalink::filesType::file::const_iterator
first(m_metalink->files().file().begin());
        metalink::filesType::file::const_iterator
last(m_metalink->files().file().begin());

        for (; first != last; ++first) {
            cout << *first;
        }
    }
    catch (const xml_schema::exception& e) {
        cerr << e << endl;
    }
}
--->8---

If I disable validation (1st Option) no output is performed.

As you may see, these are my first steps in Xerces and XSD.

Thanks
Olaf