Hi,
I am able to insert the stylesheet tag from inside a constructor of my new derived class.
Please find below the whole program.
But, I am still getting an error :
terminate called after throwing an instance of 'std::bad_cast'
what(): std::bad_cast
Aborted (core dumped)
on the statement :
xa << BOOST_SERIALIZATION_NVP(e);
in the code below.
The statements :
xa.putTag ("TESTING_XMLCLASS");
xa << BOOST_SERIALIZATION_NVP(tmp);
oa << BOOST_SERIALIZATION_NVP(e);
work as expected.
Can you please let me know what could be the reason for this?
Regards,
Girish
# include <iostream>
#include <fstream>
#include <string>
#include
#include
#include
#include
#include
#include
using namespace std;
using namespace boost::archive;
struct EMPLOYEE
{
int id;
string name;
friend class boost::serialization::access;
template<class Archive> void serialize(Archive & ar, const unsigned int /* file_version */)
{
ar << BOOST_SERIALIZATION_NVP(id);
ar << BOOST_SERIALIZATION_NVP(name);
}
};
class XMLArchive : public xml_oarchive_impl
{
public :
XMLArchive (ostream &os) : xml_oarchive_impl(os, 0)
{
os.seekp (58);
string styletag = "?xml-stylesheet type=\"text/xsl\" href=\"XSLTFile.xsl\"?>\n";
string line1 = "<!DOCTYPE boost_serialization>\n";
string line2 = "\n";
string buffer = styletag + line1 + line2;
os << buffer;
os.flush ();
}
void putTag (string tagname)
{
string tag_str = "<";
tag_str = tag_str + tagname + ">\n";
os << tag_str;
}
~XMLArchive () {}
};
int main (void)
{
ofstream ofs ("XMLresult.xml");
XMLArchive xa(ofs);
// boost::archive::xml_oarchive oa(ofs);
xa.putTag ("TESTING_XMLCLASS");
string tmp = "TMPTMP";
xa << BOOST_SERIALIZATION_NVP(tmp);
struct EMPLOYEE e;
e.id = 101;
e.name = "James Bond";
xa << BOOST_SERIALIZATION_NVP(e);
// oa << BOOST_SERIALIZATION_NVP(e);
return 0;
}
--- On Thu, 2/18/10, Robert Ramey wrote:
From: Robert Ramey
Subject: Re: [Boost-users] XML Serialization: Putting Stylesheet tag inside XMLfile
To: boost-users@lists.boost.org
Date: Thursday, February 18, 2010, 5:27 PM
File XSLTFile.xml contain stylesheet info.
* So, how is it possible to put a stylesheet related statement
just after the 1st statement?
* Another query is, how to change the the tag name
"boost_serialization" to something else?
You should be able to derive your new class from xml_archive_impl...
There you can the initialization / windup functions. There is/was
and outdated example of how to do this in the documentation
using portable binary archive as an example. I don't know if
it's still in there.
Robert Ramey
