From: Philipp Spitzer <philipp@spitzer.priv.at>
Date: Wed, 27 Sep 2017 19:36:47 +0000 (+0200)
Subject: Implement transaction RAII.
X-Git-Tag: 0.6.3~6
X-Git-Url: https://git.toastfreeware.priv.at/toast/confclerk.git/commitdiff_plain/c19618d6f4233dc33c6702684e39efad58a85443?hp=0c71a07c7148800193671593cff6b35b64b12a0a

Implement transaction RAII.
---

diff --git a/src/sql/sqlengine.h b/src/sql/sqlengine.h
index 5cfc6bf..68d0679 100644
--- a/src/sql/sqlengine.h
+++ b/src/sql/sqlengine.h
@@ -82,5 +82,24 @@ class SqlEngine : public QObject {
         void dbError(const QString& message);
 };
 
+
+class TransactionRaii {
+    SqlEngine& sqlEngine;
+    bool committed = false;
+public:
+    TransactionRaii(SqlEngine& sqlEngine): sqlEngine(sqlEngine) {
+        sqlEngine.beginTransaction();
+    }
+
+    void commit() {
+        sqlEngine.commitTransaction();
+        committed = true;
+    }
+
+    ~TransactionRaii() {
+        if (!committed) sqlEngine.rollbackTransaction();
+    }
+};
+
 #endif /* SQLENGINE_H */