Next chunk of functionality

1 files changed, 43 insertions, 0 deletions

diff --git a/odb/common.hxx b/odb/common.hxx
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+++ b/odb/common.hxx
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+// file      : odb/common.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_COMMON_HXX
+#define ODB_COMMON_HXX
+
+#include <odb/context.hxx>
+
+// Find id member.
+//
+struct id_member: traversal::class_,
+                  traversal::data_member,
+                  context
+{
+  id_member (context& c)
+      : context (c), m_ (0)
+  {
+    *this >> names_ >> *this;
+  }
+
+  semantics::data_member*
+  member () const
+  {
+    return m_;
+  }
+
+  virtual void
+  traverse (semantics::data_member& m)
+  {
+    if (m.count ("id"))
+      m_ = &m;
+  }
+
+  using class_::traverse;
+
+private:
+  traversal::names names_;
+  semantics::data_member* m_;
+};
+
+#endif // ODB_COMMON_HXX