Make odb::exception abstract

Implement what() in concrete exceptions.

1 files changed, 35 insertions, 0 deletions

diff --git a/odb/exceptions.cxx b/odb/exceptions.cxx
index d86657c..b27cc37 100644
--- a/odb/exceptions.cxx
+++ b/odb/exceptions.cxx
@@ -7,4 +7,39 @@
 
 namespace odb
 {
+  const char* already_in_transaction::
+  what () const throw ()
+  {
+    return "transaction already in progress in this thread";
+  }
+
+  const char* not_in_transaction::
+  what () const throw ()
+  {
+    return "operation can only be performed in transaction";
+  }
+
+  const char* transaction_already_finilized::
+  what () const throw ()
+  {
+    return "transaction already committed or rolled back";
+  }
+
+  const char* deadlock::
+  what () const throw ()
+  {
+    return "transaction aborted due to deadlock";
+  }
+
+  const char* object_not_persistent::
+  what () const throw ()
+  {
+    return "object not persistent";
+  }
+
+  const char* object_already_persistent::
+  what () const throw ()
+  {
+    return "object already persistent";
+  }
 }