Imported Upstream version 3.3.0.2upstream/3.3.0.2

1 files changed, 175 insertions, 0 deletions

diff --git a/xsd/documentation/cxx/tree/dbxml/driver.cxx b/xsd/documentation/cxx/tree/dbxml/driver.cxx
new file mode 100644
index 0000000..56cbb4a
--- /dev/null
+++ b/xsd/documentation/cxx/tree/dbxml/driver.cxx
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+// file      : examples/cxx/tree/dbxml/driver.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : not copyrighted - public domain
+
+#include <memory>   // std::auto_ptr
+#include <string>
+#include <cassert>
+#include <iostream>
+
+#include <dbxml/DbXml.hpp>
+
+#include "library.hxx"
+
+using std::cerr;
+using std::endl;
+using std::string;
+using std::auto_ptr;
+
+using namespace DbXml;
+using namespace xsd::cxx; // for xml::string
+
+void
+print_document (const string& desc,
+                XmlContainer container,
+                const string& name)
+{
+  XmlDocument doc (container.getDocument (name));
+
+  string content;
+  doc.getContent (content);
+
+  cerr << endl
+       << desc << endl
+       << content << endl;
+}
+
+int
+main ()
+{
+  try
+  {
+    using namespace library;
+    using xml_schema::date;
+
+    XmlManager manager;
+
+    {
+      XmlContainer container (manager.createContainer ("new.bdbxml"));
+
+      XmlUpdateContext update_context (manager.createUpdateContext ());
+
+      XmlQueryContext context (manager.createQueryContext ());
+      context.setNamespace ("lib", "http://www.codesynthesis.com/library");
+
+
+      // Create a new document from an object model.
+      //
+      {
+        // Create a new catalog with one book.
+        //
+        catalog c;
+
+        book b (20530902,                // ISBN
+                "The Elements of Style", // Title
+                genre::reference,        // Genre
+                "ES");                   // ID
+
+        author strunk ("William Strunk, Jr.", date (1869, 7, 1));
+        strunk.died (date (1946, 9, 26));
+
+        b.author ().push_back (strunk);
+        c.book ().push_back (b);
+
+
+        // Create a new XML document.
+        //
+        XmlDocument doc (manager.createDocument ());
+        doc.setName ("new.xml");
+
+
+        // Obtain its DOM representation and add the root element.
+        //
+        xercesc::DOMDocument& dom_doc (*doc.getContentAsDOM ());
+
+        dom_doc.appendChild (
+          dom_doc.createElementNS (
+            xml::string ("http://www.codesynthesis.com/library").c_str (),
+            xml::string ("lib:catalog").c_str ()));
+
+
+        // Serialize the object model to the XML document. Also avoid
+	// re-initializing the Xerces-C++ runtime since XmlManager has
+	// it initialized.
+        //
+        catalog_ (dom_doc, c, xml_schema::flags::dont_initialize);
+
+
+        // Place the document into the container.
+        //
+        container.putDocument (doc, update_context);
+
+        print_document ("after create:", container, "new.xml");
+      }
+
+      // Create an object model from a document in DB.
+      //
+      {
+        // Resolve the document in the container.
+        //
+        XmlDocument doc (container.getDocument ("new.xml"));
+
+
+        // Create the object model from the document's DOM. Also avoid
+	// re-initializing the Xerces-C++ runtime since XmlManager has
+	// it initialized.
+        //
+        auto_ptr<catalog> c (catalog_ (*doc.getContentAsDOM (),
+                                       xml_schema::flags::dont_initialize));
+
+        cerr << *c << endl;
+      }
+
+
+      // Lookup a document fragment.
+      //
+
+      string query ("collection('new.bdbxml')/lib:catalog/book[@id='ES']");
+
+      // Find "The Elements of Style".
+      //
+      XmlValue v;
+      XmlResults results (manager.query (query, context));
+
+      if (results.next (v))
+      {
+        // Create an object model from the document fragment.
+        //
+        auto_ptr<book> b (
+          new book (
+            *static_cast<xercesc::DOMElement*> (v.asNode ())));
+
+        cerr << *b << endl;
+
+
+        // Add another author, change the availability status.
+        //
+        author white ("E.B. White", date (1899, 7, 11));
+        white.died (date (1985, 10, 1));
+
+        b->author ().push_back (white);
+        b->available (false);
+
+
+        // Update the document fragment from the object model.
+        //
+        *static_cast<xercesc::DOMElement*> (v.asNode ()) << *b;
+
+
+        // Update the document in the container.
+        //
+        XmlDocument doc (v.asDocument ());
+        container.updateDocument (doc, update_context);
+      }
+
+      print_document ("after update:", container, "new.xml");
+    }
+
+    manager.removeContainer ("new.bdbxml");
+  }
+  catch (const std::exception& e)
+  {
+    cerr << e.what () << endl;
+    return 1;
+  }
+}