* HIGHLY EXPERIMENTAL - USE AT OWN RISK *

Database Layer:
- Implement connection pooling: Instead of 1 delay thread per database, you can configure between 1 and 32 worker threads that have a seperate thread in the core and have a seperate connection to the MySQL server (based on raczman/Albator´s database layer for Trinitycore3)
- Implement a configurable thread bundle for synchroneous requests from seperate core threads (see worldserver.conf.dist for more info)
- Every mapupdate thread now has its seperate MySQL connection to the world and characters database
- Drop inconsistent PExecuteLog function - query logging will be implemented CONSISTENTLY later
- Drop current prepared statement interface - this will be done *properly* later
- You´ll need to update your worldserver.conf and authserver.conf
- You´re recommended to make a backup of your databases before using this.
* HIGHLY EXPERIMENTAL - USE AT OWN RISK *
* HIGHLY EXPERIMENTAL - USE AT OWN RISK *
etc.

--HG--
branch : trunk

1 files changed, 122 insertions, 0 deletions

diff --git a/src/server/shared/Database/SQLOperation.h b/src/server/shared/Database/SQLOperation.h
new file mode 100644
index 00000000000..8f2a59151a3
--- /dev/null
+++ b/src/server/shared/Database/SQLOperation.h
@@ -0,0 +1,122 @@
+/*
+ * 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 _SQLOPERATION_H
+#define _SQLOPERATION_H
+
+#include <ace/Method_Request.h>
+
+#include "Common.h"
+#include "Threading/Callback.h"
+
+class MySQLConnection;
+
+class SQLOperation : public ACE_Method_Request
+{
+    public:
+        SQLOperation(){};
+        int call()
+        {
+            Execute();
+            return 0;
+        }
+        virtual bool Execute() = 0;
+
+        virtual void SetConnection(MySQLConnection* con) { m_conn = con; }
+
+        MySQLConnection* m_conn;
+};
+
+/*! Raw, ad-hoc query. */
+class BasicStatementTask :  public SQLOperation
+{
+    public:
+        BasicStatementTask(const char* sql);
+        ~BasicStatementTask();
+
+        bool Execute();
+
+    private:
+        const char* m_sql;      //- Raw query to be executed
+};
+
+/*! Transactions */
+class TransactionTask : public SQLOperation
+{
+    public:
+        TransactionTask();
+        ~TransactionTask();
+        void ForcefulDelete();
+
+        bool Execute();
+
+    private:
+        std::queue<char*> m_queries;
+};
+
+/*! ResultQueue */
+class SQLResultQueue : public ACE_Based::LockedQueue<Trinity::IQueryCallback* , ACE_Thread_Mutex>
+{
+    public:
+        SQLResultQueue() {}
+        void Update();
+};
+
+class SQLQueryHolder
+{
+    friend class SQLQueryHolderTask;
+    private:
+        typedef std::pair<const char*, QueryResult_AutoPtr> SQLResultPair;
+        std::vector<SQLResultPair> m_queries;
+    public:
+        SQLQueryHolder() {}
+        ~SQLQueryHolder();
+        bool SetQuery(size_t index, const char *sql);
+        bool SetPQuery(size_t index, const char *format, ...) ATTR_PRINTF(3,4);
+        void SetSize(size_t size);
+        QueryResult_AutoPtr GetResult(size_t index);
+        void SetResult(size_t index, QueryResult_AutoPtr result);
+};
+
+class SQLQueryHolderTask : public SQLOperation
+{
+    private:
+        SQLQueryHolder * m_holder;
+        Trinity::IQueryCallback * m_callback;
+        SQLResultQueue * m_queue;
+    public:
+        SQLQueryHolderTask(SQLQueryHolder *holder, Trinity::IQueryCallback * callback, SQLResultQueue * queue)
+            : m_holder(holder), m_callback(callback), m_queue(queue) {}
+        bool Execute();
+};
+
+class SQLQueryTask : public SQLOperation
+{
+    private:
+        const char *m_sql;
+        Trinity::IQueryCallback * m_callback;
+        SQLResultQueue * m_queue;
+    public:
+        SQLQueryTask(const char *sql, Trinity::IQueryCallback * callback, SQLResultQueue * queue)
+            : m_sql(strdup(sql)), m_callback(callback), m_queue(queue) {}
+        ~SQLQueryTask() { void* tofree = const_cast<char*>(m_sql); free(tofree); }
+        bool Execute();
+};
+
+
+#endif
\ No newline at end of file