From ab135a6c31cd0e8c8b63b78781baa22442c1c129 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 18 Mar 2013 08:42:38 +0200
Subject: Add changelog, changeset, and add_table semantics nodes

---
 odb/semantics/relational/changelog.cxx | 116 +++++++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 odb/semantics/relational/changelog.cxx

(limited to 'odb/semantics/relational/changelog.cxx')

diff --git a/odb/semantics/relational/changelog.cxx b/odb/semantics/relational/changelog.cxx
new file mode 100644
index 0000000..c8a4053
--- /dev/null
+++ b/odb/semantics/relational/changelog.cxx
@@ -0,0 +1,116 @@
+// file      : odb/semantics/relational/changelog.cxx
+// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
+// license   : GNU GPL v3; see accompanying LICENSE file
+
+#include <vector>
+
+#include <cutl/compiler/type-info.hxx>
+#include <odb/semantics/relational.hxx>
+
+namespace semantics
+{
+  namespace relational
+  {
+    changelog::
+    changelog (xml::parser& p)
+        : contains_model_ (0)
+    {
+      using namespace xml;
+
+      p.next_expect (parser::start_element, xmlns, "changelog");
+      p.content (parser::complex);
+
+      if (p.attribute<unsigned int> ("version") != 1)
+        throw parsing (p, "unsupported changelog format version");
+
+      // Get the changesets. Because they are stored in the reverse order,
+      // first save them to the temporary vector.
+      //
+      typedef std::vector<changeset*> changesets;
+      changesets cs;
+
+      for (parser::event_type e (p.peek ());
+           e == parser::start_element;
+           e = p.peek ())
+      {
+        if (p.qname () != xml::qname (xmlns, "changeset"))
+          break; // Not our elements.
+
+        p.next ();
+        cs.push_back (&new_node<changeset> (p, *this));
+        p.next_expect (parser::end_element);
+      }
+
+      for (changesets::reverse_iterator i (cs.rbegin ()); i != cs.rend (); ++i)
+        new_edge<contains_changeset> (*this, **i);
+
+      // Get the model.
+      //
+      p.next_expect (parser::start_element, xmlns, "model");
+
+      model_type& m (new_node<model_type> (p, *this));
+      new_edge<contains_model_type> (*this, m);
+
+      p.next_expect (parser::end_element);
+      p.next_expect (parser::end_element);
+    }
+
+    void changelog::
+    serialize (xml::serializer& s) const
+    {
+      s.start_element (xmlns, "changelog");
+      s.namespace_decl (xmlns, "");
+      s.attribute ("version", 1); // Format version.
+
+      // For better readability serialize things in reverse order so that
+      // the most recent changeset appears first.
+      //
+      for (contains_changeset_list::const_reverse_iterator i (
+             contains_changeset_.rbegin ());
+           i != contains_changeset_.rend (); ++i)
+      {
+        (*i)->changeset ().serialize (s);
+      }
+
+      model ().serialize (s);
+      s.end_element ();
+    }
+
+    // type info
+    //
+    namespace
+    {
+      struct init
+      {
+        init ()
+        {
+          using compiler::type_info;
+
+          // contains_model
+          //
+          {
+            type_info ti (typeid (contains_model));
+            ti.add_base (typeid (edge));
+            insert (ti);
+          }
+
+          // contains_changeset
+          //
+          {
+            type_info ti (typeid (contains_changeset));
+            ti.add_base (typeid (edge));
+            insert (ti);
+          }
+
+          // changelog
+          //
+          {
+            type_info ti (typeid (changelog));
+            ti.add_base (typeid (node));
+            insert (ti);
+          }
+        }
+      } init_;
+    }
+  }
+}
-- 
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