--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/SQLite/Transaction.cpp	Thu Jul 19 14:32:22 2012 +0200
@@ -0,0 +1,84 @@
+/**
+ * Palantir - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "Transaction.h"
+
+namespace Palantir
+{
+  namespace SQLite
+  {
+    Transaction::Transaction(Connection& connection) :
+      connection_(connection),
+      isOpen_(false)
+    {
+    }
+
+    Transaction::~Transaction()
+    {
+      if (isOpen_)
+      {
+        connection_.RollbackTransaction();
+      }
+    }
+
+    void Transaction::Begin()
+    {
+      if (isOpen_) 
+      {
+        throw PalantirException("SQLite: Beginning a transaction twice!");
+      }
+
+      isOpen_ = connection_.BeginTransaction();
+      if (!isOpen_)
+      {
+        throw PalantirException("SQLite: Unable to create a transaction");
+      }
+    }
+
+    void Transaction::Rollback() 
+    {
+      if (!isOpen_) 
+      {
+        throw PalantirException("SQLite: Attempting to roll back a nonexistent transaction. "
+                                "Did you remember to call Begin()?");
+      }
+
+      isOpen_ = false;
+
+      connection_.RollbackTransaction();
+    }
+
+    void Transaction::Commit() 
+    {
+      if (!isOpen_) 
+      {
+        throw PalantirException("SQLite: Attempting to roll back a nonexistent transaction. "
+                                "Did you remember to call Begin()?");
+      }
+
+      isOpen_ = false;
+
+      if (!connection_.CommitTransaction())
+      {
+        throw PalantirException("SQLite: Failure when committing the transaction");
+      }
+    }
+  }
+}