Improve the Oracle translate_error implementation

The improved implementation scans all the records associated with an error
handle. Furthermore, if it is established that the connection to the database
has been lost, the connection is marked as such. Additionally, all special
exceptions (deadlock, timeout, and connection_lost) are now supported.

1 files changed, 30 insertions, 4 deletions

diff --git a/odb/oracle/exceptions.cxx b/odb/oracle/exceptions.cxx
index 903608e..04928f6 100644
--- a/odb/oracle/exceptions.cxx
+++ b/odb/oracle/exceptions.cxx
@@ -3,6 +3,8 @@
 // copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
 // license   : ODB NCUEL; see accompanying LICENSE file
 
+#include <sstream>
+
 #include <odb/oracle/exceptions.hxx>
 
 using namespace std;
@@ -15,9 +17,9 @@ namespace odb
     // database_exception
     //
 
-    database_exception::
-    database_exception (int error, const string& message)
-        : error_ (error), message_ (message)
+    database_exception::record::
+    record (int e, const string& m)
+        : error_ (e), message_ (m)
     {
     }
 
@@ -26,10 +28,34 @@ namespace odb
     {
     }
 
+    database_exception::
+    database_exception ()
+    {
+    }
+
+    database_exception::
+    database_exception (int e, const string& m)
+    {
+      append (e, m);
+    }
+
+    void database_exception::
+    append (int e, const string& m)
+    {
+      records_.push_back (record (e, m));
+
+      if (!what_.empty ())
+        what_ += '\n';
+
+      ostringstream ostr;
+      ostr << e << ": " << m;
+      what_ += ostr.str ();
+    }
+
     const char* database_exception::
     what () const throw ()
     {
-      return message_.c_str ();
+      return what_.c_str ();
     }
 
     //