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diff --git a/xsd-examples/cxx/tree/custom/calendar/.gitignore b/xsd-examples/cxx/tree/custom/calendar/.gitignore
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+calendar.?xx
+xml-schema.hxx
diff --git a/xsd-examples/cxx/tree/custom/calendar/README b/xsd-examples/cxx/tree/custom/calendar/README
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+This example shows how to customize the XML Schema built-in types by mapping
+xsd:date built-in type to the date class from the Boost date_time library.
+You will need the Boost date_time library[1] installed in order to build
+and run this example. For more information on the C++/Tree mapping
+customization see the C++/Tree Mapping Customization Guide[2].
+
+[1] http://www.boost.org
+[2] http://wiki.codesynthesis.com/Tree/Customization_guide
+
+The example consists of the following files:
+
+calendar.xsd
+  XML Schema definition for a simple calendar format.
+
+calendar.xml
+  Sample XML instance document.
+
+xml-schema.hxx
+  C++ types for XML Schema built-in types. This header file is generated
+  by XSD using the --generate-xml-schema option. The --custom-type option
+  is also used to customize the xsd:date type.
+
+calendar.hxx
+calendar.ixx
+calendar.cxx
+  C++ types that represent the given vocabulary and a set of parsing
+  functions that convert XML instance documents to a tree-like in-memory
+  object model. These are generated by XSD from calendar.xsd with the
+  --extern-xml-schema option in order to include xml-schema.hxx.
+
+xml-schema-custom.hxx
+  Header file which defines our own xml_schema::date class. It is
+  included at the end of xml-schema.hxx using the --hxx-epilogue
+  option.
+
+xml-schema-custom.cxx
+  Source file which contains the implementation of our xml_schema:date
+  class.
+
+driver.cxx
+  Driver for the example. It first calls one of the parsing functions
+  that constructs the object model from the input file. It then prints
+  the calendar events to STDERR.
+
+To run the example on the sample XML instance document simply execute:
+
+$ ./driver calendar.xml
diff --git a/xsd-examples/cxx/tree/custom/calendar/buildfile b/xsd-examples/cxx/tree/custom/calendar/buildfile
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+++ b/xsd-examples/cxx/tree/custom/calendar/buildfile
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+# file      : cxx/tree/custom/calendar/buildfile
+# license   : not copyrighted - public domain
+
+import libs  = libxsd%lib{xsd}
+import libs += libxerces-c%lib{xerces-c}
+import libs += libboost-date-time%lib{boost_date_time}
+
+./: exe{driver} doc{README}
+
+exe{driver}: {hxx     cxx}{* -calendar -xml-schema} \
+             {hxx ixx cxx}{calendar}                \
+             {hxx        }{xml-schema}              \
+             $libs
+
+exe{driver}: xml{calendar}: test.input = true
+
+<{hxx ixx cxx}{calendar}>: xsd{calendar} $xsd
+{{
+  diag xsd ($<[0]) # @@ TMP
+
+  $xsd cxx-tree --std c++11               \
+       --generate-inline                  \
+       --extern-xml-schema xml-schema.xsd \
+       --output-dir $out_base             \
+       $path($<[0])
+}}
+
+hxx{xml-schema}: $xsd
+{{
+  diag xsd gen ($>[0])
+
+  # Note that the specified xml-schema.xsd doesn't exist and is only used to
+  # deduce the generated header name.
+  #
+  $xsd cxx-tree --std c++11                              \
+       --generate-xml-schema                             \
+       --custom-type date                                \
+       --hxx-epilogue '#include "xml-schema-custom.hxx"' \
+       --output-dir $out_base                            \
+       xml-schema.xsd
+}}
+
+cxx.poptions =+ "-I$out_base" "-I$src_base"
+
+# Define XSD_CXX11 since we include libxsd headers directly.
+#
+cxx.poptions += -DXSD_CXX11
diff --git a/xsd-examples/cxx/tree/custom/calendar/calendar.xml b/xsd-examples/cxx/tree/custom/calendar/calendar.xml
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+++ b/xsd-examples/cxx/tree/custom/calendar/calendar.xml
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+<?xml version="1.0"?>
+
+<!--
+
+file      : cxx/tree/custom/calendar/calendar.xml
+copyright : not copyrighted - public domain
+
+-->
+
+<cal:events xmlns:cal="http://www.codesynthesis.com/calendar"
+	     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	     xsi:schemaLocation="http://www.codesynthesis.com/calendar calendar.xsd">
+
+  <event title="Bike ride" date="2006-09-04">
+  Don't forget to change the tire.
+  </event>
+
+  <event title="Mountain hike" date="2006-09-05">
+  Can be cancelled if it is too cold.
