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diff --git a/examples/cxx/tree/custom/wildcard/wildcard-custom.cxx b/examples/cxx/tree/custom/wildcard/wildcard-custom.cxx
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+// file : examples/cxx/tree/custom/wildcard/wildcard-custom.cxx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : not copyrighted - public domain
+
+#include <ostream>
+
+// Include wildcard.hxx instead of wildcard-custom.hxx here.
+//
+#include "wildcard.hxx"
+
+namespace wildcard
+{
+ data::
+ data (const xml_schema::string& d)
+ : data_base (d), scope_present_ (false)
+ {
+ }
+
+ data::
+ data (const xercesc::DOMElement& e,
+ xml_schema::flags f,
+ xml_schema::container* c)
+ : data_base (e, f, c), scope_present_ (false)
+ {
+ // Check if we've got the scope attribute.
+ //
+ namespace xml = xsd::cxx::xml;
+ xml::string name ("scope");
+
+ if (e.hasAttribute (name.c_str ()))
+ {
+ scope (xml::transcode<char> (e.getAttribute (name.c_str ())));
+ }
+ }
+
+ data::
+ data (const data& d,
+ xml_schema::flags f,
+ xml_schema::container* c)
+ : data_base (d, f, c),
+ scope_present_ (d.scope_present_),
+ scope_ (d.scope_)
+ {
+ }
+
+ data* data::
+ _clone (xml_schema::flags f, xml_schema::container* c) const
+ {
+ return new data (*this, f, c);
+ }
+
+ void
+ operator<< (xercesc::DOMElement& e, const data& x)
+ {
+ // Use our base to serialize data and id.
+ //
+ const data_base& b (x);
+ e << b;
+
+ // Add the scope attribute if present.
+ //
+ if (x.scope_present ())
+ {
+ namespace xml = xsd::cxx::xml;
+ xml::string name ("scope");
+ xml::string value (x.scope ());
+
+ e.setAttribute (name.c_str (), value.c_str ());
+ }
+ }
+
+ std::ostream&
+ operator<< (std::ostream& os, const data& x)
+ {
+ // Use our base to print date and id.
+ //
+ const data_base& b (x);
+ os << b;
+
+ if (x.scope_present ())
+ os << std::endl << "scope: " << x.scope ();
+
+ return os;
+ }
+}