From 8a637f5697fdee3e7ae2d46f64a64d40cba5954b Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 31 Oct 2012 07:59:18 +0200
Subject: Add dynamic multi-database support excluding query

---
 odb/source.cxx | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 odb/source.cxx

(limited to 'odb/source.cxx')

diff --git a/odb/source.cxx b/odb/source.cxx
new file mode 100644
index 0000000..94560ce
--- /dev/null
+++ b/odb/source.cxx
@@ -0,0 +1,100 @@
+// file      : odb/source.cxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license   : GNU GPL v3; see accompanying LICENSE file
+
+#include <odb/common.hxx>
+#include <odb/context.hxx>
+#include <odb/generate.hxx>
+#include <odb/diagnostics.hxx>
+
+using namespace std;
+
+namespace source
+{
+  struct class_: traversal::class_, virtual context
+  {
+    virtual void
+    traverse (type& c)
+    {
+      if (!options.at_once () && class_file (c) != unit.file ())
+        return;
+
+      if (object (c))
+        traverse_object (c);
+      else if (view (c))
+        traverse_view (c);
+    }
+
+    void
+    traverse_object (type&);
+
+    void
+    traverse_view (type&);
+  };
+}
+
+void source::class_::
+traverse_object (type& c)
+{
+  bool poly (polymorphic (c));
+  bool abst (abstract (c));
+  bool reuse_abst (abst && !poly);
+
+  // The rest only applies to dynamic milti-database support and non-
+  // reuse-abstract objects.
+  //
+  if (reuse_abst || options.multi_database () != multi_database::dynamic)
+    return;
+
+  string const& type (class_fq_name (c));
+  string traits ("access::object_traits_impl< " + type + ", id_default >");
+
+  os << "// " << class_name (c) << endl
+     << "//" << endl
+     << endl;
+
+  os << "const " << traits << "::" << endl
+     << "function_table_type*" << endl
+     << traits << "::" << endl
+     << "function_table[database_count];"
+     << endl;
+}
+
+void source::class_::
+traverse_view (type&)
+{
+}
+
+namespace source
+{
+  void
+  generate ()
+  {
+    context ctx;
+    ostream& os (ctx.os);
+
+    traversal::unit unit;
+    traversal::defines unit_defines;
+    typedefs unit_typedefs (false);
+    traversal::namespace_ ns;
+    class_ c;
+
+    unit >> unit_defines >> ns;
+    unit_defines >> c;
+    unit >> unit_typedefs >> c;
+
+    traversal::defines ns_defines;
+    typedefs ns_typedefs (false);
+
+    ns >> ns_defines >> ns;
+    ns_defines >> c;
+    ns >> ns_typedefs >> c;
+
+    os << "namespace odb"
+       << "{";
+
+    unit.dispatch (ctx.unit);
+
+    os << "}";
+  }
+}
-- 
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