+  </event>
+
+</cal:events>
diff --git a/xsd-examples/cxx/tree/custom/calendar/calendar.xsd b/xsd-examples/cxx/tree/custom/calendar/calendar.xsd
new file mode 100644
index 0000000..8b36c34
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+++ b/xsd-examples/cxx/tree/custom/calendar/calendar.xsd
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+<?xml version="1.0"?>
+
+<!--
+
+file      : cxx/tree/custom/calendar/calendar.xsd
+copyright : not copyrighted - public domain
+
+-->
+
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+            xmlns:cal="http://www.codesynthesis.com/calendar"
+            targetNamespace="http://www.codesynthesis.com/calendar">
+
+  <xsd:complexType name="event">
+    <xsd:simpleContent>
+      <xsd:extension base="xsd:string">
+        <xsd:attribute name="title" type="xsd:string" use="required"/>
+        <xsd:attribute name="date" type="xsd:date" use="required"/>
+      </xsd:extension>
+    </xsd:simpleContent>
+  </xsd:complexType>
+
+  <xsd:complexType name="events">
+    <xsd:sequence>
+      <xsd:element name="event" type="cal:event" maxOccurs="unbounded"/>
+    </xsd:sequence>
+  </xsd:complexType>
+
+  <xsd:element name="events" type="cal:events"/>
+
+</xsd:schema>
diff --git a/xsd-examples/cxx/tree/custom/calendar/driver.cxx b/xsd-examples/cxx/tree/custom/calendar/driver.cxx
new file mode 100644
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+++ b/xsd-examples/cxx/tree/custom/calendar/driver.cxx
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+// file      : cxx/tree/custom/calendar/driver.cxx
+// copyright : not copyrighted - public domain
+
+#include <memory>   // std::unique_ptr
+#include <iostream>
+
+#include "calendar.hxx"
+
+using std::cerr;
+using std::endl;
+
+int
+main (int argc, char* argv[])
+{
+  if (argc != 2)
+  {
+    cerr << "usage: " << argv[0] << " calendar.xml" << endl;
+    return 1;
+  }
+
+  try
+  {
+    using namespace calendar;
+
+    std::unique_ptr<events> e (events_ (argv[1]));
+
+    for (events::event_const_iterator i (e->event ().begin ());
+         i != e->event ().end (); ++i)
+    {
+      cerr << i->date () << " " << i->title () << endl
+           << *i << endl;
+    }
+  }
+  catch (const xml_schema::exception& e)
+  {
+    cerr << e << endl;
+    return 1;
+  }
+}
diff --git a/xsd-examples/cxx/tree/custom/calendar/xml-schema-custom.cxx b/xsd-examples/cxx/tree/custom/calendar/xml-schema-custom.cxx
new file mode 100644
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+++ b/xsd-examples/cxx/tree/custom/calendar/xml-schema-custom.cxx
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+// file      : cxx/tree/custom/calendar/xml-schema-custom.cxx
+// copyright : not copyrighted - public domain
+
+// Include xml-schema.hxx instead of xml-schema-custom.hxx here.
+//
+#include "xml-schema.hxx"
+
+#include <xsd/cxx/xml/string.hxx> // xsd::cxx::xml::transcode
+#include <xsd/cxx/tree/text.hxx>  // xsd::cxx::tree::text_content
+
+using namespace boost;
+using namespace boost::gregorian;
+
+namespace xml_schema
+{
+  date::
+  date (const xercesc::DOMElement& e, flags f, container* c)
+      : simple_type (e, f, c),
+        gregorian::date (
+          from_simple_string (
+            xsd::cxx::tree::text_content<char> (e)))
+  {
+  }
+
+  date::
+  date (const xercesc::DOMAttr& a, flags f, container* c)
+      : simple_type (a, f, c),
+        gregorian::date (
+          from_simple_string (
+            xsd::cxx::xml::transcode<char> (a.getValue ())))
+  {
+  }
+
+  date::
+  date (const std::string& s,
+        const xercesc::DOMElement* e,
+        flags f,
+        container* c)
+      : simple_type (s, e, f, c),
+        gregorian::date (from_simple_string (s))
+  {
+  }
+
+  date::
+  date (const date& d, flags f, container* c)
+      : simple_type (d, f, c),
+        gregorian::date (d)
+  {
+  }
+
+  date* date::
+  _clone (flags f, container* c) const
+  {
+    return new date (*this, f, c);
+  }
+}
diff --git a/xsd-examples/cxx/tree/custom/calendar/xml-schema-custom.hxx b/xsd-examples/cxx/tree/custom/calendar/xml-schema-custom.hxx
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+++ b/xsd-examples/cxx/tree/custom/calendar/xml-schema-custom.hxx
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+// file      : cxx/tree/custom/calendar/xml-schema-custom.hxx
+// copyright : not copyrighted - public domain
+
+// Do not include this file directly, use xml-schema.hxx instead. This
+// file is included into generated xml-schema.hxx so we do not need to
+// guard against multiple inclusions.
+//
+
+#include <boost/date_time/gregorian/gregorian.hpp> // boost::gregorian::date
+
+namespace xml_schema
+{
+  class date: public simple_type,
+              public boost::gregorian::date
+  {
+  public:
+    // Parsing c-tors: element, attribute, and list item.
+    //
+    date (const xercesc::DOMElement&, flags = 0, container* = 0);
+    date (const xercesc::DOMAttr&, flags = 0, container* = 0);
+    date (const std::string&,
+          const xercesc::DOMElement*,
+          flags = 0,
+          container* = 0);
+
+    // Copy c-tor and _clone.
+    //
+    date (const date&, flags = 0, container* = 0);
+
+    virtual date*
+    _clone (flags = 0, container* = 0) const;
+  };
+}