Polymorphic inheritance support

1 files changed, 12 insertions, 0 deletions

diff --git a/odb/exceptions.cxx b/odb/exceptions.cxx
index b200843..d56711c 100644
--- a/odb/exceptions.cxx
+++ b/odb/exceptions.cxx
@@ -94,6 +94,18 @@ namespace odb
     return "query result is not cached";
   }
 
+  const char* abstract_class::
+  what () const throw ()
+  {
+    return "database operation on instance of abstract class";
+  }
+
+  const char* no_type_info::
+  what () const throw ()
+  {
+    return "no type information";
+  }
+
   unknown_schema::
   unknown_schema (const std::string& name)
       : name_ (name)