From 54f53857279644914e0c2a2aed24060f31ed2575 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Tue, 15 May 2018 00:09:17 +0200
Subject: Implement exception safe sqlite transaction class (rollback)

---
 src/sql/Sql.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'src/sql/Sql.cpp')

diff --git a/src/sql/Sql.cpp b/src/sql/Sql.cpp
index 754a30d..4e65ddb 100644
--- a/src/sql/Sql.cpp
+++ b/src/sql/Sql.cpp
@@ -1,5 +1,7 @@
 #include "../../include/odhtdb/sql/Sql.hpp"
 #include <sqlite3.h>
+#include <exception>
+#include <cassert>
 
 namespace odhtdb
 {
@@ -18,4 +20,22 @@ namespace odhtdb
         }
         return SQLITE_OK;
     }
+    
+    SqlTransaction::SqlTransaction(sqlite3 *_db) : 
+        db(_db)
+    {
+        assert(db);
+        sqlite3_exec(db, "BEGIN", 0, 0, 0);
+    }
+    
+    SqlTransaction::~SqlTransaction()
+    {
+        if(std::uncaught_exception())
+            sqlite3_exec(db, "ROLLBACK", 0, 0, 0);
+    }
+    
+    void SqlTransaction::commit()
+    {
+        sqlite3_exec(db, "COMMIT", 0, 0, 0);
+    }
 }
-- 
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