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+// file : examples/cxx/tree/order/element/driver.cxx
+// copyright : not copyrighted - public domain
+
+#include <memory> // std::auto_ptr
+#include <cassert>
+#include <iostream>
+
+#include <xercesc/dom/DOM.hpp>
+#include <xercesc/util/PlatformUtils.hpp>
+
+#include "transactions.hxx"
+
+// The following string class keeps us sane when working with Xerces.
+// Include it after the generated header in order to get only char or
+// wchar_t version depending on how you compiled your schemas.
+//
+#include <xsd/cxx/xml/string.hxx>
+
+using std::cerr;
+using std::endl;
+
+int
+main (int argc, char* argv[])
+{
+ if (argc != 2)
+ {
+ cerr << "usage: " << argv[0] << " transactions.xml" << endl;
+ return 1;
+ }
+
+ using namespace xercesc;
+
+ int r (0);
+
+ // The Xerces-C++ DOM objects that will be used to store the
+ // content matched by the wildcard "out-lives" the call to the
+ // parsing function. Therefore we need to initialize the
+ // Xerces-C++ runtime ourselves.
+ //
+ XMLPlatformUtils::Initialize ();
+
+ try
+ {
+ using namespace transactions;
+
+ // Parse the batch.
+ //
+ std::auto_ptr<batch> b (
+ batch_ (argv[1], xml_schema::flags::dont_initialize));
+
+ // Print what we've got in content order.
+ //
+ for (batch::content_order_const_iterator i (b->content_order ().begin ());
+ i != b->content_order ().end ();
+ ++i)
+ {
+ switch (i->id)
+ {
+ case batch::balance_id:
+ {
+ const balance& t (b->balance ()[i->index]);
+ cerr << t.account () << " balance" << endl;
+ break;
+ }
+ case batch::withdraw_id:
+ {
+ const withdraw& t (b->withdraw ()[i->index]);
+ cerr << t.account () << " withdraw " << t.amount () << endl;
+ break;
+ }
+ case batch::deposit_id:
+ {
+ const deposit& t (b->deposit ()[i->index]);
+ cerr << t.account () << " deposit " << t.amount () << endl;
+ break;
+ }
+ case batch::any_id:
+ {
+ namespace xml = xsd::cxx::xml;
+
+ const DOMElement& e (b->any ()[i->index]);
+ cerr << xml::transcode<char> (e.getLocalName ()) << endl;
+ break;
+ }
+ default:
+ {
+ assert (false); // Unknown content id.
+ }
+ }
+ }
+
+ cerr << endl;
+
+ // Modify the transaction batch. First remove the last transaction.
+ // Note that we have to update both the content itself and content
+ // order sequences.
+ //
+ batch::content_order_sequence& co (b->content_order ());
+
+ co.pop_back ();
+ b->withdraw ().pop_back ();
+
+ // Now add a few more transactions. Again we have to add both the
+ // content and its ordering. The order information consists of the
+ // content id and, in case of a sequence, the index.
+ //
+ b->deposit ().push_back (deposit (123456789, 100000));
+ co.push_back (
+ batch::content_order_type (
+ batch::deposit_id, b->deposit ().size () - 1));
+
+ // The next transaction we add at the beginning of the batch.
+ //
+ b->balance ().push_back (balance (123456789));
+ co.insert (co.begin (),
+ batch::content_order_type (
+ batch::balance_id, b->balance ().size () - 1));
+
+ // Note also that when we merely modify the content of one
+ // of the elements in place, we don't need to update its
+ // order. For example:
+ //
+ b->deposit ()[0].amount (2000000);
+
+ // Serialize the modified transaction batch back to XML.
+ //
+ xml_schema::namespace_infomap map;
+
+ map[""].name = "http://www.codesynthesis.com/transactions";
+ map[""].schema = "transactions.xsd";
+ map["te"].name = "http://www.codesynthesis.com/transactions-extras";
+
+ batch_ (std::cout,
+ *b,
+ map,
+ "UTF-8",
+ xml_schema::flags::dont_initialize);
+ }
+ catch (const xml_schema::exception& e)
+ {
+ cerr << e << endl;
+ r = 1;
+ }
+
+ XMLPlatformUtils::Terminate ();
+ return r;
+}