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+// file : common/inheritance/polymorphism/test10.hxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef TEST10_HXX
+#define TEST10_HXX
+
+#include <typeinfo>
+
+#include <odb/core.hxx>
+
+// Test empty polymorphic classes.
+//
+#pragma db namespace table("t10_")
+namespace test10
+{
+ #pragma db object polymorphic
+ struct root
+ {
+ virtual ~root () = 0; // Auto-abstract.
+ root () {}
+ root (unsigned long i): id (i) {}
+
+ #pragma db id
+ unsigned long id;
+
+ virtual bool
+ compare (const root& r, bool tc = true) const
+ {
+ if (tc && typeid (r) != typeid (root))
+ return false;
+
+ return id == r.id;
+ }
+ };
+
+ inline root::
+ ~root () {}
+
+ inline bool
+ operator== (const root& x, const root& y) {return x.compare (y);}
+
+ #pragma db object
+ struct base: root
+ {
+ base () {}
+ base (unsigned long i, unsigned long n): root (i), num (n) {}
+
+ unsigned long num;
+
+ virtual bool
+ compare (const root& r, bool tc = true) const
+ {
+ if (tc && typeid (r) != typeid (base))
+ return false;
+
+ const base& b (static_cast<const base&> (r));
+ return root::compare (r, false) && num == b.num;
+ }
+ };
+
+ #pragma db object
+ struct derived: base
+ {
+ derived () {}
+ derived (unsigned long i, unsigned long n): base (i, n) {}
+
+ virtual bool
+ compare (const root& r, bool tc = true) const
+ {
+ if (tc && typeid (r) != typeid (derived))
+ return false;
+
+ return base::compare (r, false);
+ }
+ };
+}
+
+#endif // TEST10_HXX