From 884dea7531962b17ef843ac2175faa050e8b0758 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 10 Apr 2014 12:57:06 +0200
Subject: Add support for ordered types, mixed content

---
 examples/cxx/tree/order/element/driver.cxx | 147 +++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 examples/cxx/tree/order/element/driver.cxx

(limited to 'examples/cxx/tree/order/element/driver.cxx')

diff --git a/examples/cxx/tree/order/element/driver.cxx b/examples/cxx/tree/order/element/driver.cxx
new file mode 100644
index 0000000..0ea6d6f
--- /dev/null
+++ b/examples/cxx/tree/order/element/driver.cxx
@@ -0,0 +1,147 @@
+// 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;
+}
-- 
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