[xsd-users] Error Logging

[Boris Kolpackov]

Hi Ryan,

Prather, Ryan C SSgt USAF AFSPC SYAG/SED <Ryan.Prather at peterson.af.mil> writes:

> Is there a function that will convert the exception object to a STL
> string object?

Yes, you can use the std::ostringstream stream for that:

#include <sstream>

catch (const xml_schema::parsing& e)
{
  std::ostringstream ostr;
  ostr << e;
  std::string str = ostr.str ();
}


> The function just takes two arguments an integer (error code) and
> string (error message).  The string can be no longer than 60
> characters so I need to find a way to reformat the exceptions that
> XSD provides to something that is 60 characters or less.

I don't think you can do this without potentially loosing some
information. The xml_schema::parsing exception contains a list
of parsing errors and warnings. The above code will save them
all at once into the string. Instead you can iterate over them
and log one at a time:

catch (const xml_schema::parsing& e)
{
  const xml_schema::diagnostics& d = e.diagnostics ();

  for (xml_schema::diagnostics::const_iterator i = d.begin ();
       i != d.end (); ++i)
  {
    const xml_schema::error& er = *i;

    const std::string& msg = er.message ();
  }
}

For more information on the xml_schema::parsing, xml_schema::diagnostics
and xml_schema::error types see Section 7.3, "Error Handling" in the
C++/Parser Getting Started Guide (I assume you are still using the
C++/Parser mapping):

http://codesynthesis.com/projects/xsd/documentation/cxx/parser/guide/#7.3

Boris