From 994186f2672547761392c71ed15ded2a83e8c20d Mon Sep 17 00:00:00 2001
From: Machiavelli <none@none>
Date: Sat, 21 Aug 2010 03:19:25 +0200
Subject: DB Layer: - Make SQL Transactions actual objects used in code.
 (Thanks to Derex for the idea) * Uncommitted transactions will be
 automatically rolled back and cleaned up using ACE_Refcounted_Auto_Ptr, so no
 need to call Rollback() in the code. * Prevents recursive transactions and
 makes developers aware of transactions going on. * Gets rid of unneccesary
 overhead iterating over a concurrent map. - Some cleanups in affected code,
 including better usage of transaction control in AH / mail related code to
 prevent data loss.

*** Experimental, use at own risk, recommended to backup your DBs. ***

--HG--
branch : trunk
---
 src/server/shared/Database/Transaction.h | 59 ++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 src/server/shared/Database/Transaction.h

(limited to 'src/server/shared/Database/Transaction.h')

diff --git a/src/server/shared/Database/Transaction.h b/src/server/shared/Database/Transaction.h
new file mode 100644
index 00000000000..e94ca053e32
--- /dev/null
+++ b/src/server/shared/Database/Transaction.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _TRANSACTION_H
+#define _TRANSACTION_H
+
+/*! Transactions, high level class. */
+class Transaction
+{
+    friend class TransactionTask;
+    public:
+        ~Transaction() { Cleanup(); }
+
+        void Append(const char* sql);
+        void PAppend(const char* sql, ...);
+    
+        size_t GetSize() { return m_queries.size(); }
+
+    protected:
+        void Cleanup();
+        std::queue<char*> m_queries;
+
+    private:
+        bool m_actioned;
+};
+typedef ACE_Refcounted_Auto_Ptr<Transaction, ACE_Null_Mutex> SQLTransaction;
+
+/*! Low level class*/
+class TransactionTask : public SQLOperation
+{
+    friend class DatabaseWorkerPool;
+    friend class DatabaseWorker;
+
+    public:
+        TransactionTask(SQLTransaction trans) : m_trans(trans) {} ;
+        ~TransactionTask(){};
+
+    protected:
+        bool Execute();
+
+        SQLTransaction m_trans;
+};
+
+#endif
\ No newline at end of file
-- 
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