Implement uniform handle management across all databases

Also use the auto_handle template instead of the raw handle in connection,
statement, and result classes. This removes a lot of brittle "exception
safety guarantee" code that we had in those classes.

1 files changed, 26 insertions, 0 deletions

diff --git a/odb/pgsql/auto-handle.cxx b/odb/pgsql/auto-handle.cxx
new file mode 100644
index 0000000..08e3006
--- /dev/null
+++ b/odb/pgsql/auto-handle.cxx
@@ -0,0 +1,26 @@
+// file      : odb/pgsql/auto-handle.cxx
+// author    : Constantin Michael <constantin@codesynthesis.com>
+// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <libpq-fe.h>
+
+#include <odb/pgsql/auto-handle.hxx>
+
+namespace odb
+{
+  namespace pgsql
+  {
+    void handle_traits<PGconn>::
+    release (PGconn* h)
+    {
+      PQfinish (h);
+    }
+
+    void handle_traits<PGresult>::
+    release (PGresult* h)
+    {
+      PQclear (h);
+    }
+  }
+}