This example shows how to handle the xsi:type attributes and substitution groups when they are used on root elements. For general coverage of XML Schema polymorphism handling in the Embedded C++/Parser mapping see the polymorphism example. The example consists of the following files: supermen.xsd XML Schema which describes supermen instance documents. person.xml superman.xml batman.xml Sample XML instance documents. supermen-pskel.hxx supermen-pskel.cxx Parser skeletons generated by the XSD/e compiler from supermen.xsd. Note the use of the --generate-polymorphic command line option. supermen-pimpl-mixin.hxx supermen-pimpl-mixin.cxx supermen-pimpl-tiein.hxx supermen-pimpl-tiein.cxx Parser implementations (using either mixin or tiein parser reuse style) that print the XML data to STDOUT. driver.cxx Driver for the example. It implements a custom document parser that determines which XML Schema type is being parsed and uses the corresponding parser implementation. The driver first constructs a parser instance from all the individual parsers found in one of supermen-pimpl-*.hxx. In then invokes this parser instance to parse the input file. To run the example on the sample XML instance documents simply execute: $ ./driver person.xml $ ./driver superman.xml $ ./driver batman.xml The example reads from STDIN if input file is not specified: $ ./driver