#include <DbXml.hpp> virtual const unsigned char * XmlEventReader::getNamespaceURI() const
If the current event is StartElement or EndElement, return the namespace URI for the element.
            The XmlEventReader::getNamespaceURI method 
            may fail and throw  
                XmlException
        , encapsulating one of the 
            following non-zero errors:  
        
An error occurred during processing of an XmlEventReader object. Most likely the error is requesting state that is not valid in the context of the current event.