From bc85d6a1c8d5296428c121cd1b51d470d5c0e963 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 16 Nov 2011 12:14:57 +0200
Subject: Add initial translate_error() implementation

---
 odb/mssql/error.cxx | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 odb/mssql/error.hxx | 30 ++++++++++++++++++++++
 odb/mssql/makefile  |  1 +
 3 files changed, 102 insertions(+)
 create mode 100644 odb/mssql/error.cxx
 create mode 100644 odb/mssql/error.hxx

diff --git a/odb/mssql/error.cxx b/odb/mssql/error.cxx
new file mode 100644
index 0000000..f2e172b
--- /dev/null
+++ b/odb/mssql/error.cxx
@@ -0,0 +1,71 @@
+// file      : odb/mssql/error.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <odb/mssql/odbc.hxx>
+#include <odb/mssql/error.hxx>
+//#include <odb/mssql/connection.hxx>
+#include <odb/mssql/exceptions.hxx>
+
+using namespace std;
+
+namespace odb
+{
+  namespace mssql
+  {
+    static void
+    translate_error (SQLHANDLE h, SQLSMALLINT htype, connection* /*conn*/)
+    {
+      char sqlstate[SQL_SQLSTATE_SIZE + 1];
+      SQLINTEGER native_code; // Will be 0 if no natve code.
+      char msg[512];          // Will be truncated if doesn't fit.
+      SQLSMALLINT msg_size;
+
+      database_exception e;
+
+      for (SQLSMALLINT i (1);; ++i)
+      {
+        SQLRETURN r (SQLGetDiagRec (htype,
+                                    h,
+                                    i,
+                                    (SQLCHAR*) sqlstate,
+                                    &native_code,
+                                    (SQLCHAR*) msg,
+                                    sizeof (msg),
+                                    &msg_size));
+
+        if (r == SQL_NO_DATA)
+          break;
+        else if (r == SQL_SUCCESS || r == SQL_SUCCESS_WITH_INFO)
+        {
+          //@@ TODO: translate timeout, connection_lost exceptions
+          //@@ TODO: if conn != 0, mark it as failed for certain errors
+
+          e.append (native_code, sqlstate, msg);
+        }
+        else
+          e.append (0, "?????", "unable to extract information for this "
+                    "diagnostic record");
+      }
+
+      if (e.size () == 0)
+        e.append (0, "?????", "no diagnostic record (using wrong handle?)");
+
+      throw e;
+    }
+
+    void
+    translate_error (const auto_handle<SQL_HANDLE_ENV>& h)
+    {
+      translate_error (h, SQL_HANDLE_ENV, 0);
+    }
+
+    void
+    translate_error (connection& /*c*/)
+    {
+      //@@ TODO enable (also header inclusion)
+      // translate_error (c.handle (), SQL_HANDLE_DBC, &c);
+    }
+  }
+}
diff --git a/odb/mssql/error.hxx b/odb/mssql/error.hxx
new file mode 100644
index 0000000..2cbea5c
--- /dev/null
+++ b/odb/mssql/error.hxx
@@ -0,0 +1,30 @@
+// file      : odb/mssql/error.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_MSSQL_ERROR_HXX
+#define ODB_MSSQL_ERROR_HXX
+
+#include <odb/pre.hxx>
+
+#include <odb/mssql/version.hxx>
+#include <odb/mssql/forward.hxx>     // connection
+#include <odb/mssql/auto-handle.hxx>
+#include <odb/mssql/details/export.hxx>
+
+namespace odb
+{
+  namespace mssql
+  {
+    LIBODB_MSSQL_EXPORT void
+    translate_error (const auto_handle<SQL_HANDLE_ENV>&);
+
+    LIBODB_MSSQL_EXPORT void
+    translate_error (connection&);
+  }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_MSSQL_ERROR_HXX
diff --git a/odb/mssql/makefile b/odb/mssql/makefile
index 00342f1..fbe46f4 100644
--- a/odb/mssql/makefile
+++ b/odb/mssql/makefile
@@ -8,6 +8,7 @@ include $(dir $(lastword $(MAKEFILE_LIST)))../../build/bootstrap.make
 
 cxx :=            \
 auto-handle.cxx   \
+error.cxx         \
 exceptions.cxx
 
 
-- 
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